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Efficient and Stable Inverted Perovskite Solar Cells Incorporating Secondary Amines.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Chen, Huiying Saidaminov, Makhsud I. Wang, Fei Johnston, Andrew Peng, Zijian Xu, Kaimin Zhou, Wenjia Liu, Zhenghao Qiao, Lu Wang, Xiao Xu, Siwen Li, Jiangyu Long, Run Ke, Youqi Sargent, Edward. H. Ning, Zhijun |
| Copyright Year | 2019 |
| Abstract | Large-bandgap perovskites offer a route to improve the efficiency of energy capture in photovoltaics when employed in the front cell of perovskite-silicon tandems. Implementing perovskites as the front cell requires an inverted (p-i-n) architecture; this architecture is particularly effective at harnessing high-energy photons and is compatible with ionic-dopant-free transport layers. Here, a power conversion efficiency of 21.6% is reported, the highest among inverted perovskite solar cells (PSCs). Only by introducing a secondary amine into the perovskite structure to form MA1- x DMAx PbI3 (MA is methylamine and DMA is dimethylamine) are defect density and carrier recombination suppressed to enable record performance. It is also found that the controlled inclusion of DMA increases the hydrophobicity and stability of films in ambient operating conditions: encapsulated devices maintain over 80% of their efficiency following 800 h of operation at the maximum power point, 30 times longer than reported in the best prior inverted PSCs. The unencapsulated devices show record operational stability in ambient air among PSCs. |
| Starting Page | e1903559 |
| Ending Page | e1903559 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1002/adma.201903559 |
| PubMed reference number | 31566819 |
| Journal | Medline |
| Alternate Webpage(s) | https://light.utoronto.ca/wp-content/uploads/2019/11/Chen_et_al-2019-Advanced_Materials.pdf |
| Alternate Webpage(s) | https://light.utoronto.ca/wp-content/uploads/2019/10/Chen_et_al-2019-Advanced_Materials.pdf |
| Alternate Webpage(s) | https://doi.org/10.1002/adma.201903559 |
| Journal | Advanced materials |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
