All-Inorganic CsPbBr3 Perovskite Solar Cells with 10.45% Efficiency by Evaporation-Assisted Deposition and Setting Intermediate Energy Levels
| Autor: | Suwei Li, Junyou Yang, Yao Tan, Shuiping Li, Peng Xu, Hui Lai, Ying Chen, Xin Li |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Energy conversion efficiency Photovoltaic system Evaporation Perovskite solar cell 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Chemical engineering Phase (matter) General Materials Science Relative humidity 0210 nano-technology Layer (electronics) Perovskite (structure) |
| Zdroj: | ACS Applied Materials & Interfaces. 11:29746-29752 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.9b06356 |
| Popis: | Nowadays, inorganic CsPbBr3 perovskite is emerging as a promising candidate as a light-absorbing layer in photovoltaic devices due to its excellent photoelectric property and superior stability under humidity and thermal attacks in comparison with organic cation-based hybrid perovskites. However, the impure perovskite phase and severe interfacial charge recombination have limited the further improvement of device performance. In this work, a vapor-assisted solution technique was introduced to prepare a high-purity CsPbBr3 film in a perovskite solar cell (PSC). To further reduce the electron-hole recombination and enhance charge extraction, we introduced the novel intermediate energy level of manganese sulfide (MnS) as a hole transport layer in CsPbBr3 PSC. The as-optimized CsPbBr3 PSC based on all-inorganic transport layers delivers a power conversion efficiency (PCE) of 10.45% in comparison with 8.16% for the device free of an intermediate layer, which is one of the highest PCEs achieved among the CsPbBr3-based PSCs to date. Moreover, the optimized device retained 80% PCE of its initial efficiency over 90 days under 80% relative humidity at 85 °C, indicating an excellent environmental tolerance to boost the commercial application of low-cost, efficient, and stable all-inorganic PSCs. |
| Databáze: | OpenAIRE |
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