Ester Blend Research Articles

Experimental Analysis of Partially Premixed Charge in a Diesel Engine with Jatropha Oil Methyl Ester and Diesel Blends

Homogeneous charge compression ignition (HCCI) is an alterna -tive combustion process which received considerable interest to meetthe stringent emission norms. One such technology developed is par -tially premixed charge compression ignition (PCCI) combustion modea variant of HCCI combustion mode. In this work an attempt has beenmade to experimentally analyze the performance and emission char-acteristics with Premixed Charge Compression Ignition (PCCI) modeassisted with pilot injection. Experiments were conducted in a modifiedsingle cylinder water-cooled diesel engine employing a conceptual sys -tem known as transient state fuel induction with different modes suchas diesel and biodiesel conventional mode, diesel PCCI–diesel, biodieselPCCI-diesel and biodiesel PCCI-biodiesel modes. In the present work,diesel and jatropha methyl ester was used premixed fuel along with con-ventional injection of either diesel or 20% jatropha oil methyl ester blendwith diesel. The results indicate that brake thermal efficiency decreasesmarginally as the methyl ester in the conventional and PCCI modes andHC, CO emissions are higher and soot levels are lower in the case ofbiodiesel PCCI-biodiesel mode.

Synergistic Effect of Fullerenes on the Laser-Induced Periodic Surface Structuring of Poly(3-Hexyl Thiophene).

Ordered and homogeneous laser-induced periodic surface structures (LIPSS) could be fabricated in poly(3-hexyl thiophene):[6,6]-phenyl C71-butyric acid methyl ester (P3HT:PC71BM) blends by using wavelengths in the ultraviolet (UV) range (266 nm). The absorption coefficient of PC71BM, which is maximum in its UV–Visible absorption spectrum around 266 nm, enhanced the overall absorption of the blend. In addition, PC71BM itself was capable of developing homogeneous LIPSS by laser irradiation at λlaser = 266 nm. Therefore, we proposed that the synergistic effect of PC71BM on the LIPSS formation in P3HT:PC71BM (1:1) was due to a templating effect for the LIPSS formation of the PC71BM itself, which added to the overall increment of the absorption of the blend. LIPSS formation at ambient conditions in this wavelength range led to chemical modification of both P3HT and PC71BM, which rendered to non-conducting samples. Irradiation in vacuum significantly reduced radiation damage, rendering to the characteristic electrical conductivity pattern observed in P3HT LIPSS samples irradiated in the visible range. This effect could be of potential interest in order to obtain LIPSS in low absorbing polymers.

Synthesis and Application of Functionalized Diblock Amphiphilic Fullerene Derivatives

AbstractA series of functionalized amphiphilic diblock fullerene derivatives C60‐4TPB, C60‐2DPE, C60‐4HTPB, C60‐PHFBS, and C60‐2BEFPE are developed and applied as the modification layers on zinc oxide (ZnO) in inverted organic solar cell (OSC) devices. By spin‐coating ZnO, the fullerene derivatives layer can reduce the work function of ZnO via modulation of the interfacial dipoles. When introducing solvent treatment by toluene during the preparation of films, the order of the fullerene derivatives layer are clearly increased, which are supported by X‐ray diffraction and contact angle of water measurements. The OSCs devices modified with those fullerene derivatives show power conversion efficiency of 8.62%, 9.21%, 8.86%, 9.14%, and 9.15% based on poly‐[4,8‐bis(5‐(2‐ethylhexyl)‐thiophen‐2‐yl)benzo[1,2‐b:4,5‐b′]‐dithiophene‐alt‐3‐fluoro thieno‐[3,4‐b] thiophene‐2‐carboxylate] (PTB7‐Th) and [6,6]‐phenyl‐C71‐butyric acid methyl ester (PC71BM) blend, respectively. All the results indicate that the development of diblock amphiphilic fullerene derivatives opens a new opportunity to modify the present defects of ZnO by simultaneously modulating interfacial work functions, the wetting properties of the interlayer, and the active layer.

