Dye-sensitized Solar Cells Research Articles

Investigation of the Influence of Donor and Internal Acceptor on Photovoltaic Parameters in D-A1-π-A Dye Sensitizers for efficient DSSCs.

Investigation of the Influence of Donor and Internal Acceptor on Photovoltaic Parameters in D-A1-π-A Dye Sensitizers for efficient DSSCs.

Charge transfer and photophysical properties of DSSCs based on different π-conjugated bridges: DFT and TD-DFT study.

Charge transfer and photophysical properties of DSSCs based on different π-conjugated bridges: DFT and TD-DFT study.

2D-Ti3C2 MXenes decorated with WO3 as counter electrode catalysts for iodide redox shuttle in dye-sensitized solar cells

2D-Ti3C2 MXenes decorated with WO3 as counter electrode catalysts for iodide redox shuttle in dye-sensitized solar cells

High-efficiency fiber-shaped dye-sensitized solar cells with cost-effective ZnCo2O4/Carbon fiber counter electrodes for low-light environments

High-efficiency fiber-shaped dye-sensitized solar cells with cost-effective ZnCo2O4/Carbon fiber counter electrodes for low-light environments

The impact of aryl amine donors on the performance of dye-sensitized solar cells based on quinoxaline D-π-A-π-A sensitizers

The impact of aryl amine donors on the performance of dye-sensitized solar cells based on quinoxaline D-π-A-π-A sensitizers

The 9H-carbazole based derivative dyes for dye-sensitized solar cells technology

The 9H-carbazole based derivative dyes for dye-sensitized solar cells technology

Performance study of dye-sensitized solar cells: a novel ‘slit method’ for electrolyte filling and tailoring 1D/3D TiO2 nanorod networks

Performance study of dye-sensitized solar cells: a novel ‘slit method’ for electrolyte filling and tailoring 1D/3D TiO2 nanorod networks

Phenothiazine sensitizers bearing benzothiadiazole unit for dye-sensitized solar cells

Phenothiazine sensitizers bearing benzothiadiazole unit for dye-sensitized solar cells

Top-down engineering to construct hierarchical nanocube NiS2/Ni9S8 for efficient Pt-free dye-sensitized solar cells and hydrogen evolution reaction

Top-down engineering to construct hierarchical nanocube NiS2/Ni9S8 for efficient Pt-free dye-sensitized solar cells and hydrogen evolution reaction

Challenges and prospects of semi transparent dye-sensitized solar cells for real-world applications: A review

Challenges and prospects of semi transparent dye-sensitized solar cells for real-world applications: A review

Carbazole- Versus Phenothiazine-Based Electron Donors for Organic Dye-Sensitized Solar Cells.

Recently, research and development in the field of dye-sensitized solar cells has been actively advanced, as the technology constitutes a potential alternative to silicon-based photovoltaic devices. Modification of the molecular structure of the dye can enhance the adsorption on the TiO2 surface, improve the light absorption capacity, suppress the charge recombination, increase the electron injection rate, and thereby improve the overall performance of the solar cell. Carbazole and phenothiazine are rigid heterocyclic compounds containing nitrogen as a heteroatom with large π-conjugated skeletons. Phenothiazine differs from carbazole by the presence of sulfur as an additional electron-rich heteroatom. The inclusion of this heteroatom in the structure of the compounds can indeed improve the electron-donating properties, affect the conjugation, and thus affect the optical, electronic, and electrochemical properties of the chromophores as a whole. The difference in planarity when comparing carbazole with phenothiazine can be useful from several points of view. The planar structure of carbazole increases the degree of conjugation and the electron transfer capacity, which can increase the photocurrent of the cell. The nonplanar structure of phenothiazine helps to prevent π-stacking aggregation. This review comprehensively summarizes the progress in the field of synthesis of organic dyes for solar cells with an emphasis on the comparative analysis of two electron-donating moieties, carbazole and phenothiazine. In addition, the review describes in detail the relationship between the structure of the compounds (dyes), their properties, and the performance of solar cells.

Gel Electrolytes in the Development of Textile-Based Power Sources

The interest in flexible and wearable electronics is increasing in both scientific research and in multiple industry sectors, such as medicine and healthcare, sports, and fashion. Thus, compatible power sources are needed to develop secondary batteries, fuel cells, supercapacitors, sensors, and dye-sensitized solar cells. Traditional liquid electrolytes pose challenges in the development of textile-based electronics due to their potential for leakage, flammability, and limited flexibility. On the other hand, gel electrolytes offer solutions to these issues, making them suitable choices for these applications. There are several advantages to using gel electrolytes in textile-based electronics, namely higher safety, leak resistance, mechanical flexibility, improved interface compatibility, higher energy density, customizable properties, scalability, and easy integration into manufacturing processes. However, it is also essential to consider some challenges associated with these gels, such as lower conductivity and long-term stability. This review highlights the application of gel electrolytes to textile materials in various forms (e.g., fibers, yarns, woven, knit, and non-woven), along with the strategies for their integration and their resulting properties. While challenges remain in optimizing key parameters, the integration of gel electrolytes into textiles holds immense potential to enhance conductivity, flexibility, and energy storage, paving the way for advanced electronic textiles.

