研究目的
Investigating the preparation of CdTe ink from CdTe powder in thiol-amine cosolvents with the addition of Triton X-100 surfactant and its application in synthesizing CdTe thin films for solution-processed CdTe-based photovoltaics.
研究成果
The developed surfactant-mediated CdTe ink is highly promising for solution-processed CdTe-based photovoltaics, offering uniform, smooth, and homogeneous thin films with high absorbance and suitable electrical properties for solar cell applications.
研究不足
The study is limited by the use of a low vacuum chamber for annealing, which may introduce oxygen contamination at higher temperatures, affecting film quality. Optimization of surfactant concentration and annealing conditions could further improve film properties.
1:Experimental Design and Method Selection:
Preparation of CdTe ink by directly dissolving CdTe powder in thiol-amine cosolvents with Triton X-100 surfactant at 50 °C. Synthesis of CdTe thin films via spin coating method.
2:Sample Selection and Data Sources:
High-purity CdTe powder, Triton X-100 surfactant, ethylenediamine, and 1,2-ethanedithiol were used. Glass substrates were cleaned for film deposition.
3:List of Experimental Equipment and Materials:
SEM (Carl Zeiss, Model: EVO-18 Research), XRD with CuKa radiation, micro-Raman measurement system (inVia, Renishaw), FTIR spectrometer, EDX detector, T60 UV–visible Spectrophotometer (PG Instruments).
4:Experimental Procedures and Operational Workflow:
CdTe ink preparation, spin coating on glass substrates, pre-annealing at 100 °C, annealing in a low vacuum chamber at different temperatures.
5:Data Analysis Methods:
XRD for structural analysis, Raman for phase identification, FTIR for bonding nature, EDX for elemental composition, UV–visible spectrophotometry for optical properties, Hall measurement for electrical properties.
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