Ce4+ doping to modulate electrochemical and radiative-charge-transfer behaviors of CsPbBr3 perovskite nanocrystals
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Article number | 114546 |
Number of pages | 6 |
Journal / Publication | Journal of Electroanalytical Chemistry |
Volume | 876 |
Online published | 1 Aug 2020 |
Publication status | Published - 1 Nov 2020 |
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Abstract
Tunable morphology and radiative charge transfer of perovskite nanocrystals (PNCs) were achieved by heterovalently doping CsPbBr3 PNCs with Ce(IV) cation in a hot-injection and doping-in-growth combined way. Ce(IV)-doping could bring out a new tetragonal CsPb2Br5 phase within the PNCs, and transform cubic CsPbBr3 PNCs to Ce4+-doped CsPbBr3 PNCs with a dot-shaped morphology of smaller size. Ce4+-doped CsPbBr3 PNCs exhibited enhanced absorption and electrochemical oxidative response as well as decreased photoluminescence and electrochemiluminescence than parent CsPbBr3 PNCs. Processing Ce4+-doped CsPbBr3 PNCs with NH3•H2O could eliminate the effects of ionic Ce(IV) dopants via forming CeO2, and enable CsPbBr3-CeO2 hybrids to directionally grow to columnar-morphology with partially restored photoluminescence and electrochemiluminescence.
Research Area(s)
- CsPbBr perovskite nanocrystals, Ce(IV) cation, Heterovalently doping, Photoluminescence, Electrochemiluminescence
Citation Format(s)
Ce4+ doping to modulate electrochemical and radiative-charge-transfer behaviors of CsPbBr3 perovskite nanocrystals. / Fu, Li; Fu, Kena; Hsu, Hsien-Yi et al.
In: Journal of Electroanalytical Chemistry, Vol. 876, 114546, 01.11.2020.
In: Journal of Electroanalytical Chemistry, Vol. 876, 114546, 01.11.2020.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review