Synthesis and Photovoltaic Investigation of Novel Triphenylamine- and Phenothiazine-Appended 1H-Pyrazole-3,4-Dicarboxylic Acid Dyes for Dye-Sensitized Solar Cells.

In the present study, we employed a comprehensive multi-step synthetic methodology to design and develop two novel organic dyes, TP-CLN and PT-CLN, using sydnone as a synthon. These compounds feature a donor-π-acceptor (D-π-A) architecture and are classified as chalcones. The resulting molecules were intricately attached to one-dimensional cadmium sulfide nanowires (1D CdS NWs), functioning as highly efficient light energy harvesters for dye-sensitized solar cells (DSSCs). The process of anchoring the dye onto the nano-network of CdS NWs was accomplished using simple solution chemistry, which proved to be both straightforward and efficient. We assessed the sensitizing capabilities of the synthesized materials through various methods, including optical and electrochemical investigations, density functional theory (DFT) simulations, and comprehensive photovoltaic assessments. A detailed analysis of the Dye-Sensitized Solar Cells containing PT-CLN revealed a photovoltaic efficiency 3.35 times higher (0.342%) than that of bare CdS NWs (0.102%) under standard light illumination. Similarly, the use of TP-CLN demonstrated a significant 3.08-fold improvement (0.314%) in photovoltaic efficiency. These results not only provide strong empirical support for the enhancement of external quantum efficiency (EQE) but also show a remarkable consistency with findings from optical examinations.

Analysis of photovoltaic (PV) efficiency of TiO2/SiO2 mixed with CuO/ZnO composites in dye-sensitized solar cells (DSSCs)

In this article, fabricated DSSCs with CuO-TiO2, ZnO-TiO2 mixed oxide with chlorophyll dye, and CuO-SiO2 and ZnO-SiO2 mixed oxide with Betalains dye on the indium tin oxide (ITO) substrate with different stoichiometric ratios are considered for study. The XRD analysis and FTIR spectroscopy were used to investigate structural and morphological analyses of composites. The values of Isc and Voc were used to calculate the fill factor (FF). The maximum power conversion efficiency was 1.26% for composite 60 wt. % SiO2:40 wt. % CuO with Betalains dye and 0.84% for composite 60 wt.% TiO2:40 wt.% ZnO with chlorophyll dye.

Theoretical Investigation of 1,4 - Naphthalene Dicarboxylic Acid based Dye-Sensitized Solar Cells (DSSC)

Theoretical Investigation of 1,4 - Naphthalene Dicarboxylic Acid based Dye-Sensitized Solar Cells (DSSC)

Effect of Mn doping on the performance of ZnO-based dye-sensitized solar cells

Abstract This study investigates the effect of Mn dopant on the performance of ZnO as an electron transport layer (ETL) in dye-sensitized solar cell (DSSC) applications. The Mn concentrations in the ZnO films were varied for 0 wt% (MZ1), 0.8 wt% (MZ2), and 1.3 wt% (MZ3) through the spray pyrolysis method. As a result, X-ray diffraction (XRD) analysis revealed a reduction in ZnO crystallite size from 25 nm (MZ1) to 23 nm (MZ2) and 21 nm (MZ3). Field effect scanning electron microscopy (FESEM) showed a corresponding decrease in particle size, from 265 nm (MZ1) to 220 nm (MZ2) and 209 nm (MZ3). UV–vis absorption spectroscopy indicated a slight reduction in bandgap energy, from 3.19 eV (MZ1) to 3.15 eV (MZ3). For dye-sensitized solar cells (DSSC) application, a device structure consisting of indium tin oxide (ITO)/ZnO:Mn/dye/electrolyte/graphite was fabricated. J-V measurements demonstrated that the efficiency of DSSCs improved from 1.8% (MZ1) to 2.7% (MZ2) and 3.9% (MZ3). This study reveals the potential of Mn-doped ZnO as a cost-effective and efficient material for optimizing DSSC performance, contributing to the development of sustainable energy technologies.

Effect of Electron Donor Groups on Optoelectronic Properties of Betalain Dyes: A DFT Study.