Mesoscopic investigation of the effect of MWCNT/rGO network on the performance of P3HT:PC60BM solar cells

Abstract Bulk heterojunction (BHJ) photovoltaic cells (PVCs) have been fabricated with a new active layer architecture by introducing 1-dimensional (1D) multi-walled carbon nanotubes (MWCNTs) and 2-dimensional (2D) reduced graphene oxide (rGO) in Poly[3-hexylthiophene-2,5-diyl] (P3HT): Phenyl-C61-butyric acid methyl ester (PC60BM) blends. The fabricated solar cells revealed a maximum short-circuit current density (Jsc) of ∼11.01 mA/cm2, open-circuit voltage (Voc) of ∼0.63 V and fill factor (FF) of ∼0.5 yielding an efficiency of ∼4.13%. The improved efficiency has been attributed to the efficient exciton dissociation at the junctions formed by CNTs and rGOs in addition to PC60BM with P3HT. The faster electron-transport by PC60BM and hole by CNT/rGO network in the blend that inhibits the carrier recombination contribute significantly towards the improved performance of the fabricated PVCs. The effect of MWCNTs:rGOs network on the mesoscopic phase distribution of P3HT and PC60BM have also been investigated.

Studies on thermo mechanical and surface properties of polysulfone/poly(ether imide ester) blends

Polyimides are high performance polymeric materials with excellent physical, thermal and mechanical properties, but its application is limited due to low processability and poor solubility. In order to improve processability and solubility without sacrificing thermal stability, flexible linkages such as ether and ester units were incorporated into the polyimide backbone. Poly (ether imide ester)s were prepared by high temperature solution polycondensation reaction. The blends of polysulfone (PSf) and poly (ether imide ester) were prepared by solution casting method. The effect of blend ratio on morphological, hydrophilic, mechanical and thermal properties of the resultant blends were evaluated. Thermal properties of the blends were analyzed using thermo gravimetric analysis and differential scanning calorimetry. The contact angle measurements was carried out to study the influence of poly (ether imide ester) in corporation on the wettability of the of PSf matrix. Various surface parameters such as total surface free energy, interfacial free energy, work of adhesion, spreading coefficient and Girifalco-Good’s interaction parameter were calculated from the measured contact angle values.

Experimental Analysis of Partially Premixed Charge in a Diesel Engine with Jatropha Oil Methyl Ester and Diesel Blends

Homogeneous charge compression ignition (HCCI) is an alternative combustion process which received considerable interest to meet the stringent emission norms. One such technology developed is parti...

Study of Combustion Characteristics on Single Cylinder Direct Injection Diesel Engine with Plasma and HVOF Coated Ceramic Powders on Piston Crown

Abstract Wear resistive and thermal barrier ceramic coating plays a vital role in the combustion and performance of diesel engines. The biodiesel extract from jatropha with methyl ester blends, were tested for their alternate resource in diesel engines. This paper is a study on the combustion characteristics, of a single cylinder direct injection diesel engine with the partially stabilized ZrO2 and Cr3C2 coatings over the piston crown for thermal performance and wear resistance. Biodiesel extract from jatrophais is used as blends to study on the combustion and performance characteristics of the diesel Engine. Experimental investigation on combustion characteristics, such as, heat release, peak pressure, ignition delay and brake thermal efficiency, is studied for varying loads 0%, 25%, 50%, 75%, 100% for both coated and uncoated piston. The biodiesel blends prepared from jatropha is prepared through esterification process (10-20 % by volume). From the combustion study, the results reveal that, combustion parameters (peak pressure and heat release) is improved by 10 % on a compression ratio, of 17.5 for the coated piston with jatropha biodiesel blends. In the comparison of varying volume % of jatropha and diesel the cylinder, pressure inceases at 20% JME blend for the coated piston in comparison to the uncoated piston, for the optimal compression ratio 17.5. The wear resistance characteristics proves, that the coated piston has a difference in wear depth 47 % of and total wear volume of 35% than the uncoated improving the tribological characterization of the piston.

Analysis of CI Engine Parameters with Used Temple Oil Biodiesel Using Taguchi Method

Today’s world is facing major environmental issue called global warming, the emissions of diesel fuel is one of the major source for the global warming and also for air pollution. The use of biodiesel can reduce diesel fuel consumption and emission of diesel engine, because biodiesel has been considered as a potential alternative fuel for CI (Compression Ignition) engines. Out of many biodiesel derived from various resources, present study deals with usage of Used Temple Oil have been considered as fuel for analysis. The transesterfication process was adopted to condition the raw oil to suit its properties. Properties are evaluated according ASTM standard and properties are found to be computable with diesel. The present work Used Temple Oil biodiesel bends are used to the run thesingle cylinder four strokes diesel engine at different injection opening pressure. To optimize thethree opening pressure, Taguchi method adopted. For forming orthogonal array the experiments have been designed using DOE in Minitab 18 and Taguchi’s L9 array is employed. For identifying the contribution of various factors which significantly affects the response followed by regression analysis to validate the results at optimum set of selected control factors. This study deals with optimal values of BTE and NOx emission. From the results it reveals that NOx reduction is maximum at 200 bar injection pressure, B30 methyl ester blend at 50% load.

