1. A review on advances in doping with alkali metals in halide perovskite materials
- Author
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Yongfeng Zhou, Michael J. Reece, Madeeha Tabassum, Qasim Zia, and Lei Su
- Subjects
Morphology ,Technology ,Materials science ,Alkali metals ,Passivation ,Science ,General Chemical Engineering ,General Physics and Astronomy ,Halide ,Characterization methods ,Doping ,General Materials Science ,Thermal stability ,General Environmental Science ,Perovskite (structure) ,Ion migration ,General Engineering ,Alkali metal ,Halide perovskites ,Chemical engineering ,General Earth and Planetary Sciences ,Defects ,Stability - Abstract
Recent progress in doping of halide perovskite materials (HPM) by using targeted elements has provided a dimension beyond structural and compositional modification, for achieving desired properties and resulting device performance. Herein doping of alkali metal ions (Li+, Na+, K+, Rb+, and Cs+) in three-dimensional HPM is reviewed to lay a particular focus on advances in synthesis, doping-induced changes in optical and electrical properties, and their optoelectronic applications. The introduction of alkali metals in HPM shows an effective route for improved morphology, suppressed ion migration, reduction in non-radiative recombination, passivation of bulk and interface defects, and increased thermal stability. In the end, we provide our perspective that the effect of alkali metal incorporation on the efficiency and stability of HPM should be further investigated via in-situ characterization methods and doped HPM should be considered for more functional applications. Graphical abstract
- Published
- 2021
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