Efficiency enhancement of CuInS2 quantum dot sensitized TiO2 photo-anodes for solar cell applications

Effect of Uniform Decoration of Ag2S Nanoparticles on Physical Properties of Granular TiO2 Thin Films Synthesized by Using Spin Coating Technique

“…It means that incorporation of Ag2S nanoparticles into TiO2 thin films caused red shift of absorption edge. Therefore, TiO2/Ag2S composite films are expected to use in the light harvesting devices such as solar cells and photoelectrochemical cells [15]. The band gap of pure TiO2 thin film was 3.14 eV, which is comparable to the band gap of TiO2 thin films prepared on glazed porcelain substrates by using sol-gel process [16] and it is decreased to 2.74 eV after incorporation of Ag2S nanoparticles onto TiO2 thin films as shown in Fig.…”

Properties of spray deposited nanocrystalline indium selenide thin films

“…This can be explained by the slight decrease in the thickness of the films deposited at higher temperatures as result of the densification process, forming larger grains [35,41]. The absorbance significantly decreases in the IR spectral range (beneficial fact in the photovoltaic conversion), proving that these optical parameters are morphology-related, and could be corroborated with the multiple scattering on the small-sized grains that lead to a more efficient radiation trapping in UV and Vis [42]. The absorption coefficient, optical band gap and type of transition involved were determined from the absorption data.…”

Effects of the growth temperature on the properties of spray deposited CuInS2 thin films for photovoltaic applications

“…This can be explained by the slight decrease in the thickness of the films deposited at higher temperatures as result of the densification process, forming larger grains [31]. The absorbance significantly decreases in the IR spectral range (beneficial fact in the photovoltaic conversion), proving that these optical parameters are morphology-related, and could be corroborated with the multiple scattering on the small-sized grains that lead to a more efficient radiation trapping in UV and vis [32]. Other composition-related effects are also likely and will be further discussed corroborated with the conduction measurements.…”