In Situ Atmospheric Deposition of Ultrasmooth Nickel Oxide for Efficient Perovskite Solar Cells
| Autor: | Kelvin H. L. Zhang, Le Yang, Judith L. MacManus-Driscoll, Peicheng Xu, Xiao-Jian She, Richard H. Friend, Dawei Di, Robert L. Z. Hoye, Andrew J. Pearson, Aditya Sadhanala, Lana C. Lee, Lin-Song Cui, Neil C. Greenham, Baodan Zhao, Haizhou Lu, Arfa Karani |
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| Rok vydání: | 2018 |
| Předmět: |
Quenching
Fabrication Materials science Atmospheric pressure business.industry Nickel oxide Oxide 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Hysteresis chemistry Optoelectronics General Materials Science 0210 nano-technology business Luminescence Perovskite (structure) |
| Zdroj: | ACS Applied Materials & Interfaces. 10:41849-41854 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Organic-inorganic perovskite solar cells have attracted significant attention due to their remarkable performance. The use of alternative metal-oxide charge-transport layers is a strategy to improving device reliability for large-scale fabrication and long-term applications. Here, we report solution-processed perovskite solar cells employing nickel oxide hole-extraction layers produced in situ using an atmospheric pressure spatial atomic-layer deposition system, which is compatible with high-throughput processing of electronic devices from solution. Our sub-nanometer smooth (average roughness of ≤0.6 nm) oxide films enable the efficient collection of holes and the formation of perovskite absorbers with high electronic quality. Initial solar-cell experiments show a power-conversion efficiency of 17.1%, near-unity ideality factors, and a fill factor of >80% with negligible hysteresis. Transient measurements reveal that a key contributor to this performance is the reduced luminescence quenching trap density in the perovskite/nickel oxide structure. |
| Databáze: | OpenAIRE |
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