Affiliation:
1. Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National University Seoul 08826 South Korea
2. Department of Chemical and Materials Engineering University of Suwon Hwaseong 18323 South Korea
Abstract
AbstractPerovskite solar cells (PSCs) are in the spotlight as promising renewable energy devices by their appealing properties. However, they face challenges both in power conversion efficiency (PCE) and long‐term stability. The presence of surface defects in the PSCs is a significant obstacle to achieving both high efficiency and stability, as these defects cause nonradiative recombination and degradation. Herein, a novel double‐side surface passivation method using phenyltrimethylammonium iodide (PTMAI) salt is applied to remove electronic defects effectively. Furthermore, double‐side passivation with PTMAI contributes to the enhancement of the perovskite crystallinity with the relaxed non‐uniform distribution of local strains. Finally, the efficiency of PSC is significantly improved by double‐side passivation with PTMAI, achieving a PCE of 21.87%. Furthermore, the passivated cell exhibited enhanced long‐term stability, maintaining over 80% of initial PCE after 1860 and 1030 h under 60 °C and 1 sun illumination, respectively.
Funder
Korea Institute of Energy Technology Evaluation and Planning
National Research Foundation of Korea
Subject
Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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