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Article: Flexible and Self‐Powered Photodetector Arrays Based on All‐Inorganic CsPbBr3 Quantum Dots
Title | Flexible and Self‐Powered Photodetector Arrays Based on All‐Inorganic CsPbBr3 Quantum Dots |
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Authors | |
Keywords | flexible devices perovskites photodetector arrays self‐powered devices |
Issue Date | 2020 |
Publisher | Wiley - VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/publish/en/journals/alphabeticIndex/2089 |
Citation | Advanced Materials, 2020, v. 32 n. 22, p. article no. 2000004 How to Cite? |
Abstract | Flexible devices are garnering substantial interest owing to their potential for wearable and portable applications. Here, flexible and self‐powered photodetector arrays based on all‐inorganic perovskite quantum dots (QDs) are reported. CsBr/KBr‐mediated CsPbBr3 QDs possess improved surface morphology and crystallinity with reduced defect densities, in comparison with the pristine ones. Systematic material characterizations reveal enhanced carrier transport, photoluminescence efficiency, and carrier lifetime of the CsBr/KBr‐mediated CsPbBr3 QDs. Flexible photodetector arrays fabricated with an optimum CsBr/KBr treatment demonstrate a high open‐circuit voltage of 1.3 V, responsivity of 10.1 A W−1, specific detectivity of 9.35 × 1013 Jones, and on/off ratio up to ≈104. Particularly, such performance is achieved under the self‐powered operation mode. Furthermore, outstanding flexibility and electrical stability with negligible degradation after 1600 bending cycles (up to 60°) are demonstrated. More importantly, the flexible detector arrays exhibit uniform photoresponse distribution, which is of much significance for practical imaging systems, and thus promotes the practical deployment of perovskite products. |
Persistent Identifier | http://hdl.handle.net/10722/290123 |
ISSN | 2023 Impact Factor: 27.4 2023 SCImago Journal Rankings: 9.191 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Shen, K | - |
dc.contributor.author | Xu, H | - |
dc.contributor.author | Li, X | - |
dc.contributor.author | Guo, J | - |
dc.contributor.author | Sathasivam, S | - |
dc.contributor.author | Wang, M | - |
dc.contributor.author | Ren, A | - |
dc.contributor.author | Choy, K | - |
dc.contributor.author | Parkin, IP | - |
dc.contributor.author | Guo, Z | - |
dc.contributor.author | Wu, J | - |
dc.date.accessioned | 2020-10-22T08:22:25Z | - |
dc.date.available | 2020-10-22T08:22:25Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Advanced Materials, 2020, v. 32 n. 22, p. article no. 2000004 | - |
dc.identifier.issn | 0935-9648 | - |
dc.identifier.uri | http://hdl.handle.net/10722/290123 | - |
dc.description.abstract | Flexible devices are garnering substantial interest owing to their potential for wearable and portable applications. Here, flexible and self‐powered photodetector arrays based on all‐inorganic perovskite quantum dots (QDs) are reported. CsBr/KBr‐mediated CsPbBr3 QDs possess improved surface morphology and crystallinity with reduced defect densities, in comparison with the pristine ones. Systematic material characterizations reveal enhanced carrier transport, photoluminescence efficiency, and carrier lifetime of the CsBr/KBr‐mediated CsPbBr3 QDs. Flexible photodetector arrays fabricated with an optimum CsBr/KBr treatment demonstrate a high open‐circuit voltage of 1.3 V, responsivity of 10.1 A W−1, specific detectivity of 9.35 × 1013 Jones, and on/off ratio up to ≈104. Particularly, such performance is achieved under the self‐powered operation mode. Furthermore, outstanding flexibility and electrical stability with negligible degradation after 1600 bending cycles (up to 60°) are demonstrated. More importantly, the flexible detector arrays exhibit uniform photoresponse distribution, which is of much significance for practical imaging systems, and thus promotes the practical deployment of perovskite products. | - |
dc.language | eng | - |
dc.publisher | Wiley - VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/publish/en/journals/alphabeticIndex/2089 | - |
dc.relation.ispartof | Advanced Materials | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | flexible devices | - |
dc.subject | perovskites | - |
dc.subject | photodetector arrays | - |
dc.subject | self‐powered devices | - |
dc.title | Flexible and Self‐Powered Photodetector Arrays Based on All‐Inorganic CsPbBr3 Quantum Dots | - |
dc.type | Article | - |
dc.identifier.email | Guo, Z: zxguo@hku.hk | - |
dc.identifier.authority | Guo, Z=rp02451 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1002/adma.202000004 | - |
dc.identifier.pmid | 32319160 | - |
dc.identifier.scopus | eid_2-s2.0-85083701343 | - |
dc.identifier.hkuros | 317050 | - |
dc.identifier.volume | 32 | - |
dc.identifier.issue | 22 | - |
dc.identifier.spage | article no. 2000004 | - |
dc.identifier.epage | article no. 2000004 | - |
dc.identifier.isi | WOS:000527280900001 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 0935-9648 | - |