Affiliation:
1. Key Laboratory of Advanced Light Conversion Materials and Biophotonics Department of Chemistry, School of Chemistry and Life Resources Renmin University of China Beijing 100872 P. R. China
2. School of Electrical and Electronic Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
3. Beijing National Laboratory for Molecular Sciences State Key Laboratory for Structural Chemistry of Unstable and Stable Species College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
Abstract
AbstractSignificant progress is made in perovskite solar cells (PSCs) with high power conversion efficiency (PCE). However, the potential issue of lead leakage creates a critical challenge to its commercialization. Therefore, a convenient internal encapsulation strategy is proposed by introducing a polyvinyl butyral (PVB) polymer at the perovskite/electron transport layer interface. This strategy enhances the performance of PSCs and effectively suppresses lead leakage. The introduced PVB layer plays a crucial role in mitigating ion migration, optimizing energy levels, and preventing moisture penetration. Thus, PSCs with PVB modifications generally perform better, with an improved PCE of 22.47% and reduced hysteresis. Furthermore, these modified devices exhibit enhanced stability under light soaking and thermal stress, effectively mitigating lead leakage. This innovative approach not only enhances the efficiency of PSCs but also addresses the challenges associated with lead leakage, paving the way for more sustainable and commercially viable solar cell technologies.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Cited by
1 articles.
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