| Autor: |
Sang Il Seok, Yonghui Lee, Jihun Jang, Jin Wook Yoo, Sang-Geun Ji, Eunseo Noh, Unsoo Kim, Mansoo Choi, Sungtak Hong |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Joule. 5:2420-2436 |
| ISSN: |
2542-4351 |
| DOI: |
10.1016/j.joule.2021.08.005 |
| Popis: |
Summary In small-area perovskite solar cells, efficiencies of >25% have been achieved using an antisolvent dripping technique; however, it is not applicable for coatings on an industrial scale. Currently, large-area devices based on scalable perovskite coatings still show a very large gap with small-area devices. This means that a uniform perovskite coating and defect control on large-area devices are not as secure as they are on small devices. Here, we report the deposition of dense and uniform perovskite films using an air-knife-assisted bar-coating employing a perovskite [(FAPbI3)0.95(MAPbBr3)0.05] precursor solution dissolved in 2-methoxyethanol. A pinhole-free and homogeneous surface morphology was achieved by adding n-cyclohexyl-2-pyrrolidone to ensure a balance between rapid nucleation and slowed crystal growth in the precursor solution. By applying surface passivation with acetylcholine bromide and laser etching to thin layers, mini-modules with an aperture area of 31 cm2 were fabricated, attaining an efficiency of >20% (17.53% in the efficiency certified by a quasi-steady-state protocol). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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