Controlled Growth of Porous InBr3: PbBr2 Film for Preparation of CsPbBr3 in Carbon-Based Planar Perovskite Solar Cells
| Autor: | Daoyu Yu, Xianwei Meng, Hansi Xu, Bingtao Feng, Kailin Chi, Qian Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Chemical Engineering Energy conversion efficiency chemistry.chemical_element Substrate (electronics) CsPbBr3 porous PbBr2 film Chemistry Planar chemistry Chemical engineering General Materials Science Solubility Porosity Current density Carbon planar perovskite solar cells InBr3 QD1-999 Perovskite (structure) |
| Zdroj: | Nanomaterials, Vol 11, Iss 2408, p 2408 (2021) Nanomaterials Volume 11 Issue 9 |
| ISSN: | 2079-4991 |
| Popis: | Due to the low solubility of CsBr in organic solvents, the CsPbBr3 film prepared by the multi-step method has holes and insufficient thickness, and the light absorption capacity and current density of the perovskite film hinder the further improvement in the power conversion efficiency (PCE) of CsPbBr3 solar cells. In this study, we introduced InBr3 into the PbBr2 precursor solution and adjusted the concentration of PbBr2, successfully prepared PbBr2 with a porous structure on the compact TiO2 (c-TiO2) substrate to ensure that it fully reacted with CsBr, and obtained the planar carbon-based CsPbBr3 solar cells with high-quality perovskite film. The results reveal that the porous PbBr2 structure and the increasing PbBr2 concentration are beneficial to increase the thickness of the CsPbBr3 films, optimize the surface morphology, and significantly enhance the light absorption capacity. Finally, the PCE of the CsPbBr3 solar cells obtained after conditions optimization was 5.76%. |
| Databáze: | OpenAIRE |
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