研究目的
Investigating the thermal stability and efficiency of inorganic mixed halide perovskite solar cells fabricated using a vapor deposition technique.
研究成果
The study demonstrates that inorganic mixed halide perovskite solar cells fabricated using a layer-by-layer vapor deposition technique exhibit excellent thermal stability with no degradation in performance at 200 °C for 72 hours. The cells also show a high photoconversion efficiency of 11.8%, making them suitable for use in tandem solar cells in high-temperature environments.
研究不足
The study focuses on the thermal stability and efficiency of inorganic perovskite solar cells but does not address long-term stability under real-world operating conditions including humidity and UV exposure.
1：Experimental Design and Method Selection:
A layer-by-layer vapor deposition technique was employed to fabricate inorganic mixed halide perovskite solar cells. The technique involved the sequential deposition of thin layers of PbI2 and CsBr precursors.
2：Sample Selection and Data Sources:
FTO coated glass was used as the substrate. The perovskite layer was deposited on In:CdS coated FTO substrates.
3：List of Experimental Equipment and Materials:
A thermal evaporation system for depositing In:CdS and the perovskite layer, a nitrogen glove box for annealing and device fabrication, and a solar simulator for performance testing.
4：Experimental Procedures and Operational Workflow:
The substrates were cleaned and coated with In:CdS. The perovskite layer was deposited using a layer-by-layer technique followed by annealing. P3HT was spin-coated as the hole transport layer, and gold was evaporated as the top contact.
5：Data Analysis Methods:
X-ray diffraction for material analysis, current-density measurements under illumination for device performance, and quantum efficiency measurements for optical characterization.
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