Electron-deficient 4-nitrophthalonitrile passivated efficient perovskite solar cells with efficiency exceeding 22%
Longhui Deng, Zhihao Zhang, Yifeng Gao, Qiu Xiong, Zicheng Li, Jianbin Xu, Zilong Zhang, Jun Chen, Peng Gao
Abstract
We proved that electron-deficient 4-nitrophthalonitrile with σ–π accepting NO<sub>2</sub> and –CN can passivate the charged defects in perovskite solar cells, which achieve a power conversion efficiency (PCE) of 22.1% and improved stability.
Topics & Concepts
PassivationPerovskite (structure)Energy conversion efficiencyMaterials scienceChemical engineeringComposite materialOptoelectronicsLayer (electronics)EngineeringPerovskite Materials and ApplicationsConducting polymers and applicationsOrganic and Molecular Conductors Research