光伏系统
钙钛矿(结构)
无辐射复合
辐射传输
材料科学
能量转换效率
表征(材料科学)
工程物理
环境科学
物理
纳米技术
光电子学
光学
化学
电气工程
工程类
半导体材料
结晶学
半导体
作者
Deying Luo,Rui Su,Wei Zhang,Qihuang Gong,Rui Zhu
标识
DOI:10.1038/s41578-019-0151-y
摘要
Photovoltaic solar cells based on metal-halide perovskites have gained considerable attention over the past decade because of their potentially low production cost, earth-abundant raw materials, ease of fabrication and ever-increasing power-conversion efficiencies of up to 25.2%. This type of solar cells offers the promise of generating electricity at a more competitive unit price than traditional fossil fuels by 2035. Nevertheless, the best research-cell efficiencies are still below the theoretical limit defined by the Shockley–Queisser theory, owing to the presence of non-radiative recombination losses. In this Review, we analyse the predominant pathways that contribute to non-radiative recombination losses in perovskite solar cells and evaluate their impact on device performance. We then discuss how non-radiative recombination losses can be estimated through reliable characterization techniques and highlight some notable advances in mitigating these losses, which hint at pathways towards defect-free perovskite solar cells. Finally, we outline directions for future work that will push the efficiency of perovskite solar cells towards the radiative limit. Non-radiative recombination losses hinder the performance of perovskite solar cells, preventing them from reaching the Shockley–Queisser limit. This Review systematically analyses the origin and impact of non-radiative recombination losses and highlights notable advances in their characterization and mitigation.
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