Performance and Exhaust Emission Optimization of a Dual Fuel Engine by Response Surface Methodology

A central composite face-centered design (CCFD) was employed to examine the optimal conditions for the compression ratio of the Sardine Fish Oil Methyl Ester (SFOME) blend to the Thermal cracked Cashew Shell Nut Liquid T-CSNL blend by simultaneously considering the brake thermal efficiency (BTE), the brake specific fuel consumption (BSFC), carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxide (NOx) emissions as response variables. The experimental results obtained were analyzed with the help of Design Expert software, and output response predictions were fitted with a polynomial quadratic model of the second degree. The maximum overall desirability obtained for the entire model was 0.7506 with a compression ratio of 19.31 and blend ratios of 20% for SFOME and 15.72% for T-CSNL by volume proportion. Under optimum conditions, it was found that the predicted and experimental results were very similar, and it can be concluded that the quadratic model of second-order can precisely predict the performance and emission characteristics of engines.

Effect of Injection Timing on the Utilization of B20 Blends of Dairy Scum Oil Methyl Esters (Dsome) Fulled Diesel Engine

Diesel engines are the prime movers that are highly efficient compared to their counter part of petrol engines. However, higher NOx, particulate matter CO, HC are the draw backs associated with their operation. Renewable fuels like biodiesel and their blends are suitable and substitute for different applications as they are renewable in nature and provide satisfaction for fossil fuels of diesel which are exhaustible in nature and add burden to the Indian economy. In this direction the experiments were planned on the modified diesel engines to study the effects of Dairy scum oil methyl esters B20 blend (DSOME B20). By Advancing the time of injection from 19° to 27° BTDC, keeping injection opening pressure IOP constant results are obtained and analysed. It is noticed that higher BTE, lower emissions of smoke, HC, CO emissions while NOx increased.

Effect of Egyptian Roselle biodiesel on performance and emissions of diesel engine

The increase in fuel demand consumption led to search about alternative fuels. Screw press was used to extract oil from roselle seeds at a temperature of 45 °C and motor speed of 30 rpm. Biodiesel was produced from roselle oil. Biodiesel blends were prepared from diesel and roselle biodiesel in volume percentages of 10 and 20 %. The experiments were run at engine load variations from start to full load. Thermal efficiency for roselle methyl ester blends was higher than diesel oil. Biodiesel blends achieved lower specific fuel consumptions of roselle methyl ester blends about diesel fuel. CO and HC emissions for biodiesel blends were decreased of diesel fuel. Biodiesel blends showed higher NOx emissions for biodiesel blends about diesel fuel. Roselle rmethyl ester blends up to 20% percentage are used as alternative fuels because performance and emissions were improved compared to diesel fuel.

Experimental study on emissions of algal biodiesel and its blends on a diesel engine

Abstract An laboratory-scale experimental study has been performed to evaluate the physicochemical characterization and exhaust gas emissions of algal oil methyl ester blends (biodiesel + diesel) and pure diesel fuel on a single cylinder, VCR diesel engine at varying load (0, 3, 6, 9 and 12 Kg) and CRs (13, 14, 15, 16 and 17) conditions. The algal oil obtained was transesterified using previously reported efficient catalyst potassium impregnated zinc oxide 60 K/ZnO-900 and methanol to synthesize methyl esters (AOMEs). Different AOMEs blends such as AB5, AB10, AB15, AB20, AB25, AB30, and AB50 were prepared with diesel fuel on the volume basis. All blended fuels were tested for important physicochemical properties such as density, calorific value, flash point and fire point as per ASTM standards and these blended fuels showed the comparable results within the test limit. Furthermore, exhaust emission analysis of HC, NOx, CO, CO2 and O2 gases of the prepared blends were performed and results were compared with baseline diesel fuel. Results showed that the AB30 blend exhibited the minimum exhaust emissions of pollutant gases. It reduces the emission of HC and CO gases up to 35.13 and 30%, respectively with an increase in NOx up to 25–30% due to presence of unsaturation moiety. The increased emissions of CO2 and O2 gases up to 9–20% and 8–20% were also observed due to oxygen content present in the blended fuel. In general trend, improved exhaust emissions were observed for AB30 at optimum parameter of 9 Kg load and CR 16 conditions that closely followed the standard diesel.

