研究目的
Investigating the improvement of substrate structured Sb2S3 solar cells with MoSe2 interlayer to enhance power conversion efficiency and carrier transport.
研究成果
The introduction of a thin MoSe2 interlayer significantly improves the crystallization of Sb2S3 films, induces (hk1) orientations, and enhances carrier transport, leading to an increase in power conversion efficiency from 1.36% to 1.86%. The study demonstrates the potential of interface engineering in improving the performance of Sb2S3 solar cells.
研究不足
The study focuses on the substrate structure of Sb2S3 solar cells and the effect of MoSe2 interlayer. The limitations include the specific conditions for MoSe2 synthesis and Sb2S3 deposition, which may not be universally applicable. Further optimization of the interlayer thickness and deposition conditions could enhance performance.
1：Experimental Design and Method Selection:
The study involves the synthesis of a thin MoSe2 layer on Mo substrate followed by Sb2S3 thin film deposition using rapid thermal evaporation (RTE). X-Ray Diffraction (XRD) and Kelvin probe force microscopy (KPFM) were employed to analyze the film's crystallization and surface potential.
2：Sample Selection and Data Sources:
Sb2S3 thin films were deposited on Mo and MoSe2/Mo substrates. The samples were characterized using XRD, Raman spectroscopy, SEM, AFM, and KPFM.
3：List of Experimental Equipment and Materials:
Equipment includes rapid thermal evaporation system, XRD, Raman spectrometer, SEM, AFM, KPFM, and solar simulator. Materials include Sb2S3, MoSe2, Mo substrate, and CdS buffer layer.
4：Experimental Procedures and Operational Workflow:
The process involves pre-selenization of Mo substrate, deposition of Sb2S3 thin film, characterization of film properties, and fabrication of solar cells for performance evaluation.
5：Data Analysis Methods:
Data analysis involved comparing XRD patterns, KPFM surface potential maps, and solar cell performance metrics (J-V curves, EQE, C-V measurements).
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