Water-Assisted Size and Shape Control of CsPbBr3 Perovskite Nanocrystals
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 3337-3342 |
Journal / Publication | Angewandte Chemie - International Edition |
Volume | 57 |
Issue number | 13 |
Online published | 5 Feb 2018 |
Publication status | Published - 19 Mar 2018 |
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Abstract
Lead-halide perovskites are well known to decompose rapidly when exposed to polar solvents, such as water. Contrary to this common-place observation, we have found that through introducing a suitable minor amount of water into the reaction mixture, we can synthesize stable CsPbBr3 nanocrystals. The size and the crystallinity, and as a result the band gap tunability of the strongly emitting CsPbBr3 nanocrystals correlate with the water content. Suitable amounts of water change the crystallization environment, inducing the formation of differently shaped perovskites, namely spherical NCs, rectangular nanoplatelets, or nanowires. Bright CsPbBr3 nanocrystals with the photoluminescence quantum yield reaching 90 % were employed for fabrication of inverted hybrid inorganic/organic light-emitting devices, with the peak luminance of 4428 cd m−2 and external quantum yield of 1.7 %.
Research Area(s)
- CsPbBr3, light-emitting device, perovskite nanocrystals, shape control, water additive
Citation Format(s)
Water-Assisted Size and Shape Control of CsPbBr3 Perovskite Nanocrystals. / Zhang, Xiaoyu; Bai, Xue; Wu, Hua et al.
In: Angewandte Chemie - International Edition, Vol. 57, No. 13, 19.03.2018, p. 3337-3342.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review