A new 2D-naphtho[1,2-b:5,6-b’]dithiophene based donor small molecules for bulk-heterojunction organic solar cells

We present design and synthesis of three new symmetrical and linear A-D-A type π-conjugated donor small molecules (2D-NDT(TPD)2, 2D-NDT(Ester)2 and 2D-NDT(Amide)2) containing two dimensional (2D) naphthodithiophene (NDT) unit as the central donor core, end-capped with electron deficient unit such as thieno[3,4c]pyrrole-4,6-dione (TPD), 2-ethylhexyl 2-cyanoacetate (Ester) and 2-cyano-N-(2-ethylhexyl)acetamide (Amide) group respectively. We characterized these small molecules and further investigated the optical, electrochemical, morphological and photovoltaic properties. When solution–processed bulk heterojunction organic solar cells are fabricated using these small molecules, the morphology of 2D-NDT(Ester)2 or 2D-NDT(Amide)2 and [6,6]-PhenylC71-butyric acid methyl ester (PC71BM) blend film was optimized using 1,8 Diiodooctane (DIO) additive. DIO additive promotes the formation of nanoscopically well-connected molecular domains in the active blend film. A device based on (1% DIO, 1:1) 2D-NDT(Ester)2:PC71BM exhibited highest the efficiency of 1.22% with a short-circuit density (Jsc) of 3.75 mA/cm2, an open circuit voltage (Voc) of 0.91 V and fill factor (FF) of 35.50. Similarly for (1% DIO, 1:3) 2D-NDT(Amide)2:PC71BM device efficiency of 0.55%, with Jsc of 2.36 mA/cm2, Voc of 0.64 V and FF of 36.95 was observed. Whereas for (1:2) 2D-NDT(TPD)2:PC71BM device, due to the improper blending and phase separation between donor and acceptor efficiency restricted to 0.33% with Jsc of 1.66 mA/cm2, Voc of 0.73 V and FF of 27.2.

Optimizing nanoscale morphology and improving carrier transport of PCDTBT-PCBM bulk heterojunction by cyclic carboxylate nucleating agents

Abstract In this work, four cyclic carboxylate commercial nucleating agents, bicyclo [2.2.1] heptane-2,3-dicarboxylic acid disodium salt (HPN-68L), sodium salt of hexahydrophthalic acid (HHPA-Na), sodium benzoate (Be-Na) and calcium salt of hexahydrophthalic acid (HPN-20E) were respectively added into poly[N-9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′ benzothiadi-azole)] (PCDTBT)-[6,6]-phenyl C61-butyric acid methyl ester (PCBM) blend. Atomic force microscopy (AFM) and UV–vis measurements indicate that the addition of carboxylic acid sodium salts can effectively optimize the morphology of active layer, decrease the phase domain size and increase the optical absorption intensity of PCDTBT-PCBM blends. The PCDTBT-PCBM-additive ternary devices were fabricated and found that adding carboxylic acid sodium salts can improve the hole mobility, balance the hole and electron mobility and finally increase the power conversion efficiency (PCE). Fixed the additive content as 5%, the modulation ability of the bicyclic dicarboxylic acid sodium salt HPN-68L is best, monocyclic dicarboxylic acid sodium salt HHPA-Na comes second, monocyclic carboxylic acid sodium salt Be-Na is worst. The addition of carboxylic acid calcium salt HPN-20E has no effects on the morphology and optical absorption intensity of the PCDTBT-PCBM blend, and the photoelectric properties of PCDTBT-PCBM-HPN-20E ternary device decreases in comparison with those of pristine PCDTBT-PCBM binary device. The modulation ability of cyclic carboxylate is related to its surface free energy and its location in the PCDTBT-PCBM blend. HPN-68L locates in the interfacial region between PCDTBT and PCBM, other cyclic carboxylates locates in the PCBM. Our finding suggests the addition of cyclic carboxylic acid sodium salts can be a facile approach to optimize the morphology and increase the electrical properties of organic materials for future development of organic photovoltaic devices.

