Affiliation:
1. Department of Physics, Chemistry, and Biology (IFM) Linköping University SE-58 183 Linköping Sweden
2. Department of Chemistry-Ångström Laboratory Physical Chemistry Uppsala University SE‐751 20 Uppsala Sweden
Abstract
Lead‐free halide double perovskites (HDPs) with a chemical formula of A2B+B3+X6 are booming as attractive alternatives to solve the toxicity issue of lead‐based halide perovskites (APbX3). HDPs show excellent stability, a wide range of possible combinations, and attractive optoelectronic features. Although a number of novel HDPs have been studied, the power conversion efficiency of the state‐of‐the‐art double perovskite solar cell is still far inferior to that of the dominant Pb‐based ones. Understanding the fundamental challenges is essential for further increasing device efficiency. In this review, HDPs with attractive electronic and optical properties are focused on, and current challenges in material properties and device fabrication that limit high‐efficiency photovoltaics are analyzed. Finally, the promising approaches and views to overcome these bottlenecks are highlighted.
Subject
Electrical and Electronic Engineering,Energy Engineering and Power Technology,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
32 articles.
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