研究目的
Investigating the application of copper thiocyanate (CuSCN) as a back-contact material for ZMO/CdTe solar cells to improve power conversion efficiency.
研究成果
The study demonstrates that solution-processed CuSCN is an efficient back-contact material for ZMO/CdTe solar cells, achieving a power conversion efficiency of 16.7%. The research confirms the robustness of CuSCN treatment and its compatibility with ZMO/CdTe devices, suggesting a promising direction for future solar cell development.
研究不足
The study highlights the sensitivity of ZMO films to atmospheric conditions and the challenges in post-treatment processes for high-performance CdTe solar cells. The research also notes the potential for further optimization of CuSCN film thickness and annealing conditions.
1：Experimental Design and Method Selection:
The study involved the fabrication of ZMO/CdTe solar cells with CuSCN as the back-contact material. The impact of post-annealing temperature and CuSCN film thickness on device performance was systematically investigated.
2：Sample Selection and Data Sources:
Fluorine doped tin oxide coated glass (FTO) was used as the substrate. ZMO and CdTe films were deposited using radio frequency sputter and close-space sublimation (CSS) techniques, respectively.
3：List of Experimental Equipment and Materials:
Equipment included a radio frequency sputter system, CSS chamber, and thermal evaporator. Materials included FTO glass, ZMO target, CdTe, CuSCN powder, and ammonium hydroxide.
4：Experimental Procedures and Operational Workflow:
The process involved cleaning the FTO substrate, depositing ZMO and CdTe films, CdCl2 activation treatment, CuSCN deposition via spin coating, and annealing at various temperatures. Gold was then deposited as the back electrode.
5：Data Analysis Methods:
Device performance was characterized using current density-voltage (J-V) curves under AM1.5G illumination. External quantum efficiency (EQE) spectra and temperature-dependent current-voltage (J-V-T) measurements were also performed.
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