An experimental investigation on the performance and emission characteristics of karanja oil methyl ester blend B20 and hydrogen induction with dual-fuel mode direct injection diesel engine with variable compression ratio and injection operating pressure

ABSTRACT The present work experimentally demonstrates the differences in performance characteristics and end emission trends between diesel, KOME Blend B20, and KOME Blend B20 with various flow rates of hydrogen-initiated dual-fuel-operated VCR diesel engine. A series of tests were carried out at variable injection pressures (200, 220, and 240 bar) and different compression ratios (15, 16, 17, and 18) of the performance and emission characteristics. Increasing BTE and decreasing SFC with mounting CR from 15 to 18 with injection pressure from 200 to 220 bar and at 240 bar get reversed. Blending CO, CO2, and UHC opacity at 220 bar IOP with 18 CR for B20 + 15 lpm is found to release radically lower concentration and also NO x emissions decreased to some extent for all test blends of B20 and B20 with a hydrogen flow rate when compared to the pure diesel.

Production of lipid-containing algal-bacterial polyculture in wastewater and biomethanation of lipid extracted residues: Enhancing methane yield through hydrothermal pretreatment and relieving solvent toxicity through co-digestion

The feasibility of generating a lipid-containing algal-bacterial polyculture biomass in municipal primary wastewater and enhancing biomethanation of lipid-extracted algal residues (LEA) through hydrothermal pretreatment and co-digestion with sewage sludge (SS) was investigated. In high-rate algal ponds, the polyculture of native algal and bacteria species demonstrated a monthly average net and gross biomass productivity of 30 ± 3 and 36 ± 3 gAFDW m−2 day−1 (summer season). The algal community was dominated by Micractinium sp. followed by Scenedesmus sp., Chlorella sp., pennate diatoms and Chlamydomonas sp. The polyculture metabolic activities resulted in average reductions of wastewater volatile suspended solids (VSS), carbonaceous soluble biochemical oxygen demand (csBOD5) and total nitrogen (Ntotal) of 63 ± 18%, 98 ± 1% and 76 ± 21%, respectively. Harvested biomass contained nearly 23% lipid content and an extracted blend of fatty acid methyl esters satisfied the ASTM D6751 standard for biodiesel. Anaerobic digestion of lipid extracted algal residues (LEA) demonstrated long lag-phase in methane production of 17 days and ultimate methane yield of 296 ± 2 mL/gVS (or ~50% of theoretical), likely because to its limited biodegradability and toxicity due to presence of the residual solvent (hexane). Hydrothermal pretreatment increased the ultimate methane yield and production rate by 15–30% but did not mitigate solvent toxicity effects completely leading to less substantial improvement in energy output of 5–20% and diminished Net Energy Ratio (NER < 1). In contrast, co-digestion of LEA with sewage sludge (10% to 90% ratio) was found to minimize solvent toxicity and improve methane yield enhancing the energy output ~4-fold, compared to using LEA as a single substrate, and advancing NER to 4.2.

Investigation on diethyl ether as an additive with Calophyllum Inophyllum biodiesel for CI engine application

The aim of the present work deals with the investigation of compression ignition characteristics for different concentrations of diethyl ether in diesel - Calophyllum Inophyllum Methyl Ester blends. Initially, various experiments were conducted for diesel, neat biodiesel, 50% blends of diesel and biodiesel at various engine loads with constant speed conditions. All the ternary blends were prepared by adding 5%,7.5%, 10% and 12.5% of diethyl ether with diesel-biodiesel blends. The addition of diethyl ether was limited by 12.5% by volume because the engine was not running at higher engine loads. The experimental study revealed that the brake thermal efficiency was reduced by 5.3% with increase in brake specific fuel consumption for 12.5% addition of diethyl ether in the blend when compared to diesel fuel. Further, the diesel engine operation with diesel-biodiesel-diethyl ether ternary blends has shown 84%, 4.6% and 57% reduction in unburned hydrocarbon, carbon monoxide and oxides of nitrogen emissions than that of diesel fuel at 100% engine load. The carbon dioxide emission formation was similar to diesel fuel at lower concentration of diethyl ether and 5.2% reduction was noted for higher fraction in the blend. Meanwhile, the smoke opacity has increased to 80.1% for 12.5% of diethyl ether addition in the blend. However, the combustion characteristics are slightly dropdown when the diesel engine was operated with all the ternary blends of diethyl ether.

