1. Recent progress in mixed a-site cation halide perovskite thin-films and nanocrystals for solar cells and light-emitting diodes
- Author
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Mahdi Malekshahi Byranvand, Clara Otero‐Martínez, Junzhi Ye, Weiwei Zuo, Liberato Manna, Michael Saliba, Robert L. Z. Hoye, Lakshminarayana Polavarapu, Royal Academy of Engineering, Royal Academy Of Engineering, Byranvand, Mahdi Malekshahi [0000-0001-6250-6005], Polavarapu, Lakshminarayana [0000-0002-0338-2898], and Apollo - University of Cambridge Repository
- Subjects
HOLE TRANSPORT LAYER ,Technology ,spectroscopy ,synthesis ,perovskite nanocrystals ,Materials Science ,light-emitting diodes ,0205 Optical Physics ,lead-halide perovskites ,Materials Science, Multidisciplinary ,LEAD IODIDE PEROVSKITES ,HIGHLY EFFICIENT ,4016 Materials Engineering ,HIGH-EFFICIENCY ,0912 Materials Engineering ,40 Engineering ,3403 Macromolecular and Materials Chemistry ,Science & Technology ,34 Chemical Sciences ,mixed cation perovskites ,HYBRID PEROVSKITES ,Optics ,OPTICAL-PROPERTIES ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,ANION-EXCHANGE ,photovoltaics ,OPEN-CIRCUIT VOLTAGE ,0906 Electrical and Electronic Engineering ,TILTED-OCTAHEDRA ,Physical Sciences ,3406 Physical Chemistry ,2307 Química Física ,PHASE-TRANSITIONS - Abstract
Funder: Helmholtz Young Investigator Group Frontrunner, Over the past few years, lead‐halide perovskites (LHPs), both in the form of bulk thin films and colloidal nanocrystals (NCs), have revolutionized the field of optoelectronics, emerging at the forefront of next‐generation optoelectronics. The power conversion efficiency (PCE) of halide perovskite solar cells has increased from 3.8% to over 25.7% over a short period of time and is very close to the theoretical limit (33.7%). At the same time, the external quantum efficiency (EQE) of perovskite LEDs has surpassed 23% and 20% for green and red emitters, respectively. Despite great progress in device efficiencies, the photoactive phase instability of perovskites is one of the major concerns for the long‐term stability of the devices and is limiting their transition to commercialization. In this regard, researchers have found that the phase stability of LHPs and the reproducibility of the device performance can be improved by A‐site cation alloying with two or more species, these are named mixed cation (double, triple, or quadruple) perovskites. This review provides a state‐of‐the‐art overview of different types of mixed A‐site cation bulk perovskite thin films and colloidal NCs reported in the literature, along with a discussion of their synthesis, properties, and progress in solar cells and LEDs.
- Published
- 2022