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Dependence of Photovoltaic Properties of Spray-Pyrolyzed F-Doped SnO2 Thin Film on Spray Solution Preparation Method
摘要： Spray pyrolysis deposition of SnCl2.2H2O- and NH4F-containing solution is an appropriate method for deposition of ?uorine-doped tin oxide (FTO), which has extensive applications in photovoltaic devices. According to a literature review, several spray preparation methods have been studied. These methods lead to both precipitated and unprecipitated spray solutions. Precipitated and unprecipitated solutions were used for deposition of FTO thin ?lms. FTO obtained from unprecipitated solution yielded the lowest sheet resistance and resistivity, which was due to its highest electron concentration (ne). However, precipitation had no in?uence on electron mobility. The x-ray diffraction patterns of precipitates showed the presence of Sn- and F-containing compounds, which implied partial depletion of F and Sn from solutions. As a result, a lower amount of F(cid:2) ions was incorporated into FTO, which led to lower ne. In addition, partial depletion of Sn led to slightly smaller FTO thickness. Finally, FTO thin ?lm deposited from unprecipitated solution gave the highest ?gure of merit. This means that precipitation in the precursor solution has deleterious effects on electrical and optical properties.
关键词： Fluorine-doped tin oxide,spray pyrolysis deposition,transparent conducting oxide,thin ?lm
更新于2025-09-11 14:15:04
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[IEEE 2018 International Semiconductor Conference (CAS) - Sinaia, Romania (2018.10.10-2018.10.12)] 2018 International Semiconductor Conference (CAS) - Comparative Study of the Electrical Properties of CZTS-TiO2 and CZTS-ZnO Heterojunctions for PV Applications
摘要： Two heterojunctions based on Cu2ZnSnS4 were obtained as thin films, on FTO glass, by spray pyrolysis deposition. The choice of the n-type layer (TiO2 or ZnO) has impacted the nucleation and growth of the CZTS layers deposited on top. Crystalline thin films were obtained with drastically different morphologies. Small spherical grains promoted a better match at the interface between TiO2 and CZTS, while the hexagonal plates of ZnO promoted discontinuations. Both junctions proved photosensitive and gave good rectifying behavior but efficiencies charge than recombination at the interface or in the CZTS layer. suggest 0.01% lower
关键词： spray pyrolysis deposition,CZTS-based heterojunctions,interface,curent-voltage variation
更新于2025-09-09 09:28:46