Water resistant CsPbX3 nanocrystals coated with polyhedral oligomeric silsesquioxane and their use as solid state luminophores in all-perovskite white light-emitting devices

He Huang; Bingkun Chen; Zhenguang Wang; Tak Fu Hung; Andrei S. Susha; Haizheng Zhong; Andrey L. Rogach

doi:10.1039/c6sc01758d

Water resistant CsPbX₃ nanocrystals coated with polyhedral oligomeric silsesquioxane and their use as solid state luminophores in all-perovskite white light-emitting devices

He Huang, Bingkun Chen, Zhenguang Wang, Tak Fu Hung, Andrei S. Susha, Haizheng Zhong, Andrey L. Rogach^*

^*Corresponding author for this work

City University of Hong Kong

Research output: Contribution to journal › Article › peer-review

510 Citations (Scopus)

Abstract

We present an approach towards stable solid-state perovskite based luminophores with different emission colors via surface protection of CsPbX₃ (X = Br or I) with a polyhedral oligomeric silsesquioxane (POSS). This treatment results in water resistant perovskite nanocrystal powders, and prevents otherwise easy anion exchange between perovskite nanocrystals of different compositions mixed together in the solid state, which allows us to preserve their distinct emission spectra. We subsequently used mixtures of green-emitting POSS-CsPbBr₃ and red-emitting POSS-CsPb(Br/I)₃ nanocrystal powders to fabricate single layer all-perovskite down conversion white light-emitting devices.

Original language	English
Pages (from-to)	5699-5703
Number of pages	5
Journal	Chemical Science
Volume	7
Issue number	9
DOIs	https://doi.org/10.1039/c6sc01758d
Publication status	Published - 2016

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title = "Water resistant CsPbX3 nanocrystals coated with polyhedral oligomeric silsesquioxane and their use as solid state luminophores in all-perovskite white light-emitting devices",

abstract = "We present an approach towards stable solid-state perovskite based luminophores with different emission colors via surface protection of CsPbX3 (X = Br or I) with a polyhedral oligomeric silsesquioxane (POSS). This treatment results in water resistant perovskite nanocrystal powders, and prevents otherwise easy anion exchange between perovskite nanocrystals of different compositions mixed together in the solid state, which allows us to preserve their distinct emission spectra. We subsequently used mixtures of green-emitting POSS-CsPbBr3 and red-emitting POSS-CsPb(Br/I)3 nanocrystal powders to fabricate single layer all-perovskite down conversion white light-emitting devices.",

author = "He Huang and Bingkun Chen and Zhenguang Wang and Hung, {Tak Fu} and Susha, {Andrei S.} and Haizheng Zhong and Rogach, {Andrey L.}",

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year = "2016",

doi = "10.1039/c6sc01758d",

language = "English",

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T1 - Water resistant CsPbX3 nanocrystals coated with polyhedral oligomeric silsesquioxane and their use as solid state luminophores in all-perovskite white light-emitting devices

AU - Huang, He

AU - Chen, Bingkun

AU - Wang, Zhenguang

AU - Hung, Tak Fu

AU - Susha, Andrei S.

AU - Zhong, Haizheng

AU - Rogach, Andrey L.

PY - 2016

Y1 - 2016

N2 - We present an approach towards stable solid-state perovskite based luminophores with different emission colors via surface protection of CsPbX3 (X = Br or I) with a polyhedral oligomeric silsesquioxane (POSS). This treatment results in water resistant perovskite nanocrystal powders, and prevents otherwise easy anion exchange between perovskite nanocrystals of different compositions mixed together in the solid state, which allows us to preserve their distinct emission spectra. We subsequently used mixtures of green-emitting POSS-CsPbBr3 and red-emitting POSS-CsPb(Br/I)3 nanocrystal powders to fabricate single layer all-perovskite down conversion white light-emitting devices.

AB - We present an approach towards stable solid-state perovskite based luminophores with different emission colors via surface protection of CsPbX3 (X = Br or I) with a polyhedral oligomeric silsesquioxane (POSS). This treatment results in water resistant perovskite nanocrystal powders, and prevents otherwise easy anion exchange between perovskite nanocrystals of different compositions mixed together in the solid state, which allows us to preserve their distinct emission spectra. We subsequently used mixtures of green-emitting POSS-CsPbBr3 and red-emitting POSS-CsPb(Br/I)3 nanocrystal powders to fabricate single layer all-perovskite down conversion white light-emitting devices.

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DO - 10.1039/c6sc01758d

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AN - SCOPUS:84982702039

SN - 2041-6520

VL - 7

SP - 5699

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JO - Chemical Science

JF - Chemical Science

IS - 9

ER -

Water resistant CsPbX₃ nanocrystals coated with polyhedral oligomeric silsesquioxane and their use as solid state luminophores in all-perovskite white light-emitting devices

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