Flexible All-Inorganic Perovskite Photodetector with a Combined Soft-Hard Layer Produced by Ligand Cross-Linking
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 | 2302005 |
Journal / Publication | Advanced Science |
Volume | 10 |
Issue number | 22 |
Online published | 28 May 2023 |
Publication status | Published - 4 Aug 2023 |
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DOI | DOI |
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Attachment(s) | Documents
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85160232308&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(59a4b309-5a02-499a-b557-4bdb62755f98).html |
Abstract
Although perovskite nanocrystals have attracted considerable interests as emerging semiconductors in optoelectronic devices, design and fabrication of a deformable structure with high stability and flexibility while meeting the charge transport requirements remain a huge challenge. Herein, a combined soft-hard strategy is demonstrated to fabricate intrinsically flexible all-inorganic perovskite layers for photodetection via ligand cross-linking. Perfluorodecyltrichlorosilane (FDTS) is employed as the capping ligand and passivating agent bound to the CsPbBr3 surface via Pb-F and Br-F interactions. The Si Cl head groups of FDTS are hydrolyzed to produce SiOH groups which subsequently condense to form the Si O Si network. The CsPbBr3@FDTS nanocrystals (NCs) are monodispersed cubes with an average particle size of 13.03 nm and exhibit excellent optical stability. Furthermore, the residual hydroxyl groups on the surface of the CsPbBr3@FDTS render the NCs tightly packed and cross-linked to each other to form a dense and elastic CsPbBr3@FDTS film with soft and hard components. The photodetector based on the flexible CsPbBr3@FDTS film exhibits outstanding mechanical flexibility and robust stability after 5000 bending cycles. © 2023 The Authors. Advanced Science published by Wiley-VCH GmbH.
Research Area(s)
- all-inorganic perovskites, bendable, flexible photodetectors, ligands cross-linking, nanocrystals, soft-hard combination
Citation Format(s)
Flexible All-Inorganic Perovskite Photodetector with a Combined Soft-Hard Layer Produced by Ligand Cross-Linking. / Shi, Tongyu; Chen, Xi; He, Rui et al.
In: Advanced Science, Vol. 10, No. 22, 2302005, 04.08.2023.
In: Advanced Science, Vol. 10, No. 22, 2302005, 04.08.2023.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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