Transparency In Visible Light Range Research Articles

Mini Review on PEDOT:PSS as a Conducting Material in Energy Harvesting and Storage Devices Applications

Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), one of the conducting polymers, is widely used as a conducting material in various applications. PEDOT:PSS possesses high electrical conductivity, optical transparency in visible light range, good chemical and physical stability in ambient state, etc. Furthermore, PEDOT:PSS offers the advantages of flexibility and possibility of solution-based process, which makes it suitable for use in flexible electronic devices. In this mini review, the applications of PEDOT:PSS as a conductive parts in energy harvesting and storage technologies are discussed and summarized.

A critical review on semitransparent organic solar cells

Semitransparent solar cells not only can generate electricity but also exhibit promising application in facades and roofs of building, as well as the coatings of vehicle. Ideal semitransparent solar cells should have a high utilization efficiency of ultraviolet and near infrared photons, and maintain an appropriate balance between absorption and transparency in visible light range. Organic semiconducting materials with adjustable optical band gap own great potential in preparing highly efficient semitransparent organic solar cells (OSCs). There are great challenges in achieving semitransparent electrodes with good conductivity and high transmittance in visible light range, as well as high reflectance in ultraviolet and near infrared range. In this critical review, we summarize the recent progress of semitransparent OSCs, concentrating on organic semiconducting materials, semitransparent top electrode and device engineering. Semitransparent OSCs have attracted more and more attention due to its great potential in energy source in door, electricity-generating windows, building-integrated photovoltaics and agricultural greenhouse. Semitransparent OSCs have attracted more and more attention due to its great potential in electricity-generating windows, building-integrated photovoltaics and agricultural greenhouse. This review comprehensively summarizes recent progresses of organic material, semitransparent top electrode and device engineering, the challenges on achieving semitransparent OSCs are highlighted to promote the development of this field. • Recent development of organic materials with strong ultraviolet or near infrared absorption were summarized. • The key parameters for evaluating the performance of semitransparent OSCs were discussed. • This review comprehensively summarized recent progress of transparent top electrodes. • The light management methods and device designs are firstly comprehensively reported.

Review on applications of PEDOTs and PEDOT:PSS in perovskite solar cells

Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is the most successful conducting polymer in terms of practical application. It has good film forming ability, high transparency in visible light range, high mechanical flexibility, high electrical conductivity, and good stability in air. PEDOT:PSS has wide applications in many areas. This review summarizes its new applications in perovskite solar cells and approaches to modify the PEDOT:PSS layer for better device performance with the corresponding mechanisms. The most cutting edge progresses in perovskite solar cells with PEDOT:PSS are highlighted.

Electrochromic nickel oxide thin films by a simple solution process: Influence of post-treatments on growth and properties

Nickel oxide is one of the few inorganic compounds that combines p-type behavior and large band gap making it very attractive for numerous optoelectronic applications. A very simple and reproducible method to grow nickel oxide thin films with accurate control of their structural, optoelectronic and electrochromic properties is reported in this work. The procedure consists in spin coating a nickel (II) 2-ethylhexanoate solution, followed by an ultraviolet (UV) treatment and a thermal annealing at moderate temperature (Tanneal < 300 °C). The impact of the UV irradiation and thermal annealing post-treatments on the film formation mechanism and on the morphological, crystalline and optoelectronic properties of the material was explored. Following careful optimization of the post-treatment conditions, the formation of p-type nickel oxide films with high transparency in visible light range, band gap values between 3.6 and 3.8 eV and a doping level up to 8 × 1020 cm−3 (as determined by Mott-Schottky measurements) has been achieved. Finally, NiOx layers presented efficient electrochromic behavior with >500 coloration/bleaching cycles showing negligible degradation.

Preparation and investigation of waterborne fluorinated polyacrylate/silica nanocomposite coatings

Abstract Fluorinated polyacrylate/silica nanocomposite particles were synthesized by methyl methacrylate (MMA), butyl acrylate (BA) and 1H,1H,2H,2H-heptadecafluorodecyl methacrylate (FA) via in situ miniemulison polymerization. Morphology of nanocomposite particles, surface microstructure, chemical composition, hydrophobicity, transparency and thermal performance of the films were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), water contact angle, Fourier transform infrared spectra (FT-IR), ultraviolet–visible spectroscopy (UV–vis), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and thermogravimetry (TGA) analyses. It is shown that the fluorinated polyacrylate/silica nanocomposite particles present “currunt-bun like” morphology. The hydrophobicity of fluorinated polyacrylate film was increased after incorporation of silica, which was due to the surface enrichment of fluorine and rough surface of the nanocomposite film. Moreover, the fluorinated polyacrylate/silica nanocomposite films exhibited high transparency in visible light range.

Review on application of PEDOTs and PEDOT:PSS in energy conversion and storage devices

Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is the most successful conducting polymer in terms of practical application. It possesses many unique properties, such as good film forming ability by versatile fabrication techniques, superior optical transparency in visible light range, high electrical conductivity, intrinsically high work function and good physical and chemical stability in air. PEDOT:PSS has wide applications in energy conversion and storage devices. This review summarizes its applications in organic solar cells, dye-sensitized solar cells, supercapacitors, fuel cells, thermoelectric devices and stretchable devices. Approaches to enhance the material/device performances are highlighted.

Stability of indium–tin-oxide and its optical properties: A first-principles study

Various doping sites of Sn in the In2O3 system have been modeled and simulated by the first-principles. The energy favorable site of Sn in In2O3 is found to be on the b-site, which is consistent with experiments. The doping of Sn into interstitial sites is experimentally possible due to the fluctuation in energy, and the intrinsic oxygen vacancies in In2O3 favor the formation of Sni. As Sni in doped ITO can drastically change the transparency in the visible light range, it is necessary to control the preparatory conditions to avoid Sn doping in interstitial sites for realizing ideal transparency in visible light range. By using the LDA+U approach, the band structures of In2−xSnxO3 (x≤0.125) are calculated, which are in substantially better agreement with the experimental values than previous first-principles results.