TY - JOUR
T1 - Self-Purification Affecting the Optical Performance of Mn-Doped Halide Perovskite Nanocrystals
AU - Sun, Zhiguo
AU - Wu, Ye
AU - Chen, Hongliang
AU - Wu, Xiaoyun
AU - Zhou, Yanmei
AU - Han, Shigang
AU - Luo, Yan
AU - Zeng, Haibo
PY - 2024/6
Y1 - 2024/6
N2 - Component doping is the fundamental topic for modulating the properties of semiconductor materials. The introduction of doping ions into lead halide perovskites (LHPs) can not only maintain the excellent photoelectric properties but also enhance the stability of LHPs in open air and thermal environments. However, due to the “self-purification” effect in crystallography, there is an inherent trend to pop doping ions out of LHPs lattice. In this work, it is confirmed that in Mn2+ doped LHPs nanocrystals (NCs) the discharge of Mn2+ will be accelerated at higher temperatures. It is also proved that even at room temperature, the dopants in LHPs NCs will also actively “migrate”, resulting in declined optical performance. Therefore, for cation alloying/doping LHPs NCs, the migration of doping ions in the material should be considered in addition to the intrinsic halide migration characteristics. This work will provide a benign reference for application of doped LHPs NCs. © 2024 Wiley-VCH GmbH.
AB - Component doping is the fundamental topic for modulating the properties of semiconductor materials. The introduction of doping ions into lead halide perovskites (LHPs) can not only maintain the excellent photoelectric properties but also enhance the stability of LHPs in open air and thermal environments. However, due to the “self-purification” effect in crystallography, there is an inherent trend to pop doping ions out of LHPs lattice. In this work, it is confirmed that in Mn2+ doped LHPs nanocrystals (NCs) the discharge of Mn2+ will be accelerated at higher temperatures. It is also proved that even at room temperature, the dopants in LHPs NCs will also actively “migrate”, resulting in declined optical performance. Therefore, for cation alloying/doping LHPs NCs, the migration of doping ions in the material should be considered in addition to the intrinsic halide migration characteristics. This work will provide a benign reference for application of doped LHPs NCs. © 2024 Wiley-VCH GmbH.
KW - doping
KW - halide perovskite
KW - ion migration
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85183420944&origin=recordpage
U2 - 10.1002/ppsc.202300167
DO - 10.1002/ppsc.202300167
M3 - RGC 21 - Publication in refereed journal
SN - 0934-0866
VL - 41
JO - Particle and Particle Systems Characterization
JF - Particle and Particle Systems Characterization
IS - 6
M1 - 2300167
ER -