期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 2021, 期 25, 页码 2533-2538出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.202100329
关键词
Ambient temperature; Defects; Perovskite phases; Photophysics; Solar cells
资金
- ANR [ANR-18-CE05-0021-01, 2019-1R1M08]
- Agence Nationale de la Recherche (ANR) [ANR-18-CE05-0021] Funding Source: Agence Nationale de la Recherche (ANR)
The ambient fabrication temperature inside a glove box plays a crucial role in determining the overall power conversion efficiency in solar cells based on MAPI hybrid perovskites, with a minor temperature variation affecting both reproducibility and efficiency. The study concludes that the variation in solvent vapor pressure impacts the crystallization process, leading to increased trap density within the perovskite bandgap.
The ambient fabrication temperature inside the glove box is found to play an important role in determining the overall power conversion efficiency in solar cells based on CH3NH3PbI3 (MAPI) hybrid organic-inorganic perovskites. We find that a variation of the ambient temperature of only 10 degrees C during the fabrication process has a crucial impact on both the reproducibility and the efficiency of the devices. Atomic Force Microscopy, XRD, UV-Vis absorption spectroscopy, and electroluminescence studies have been carried out to investigate the origin of this behavior. We conclude that the partial vapor pressure variation of the solvent impacts the crystallization process, inducing an increased density of traps within the bandgap of the perovskite.
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