Affiliation:
1. Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Soochow University Suzhou 215123 China
2. College of Energy Soochow Institute for Energy and Materials Innovations Soochow University Suzhou 215006 China
Abstract
AbstractOxygen is difficult to be physically removed. Oxygen will be excited by light to form free radicals which further attack the lattice of perovskite. The stabilization of α‐FAPbI3 against δ‐FAPbI3 is the key to optimize perovskite solar cells. Herein, the simple molecule, benzaldehyde (BAH) is adopted. The photochemical shield will be established in perovskite layer. Moreover, heterogeneous nucleation induced by BAH enhances the crystallization of α‐FAPbI3. Consequently, the stability of device is improved significantly. The target device maintains 95% of original power conversion efficiency after 1500 h under air conditions and light‐emitting diode light. The power conversion efficiency increases from 23.21% of pristine device to 24.82% of target device.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Jiangsu Province
Higher Education Discipline Innovation Project
Cited by
5 articles.
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