期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 11, 期 9, 页码 3271-3286出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.0c00018
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资金
- LANL LDRD program
- National Nuclear Security Administration of the U.S. Department of Energy [89233218NCA000001]
- Department of Navy's (DoN) HBCU/MI Program, ONR [N00014-19-S-F004]
Metal halide perovskites (MHPs) have rapidly emerged as leading contenders in photovoltaic technology and other optoelectronic applications owing to their outstanding optoelectronic properties. After a decade of intense research, an in-depth understanding of the charge carrier transport in MHPs is still an active topic of debate. In this Perspective, we discuss the current state of the field by summarizing the most extensively studied carrier transport mechanisms, such as electron-phonon scattering limited dynamics, ferroelectric effects, Rashba-type band splitting, and polaronic transport. We further extensively discuss the emerging experimental and computational evidence for dominant polaronic carrier dynamics in MHPs. Focusing on both small and large polarons, we explore the fundamental aspects of their motion through the lattice, protecting the photogenerated charge carriers from the recombination process. Finally, we outline different physical and chemical approaches considered recently to study and exploit the polaron transport in MHPs.
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