Experimental correlation of laminar flame pollutant emission indices with methyl ester fuel degree of unsaturation and equivalence ratio

Fuel unsaturation has been widely cited as a reason for the increased nitric oxide emissions from compression ignition engines when fueled with methyl esters (biodiesels) and their blends with petroleum counterparts. In an earlier study, a parameter called degree of unsaturation (DOU) was established to serve as a common platform across different fuel families (esters/alkanes/aromatics) to quantify the effects of fuel unsaturation, particularly with petroleum/biodiesel blends. DOU can be evaluated based on the average molecular formula of the fuel alone without involving complex and expensive experimental procedures such as those involved in the measurement of iodine number and bromine number. In this article, the fuel unsaturation effects on the emission characteristics from the laminar flames of blends of various pre-vaporized methyl esters, such as methyl oleate, neat biodiesels (from methyl esters of soy, canola, palm and rapeseed feedstock) and biodiesel blends were investigated at four burner-exit equivalence ratios of 0.9, 1.0, 1.2 and 1.5. The selection of these fuels for this study was an attempt to isolate the fuel unsaturation effect of biodiesels, and their blending effect with petroleum fuels. Experimental correlations were developed between DOU (over a range of 1.7–2.5) and global NO and CO emission indices as a function of equivalence ratio. The effects of DOU on EINO were significantly influenced by the equivalence ratio, with the maximum influence at an equivalence ratio of 1.2.

An experimental investigations on combined effect of EGR and SCR for diesel engine fuelled with the addition of TiO2 nanoparticle to M.Elangi methyl ester blend

ABSTRACT The performance and emission magnitude have been investigated on the single cylinder CI engine fuelled with M.Elangi methyl ester (MEME) blends with TiO2 nano additives with exhaust gas recirculation (EGR) and Selective Catalytic Reduction (SCR) system. To improve the performance and minimize the emission magnitude, the TiO2 nanoparticles were dispersed into a MEME 20 fuel with a dosage of 25 ppm to prepare the MEME20+25 TiO2 fuel sample. Further, minimization of NOx and other emissions the EGR and SCR technique are provided to test the engine with MEME20, MEME20+25TiO2, MEME20+25TiO2@ 20%EGR with different of urea solution at constant flow rates, which is varied from30 to 35 % by weight. The brake thermal efficiency of MEME20+25TiO2, MEME20+25TiO2@ 20%EGR fuels increased by 3.6%, 2.8%, compared to the MEME20 fuel at full load condition. The emissions of HC and CO were reduced with the addition of TiO2 nanoparticles to the MEME20 fuel and both the emissions were increased with EGR method compared to that of MEME20 fuel. The smoke emissions were increased by 12.23% for MEME20+25TiO2@ 20%EGR and decreased by 57.33% for the MEME20+25TiO2@ 20%EGR with 35% urea injected compared to that of MEME20 fuel at maximum load condition. The NOx emissions were reduced by 17.11% and 60% for MEME20+25TiO2 and MEME20+25TiO2@ 20%EGR with 35% urea injected and connected with Titanium dioxide (TiO2) coated catalyst compared to the MEME20. It is concluded that MEME20+25TiO2@ 20%EGR with35% urea injected with Titanium dioxide (TiO2) coated catalyst (SCR) technique exhibits better engine performance and greater reduction of exhaust emissions.

Highly efficient and stable organic solar cell modules processed by blade coating with 5.6% module efficiency and active area of 216 cm2

AbstractIn this study, an efficient and stable large‐area blade‐coated organic solar cell (OSC) module with an active area of 216 cm2 (16 elementary cells connected in series) is demonstrated by combining appropriate thermal annealing treatment with the use of 4,4′‐(((methyl(4‐sulphonatobutyl)ammonio)bis(propane‐3,1‐diyl))bis(dimethyl‐ammoniumdiyl))bis‐(butane‐1‐sulfonate) (MSAPBS) as the cathode interfacial layer. For the opaque device using poly[4,8‐bis(5‐(2‐ethylhexyl)thiophen‐2‐yl)benzo[1,2‐b;4,5‐b′]dithiophene‐2,6‐diyl‐alt‐(4‐(2‐ethylhexyl)‐3‐fluorothieno[3,4‐b]thiophene‐)‐2‐carboxylate‐2‐6‐diyl)] (PBDTTT‐EFT (PTB7‐Th)):[6,6]‐phenyl C71‐butyric acid methyl ester (PC71BM) blend film as the active layer, the power conversion efficiency (PCE) of 5.6% is achieved under AM 1.5G solar light illumination. Very encouragingly, our strategy can be applicable for semitransparent OSCs, and a remarkable PCE up to 4.5% is observed. To the best of our knowledge, the PCE of 5.6% for opaque device and 4.5% for semitransparent device represent the highest PCE ever reported for OSCs with the active area exceeding 100 cm2. The devices also show an impressive stability under outdoor environment, where the efficiency decay is less than 30% for 60 days. Our findings can pave the way toward the development of organic solar cell modules with high performance and long‐term stability.