Schottky junctions on perovskite single crystals: light-modulated dielectric constant and self-biased photodetection

Handle URI:
http://hdl.handle.net/10754/622461
Title:
Schottky junctions on perovskite single crystals: light-modulated dielectric constant and self-biased photodetection
Authors:
Shaikh, Parvez Abdul Ajij ( 0000-0002-4389-2286 ) ; Shi, Dong ( 0000-0003-4009-2686 ) ; Duran Retamal, Jose Ramon; Sheikh, Arif D. ( 0000-0003-3823-0947 ) ; Haque, Mohammed; Kang, Chen-Fang; He, Jr-Hau ( 0000-0003-1886-9241 ) ; Bakr, Osman M. ( 0000-0002-3428-1002 ) ; Wu, Tao ( 0000-0003-0845-4827 )
Abstract:
Schottky junctions formed between semiconductors and metal contacts are ubiquitous in modern electronic and optoelectronic devices. Here we report on the physical properties of Schottky-junctions formed on hybrid perovskite CH3NH3PbBr3 single crystals. It is found that light illumination can significantly increase the dielectric constant of perovskite junctions by 2300%. Furthermore, such Pt/perovskite junctions are used to fabricate self-biased photodetectors. A photodetectivity of 1.4 × 1010 Jones is obtained at zero bias, which increases to 7.1 × 1011 Jones at a bias of +3 V, and the photodetectivity remains almost constant in a wide range of light intensity. These devices also exhibit fast responses with a rising time of 70 μs and a falling time of 150 μs. As a result of the high crystal quality and low defect density, such single-crystal photodetectors show stable performance after storage in air for over 45 days. Our results suggest that hybrid perovskite single crystals provide a new platform to develop promising optoelectronic applications. © 2016 The Royal Society of Chemistry.
KAUST Department:
Materials Science and Engineering Program; Solar and Photovoltaic Engineering Research Center (SPERC); Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Shaikh PA, Shi D, Retamal JRD, Sheikh AD, Haque MA, et al. (2016) Schottky junctions on perovskite single crystals: light-modulated dielectric constant and self-biased photodetection. J Mater Chem C 4: 8304–8312. Available: http://dx.doi.org/10.1039/c6tc02828d.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
J. Mater. Chem. C
Issue Date:
16-Aug-2016
DOI:
10.1039/c6tc02828d
Type:
Article
ISSN:
2050-7526; 2050-7534
Sponsors:
The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://pubs.rsc.org/en/Content/ArticleLanding/2016/TC/C6TC02828D
Appears in Collections:
Articles; Materials Science and Engineering Program; Solar and Photovoltaic Engineering Research Center (SPERC); Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorShaikh, Parvez Abdul Ajijen
dc.contributor.authorShi, Dongen
dc.contributor.authorDuran Retamal, Jose Ramonen
dc.contributor.authorSheikh, Arif D.en
dc.contributor.authorHaque, Mohammeden
dc.contributor.authorKang, Chen-Fangen
dc.contributor.authorHe, Jr-Hauen
dc.contributor.authorBakr, Osman M.en
dc.contributor.authorWu, Taoen
dc.date.accessioned2017-01-02T09:28:32Z-
dc.date.available2017-01-02T09:28:32Z-
dc.date.issued2016-08-16en
dc.identifier.citationShaikh PA, Shi D, Retamal JRD, Sheikh AD, Haque MA, et al. (2016) Schottky junctions on perovskite single crystals: light-modulated dielectric constant and self-biased photodetection. J Mater Chem C 4: 8304–8312. Available: http://dx.doi.org/10.1039/c6tc02828d.en
dc.identifier.issn2050-7526en
dc.identifier.issn2050-7534en
dc.identifier.doi10.1039/c6tc02828den
dc.identifier.urihttp://hdl.handle.net/10754/622461-
dc.description.abstractSchottky junctions formed between semiconductors and metal contacts are ubiquitous in modern electronic and optoelectronic devices. Here we report on the physical properties of Schottky-junctions formed on hybrid perovskite CH3NH3PbBr3 single crystals. It is found that light illumination can significantly increase the dielectric constant of perovskite junctions by 2300%. Furthermore, such Pt/perovskite junctions are used to fabricate self-biased photodetectors. A photodetectivity of 1.4 × 1010 Jones is obtained at zero bias, which increases to 7.1 × 1011 Jones at a bias of +3 V, and the photodetectivity remains almost constant in a wide range of light intensity. These devices also exhibit fast responses with a rising time of 70 μs and a falling time of 150 μs. As a result of the high crystal quality and low defect density, such single-crystal photodetectors show stable performance after storage in air for over 45 days. Our results suggest that hybrid perovskite single crystals provide a new platform to develop promising optoelectronic applications. © 2016 The Royal Society of Chemistry.en
dc.description.sponsorshipThe research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2016/TC/C6TC02828Den
dc.titleSchottky junctions on perovskite single crystals: light-modulated dielectric constant and self-biased photodetectionen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalJ. Mater. Chem. Cen
kaust.authorShaikh, Parvez Abdul Ajijen
kaust.authorShi, Dongen
kaust.authorDuran Retamal, Jose Ramonen
kaust.authorSheikh, Arif D.en
kaust.authorHaque, Mohammeden
kaust.authorKang, Chen-Fangen
kaust.authorHe, Jr-Hauen
kaust.authorBakr, Osman M.en
kaust.authorWu, Taoen
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