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Enhanced performance of ZnO nanoparticle decorated all-inorganic CsPbBr <inf>3</inf> quantum dot photodetectors

Shen, K; Li, X; Xu, H; Wang, M; Dai, X; Guo, J; Zhang, T; ... Wu, J; + view all (2019) Enhanced performance of ZnO nanoparticle decorated all-inorganic CsPbBr <inf>3</inf> quantum dot photodetectors. Journal of Materials Chemistry A , 7 (11) pp. 6134-6142. 10.1039/c9ta00230h. Green open access

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Abstract

All-inorganic perovskite quantum dots have attracted substantial attention due to their excellent optical properties. However, the surface states of colloidal quantum dots and the insufficient carrier transport in a quantum dot film hinder their further development. Here, solution-processed CsPbBr3/ZnO quantum dot/nanoparticle nanocomposites are used to lessen the impact of surface states as well as facilitate charge transport. The blending of ZnO nanoparticles during CsPbBr3 quantum dot synthesis results in improved optical properties as well as film formation that enhances charge transport. A photodetector based on the CsPbBr3/ZnO/glassy-graphene heterostructure is fabricated, which exhibits an enhanced photoresponse and distinct self-powered operation with an open-circuit voltage as large as 150 mV. Most importantly, an excellent stability of the hybrid nanoparticle/quantum dot photodetector is reported and consistent high performance with marginal degradation is achieved for more than 7 months.

Type: Article
Title: Enhanced performance of ZnO nanoparticle decorated all-inorganic CsPbBr <inf>3</inf> quantum dot photodetectors
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/c9ta00230h
Publisher version: https://doi.org/10.1039/c9ta00230h
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 3.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery
URI: https://discovery.ucl.ac.uk/id/eprint/10070810
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