A sensitizer is a vital component of dye-sensitized solar cells (DSSCs); it absorbs incident photons, excites electrons, and facilitates charge transfer to the semiconductor. In the present work, modification of betalain dyes through grafting of electron donor groups has been performed. The reported optoelectronic properties of the investigated dyes are determined using density functional theory (DFT) and time-dependent DFT methods. The investigated sensitizers exhibit maximum absorption between 400 and 442 nm with light-harvesting efficiencies exceeding 93%. Favorable interactions are observed between the dyes and the hydrogenated TiO2 cluster, (TiO2)6H3. The obtained binding energies range from -1.39 to -0.97 eV in the gas phase and -0.31 to -0.03 eV in water. The electronic spectra of the dye@TiO2 complexes show broader and intensive bands with bathochromic shifts when compared to the individual dyes. The charge density distribution in the complexes indicates appropriate ability of the dyes for charge injection to the semiconductor. Among the considered dyes, the most promising candidates for use in DSSCs have been selected.

Polarity-tunable dye-sensitized optoelectronic artificial synapses for physical reservoir computing-based machine vision

Conventional machine vision systems process huge time-series data per second, presenting significant challenges for edge-device applications due to limitations in data transfer and storage. Inspired by the human visual system, artificial optoelectronic synapses replicating synaptic responses have emerged as promising solutions. However, achieving color recognition comparable to human vision remains challenging. Moreover, most optoelectronic artificial synapses rely on photocurrent-based operation, producing low current values and necessitating external circuits. This study reports a self-powered optoelectronic artificial synapse capable of distinguishing wavelengths with a resolution of 10 nm by integrating dye-sensitized solar cells. The device exhibits synaptic responses to light pulses and bipolar responses when exposed to different wavelengths. The wavelength-dependent bipolar behavior enables exceptional separation capabilities, achieving six-bit resolution with 64 distinct states and supporting multiple logic operations, including AND, OR, and XOR, within a single device. Additionally, the device leverages distinct responses to red, green, and blue light irradiation for physical reservoir computing, facilitating the classification of color-coded human motion with an accuracy of 82%. These findings advance the development of optoelectronic artificial synapses for precise, human-eye-like color discrimination.

Optoelectronic Devices Analytics: MachineLearning-Driven Models for Predicting the Performance of a Dye-Sensitized Solar Cell

Optoelectronic devices, which combine optics and electronics, are vital for converting light energy into electrical energy. Various solar cell technologies, such as dye-sensitized solar cells (DSSCs), silicon solar cells, and perovskite solar cells, among others, belong to this category. DSSCs have gained significant attention due to their affordability, flexibility, and ability to function under low light conditions. The current research incorporates machine learning (ML) models to predict the performance of a modified Eu3+-doped Y2WO6/TiO2 photo-electrode DSSC. Experimental data were collected from the “Dryad Repository Database” to feed into the models, and a detailed data visualization analysis was performed to study the trends in the datasets. The support vector regression (SVR) and Random Forest regression (RFR) models were applied to predict the short-circuit current density (Jsc) and maximum power (Pmax) output of the device. Both models achieved reasonably accurate predictions, and the RFR model attained a better prediction response, with the percentage difference between the experimental data and model prediction being 0.73% and 1.01% for the Jsc and Pmax respectively, while the SVR attained a percentage difference of 1.22% and 3.54% for the Jsc and Pmax respectively.

Advancing Dye-Sensitized Solar Cells: Synergistic Effects of Polyaniline, Graphene Oxide, and Carbon Nanotubes for Enhanced Efficiency and Sustainability Developments.

This paper provides an in-depth look at the latest developments in dye-sensitized solar cell (DSSC) technology. It focuses on the use of special materials, like polyaniline (PANI), graphene oxide (GO), and carbon nanotubes (CNTs). These materials improve the efficiency and stability of solar cells, and this study offers significant insights into their characteristics and practical uses. This article examines major trends in material selection, structural optimization, and manufacturing procedures by juxtaposing results from scientific literature with advancements in the patent arena, addressing the issues of developing next-generation solar cell designs. We examine the synergistic effects of PANI's stability, GO's electrical conductivity, and CNTs' mechanical strength, highlighting their roles in enhancing light absorption, charge transfer efficiency, and overall device longevity. Bibliometric data from sites, like Scopus and Lens.org, indicate substantial advancements in energy conversion efficiency and decreases in charge transfer resistance. Patents, like WO 2020 and EP3824-B1, illustrate the increasing significance of flexibility, resilience, and scalability in solar cell designs. Biopolymer-based electrolytes made from chitosan, guar gum, and starch are examples of sustainable solutions that show better ionic conductivity and mechanical stability, making them eco-friendly choices. This paper highlights the significance of nano and microfillers in enhancing electron mobility and minimizing resistive losses. Practical implementations, including photovoltaic chargers and flexible solar panels, illustrate the conversion of theoretical advancements into functional technologies. The study delineates future research avenues, promoting the utilization of nanocomposites and catalytic materials to enhance solar cell performance and thus facilitate sustainable and scalable energy solutions to address escalating global energy demands.