研究目的
To investigate the photovoltaic performance of sol–gel derived BiFeO3-based heterostructures via compositional modi?cation for solar energy applications.
研究成果
RGO/BFO/TiO2 thin film exhibits superior photovoltaic performance with a power conversion efficiency of 3.11%, attributed to the favorable effects of TiO2 and RGO. This work provides a new approach to enhance the efficiency of ferroelectric thin films for photovoltaic applications.
研究不足
The study focuses on sol–gel derived thin films and their photovoltaic performance, potentially limiting the applicability to other fabrication methods or materials. The absence of detailed resistance information for TiCl4-modified samples may affect the comprehensive understanding of their performance.
1：Experimental Design and Method Selection:
Sol-gel method is used to synthesize various thin films including BFO, RGO/BFO, RGO/BFO/TiO2, TiCl4-modified RGO/BFO/TiO2, and MAPI/RGO/BFO/TiO2 on Pt/Ti/SiO2/Si substrate.
2：Sample Selection and Data Sources:
Bi(NO3)3·5H2O, Fe(NO3)3·9H2O, and 2-methoxyethanol are used for BFO precursor. RGO is obtained by adding GO in deionized water under ultrasonic oscillation and mixing with hydrazine hydrate solution. MAPI is produced by dissolving PbI in CH6IN in a one-step process.
3：List of Experimental Equipment and Materials:
XRD (X-PertPro, PANalytical), FESEM (S-4800, Hitachi), UV–Vis spectrophotometer (UV-2550, Shimadzu), and a Xenon lamp solar simulator.
4：Experimental Procedures and Operational Workflow:
Spin coating combined with annealing process layer-by-layer is used for thin film preparation.
5：Data Analysis Methods:
XRD for crystalline investigation, FESEM for morphologies, UV–Vis for band gap calculation, and J–V response for photovoltaic performance.
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