Perovskite-Gold Nanorod Hybrid Photodetector with High Responsivity and Low Driving Voltage
- 주제(키워드) high responsivity , low driving voltage , perovskite-gold nanorod hybrid , vertically structured photoconductive photodetectors
- 주제(기타) Materials Science, Multidisciplinary; Optics
- 설명문(일반) [Wang, Huan; Lim, Ju Won; Chung, Kyungwha; Jang, Yu Jin; Kim, Dong Ha] Ewha Womans Univ, Dept Chem & Nano Sci, 52 Ewhayeodae Gil, Seoul 03760, South Korea; [Wang, Huan; Ma, Yuguang] South China Univ Technol, State Key Lab Luminescent Mat & Devices, 381 Wushan Rd, Guangzhou 510640, Guangdong, Peoples R China; [Quan, Li Na] Univ Toronto, Dept Elect & Comp Engn, 10 Kings Coll Rd, Toronto, ON M5S 3G4, Canada
- 등재 SCIE, SCOPUS
- 발행기관 WILEY-V C H VERLAG GMBH
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000151616
- 본문언어 영어
- Published As http://dx.doi.org/10.1002/adom.201701397
초록/요약
The optical and electronic properties of noble metallic nanoparticles can be exploited to enhance the performance of inorganic/organic photodetectors. In this work, a uniformly distributed layer of Au nanorods (AuNRs) is integrated into vertically structured perovskite photoconductive photodetectors and, as a result, perovskite-AuNR hybrid photodetectors that exhibit significant photocurrent enhancements are reported. Ultimately it achieves a responsivity of approximate to 320 A W-1 at a low driving voltage of -1 V. This is an improvement of 60% compared to the responsivity of pristine devices (approximate to 200 A W-1). The high responsivity and low driving voltage place this device among the highest performing perovskite-based thin-film photoconductive photodetectors reported. The stability and linearity of the photoresponse following repeated light/dark cycles are characterized. The hybrid device also shows a fast response (with the decay time of approximate to 95 ns) compared to pristine devices (approximate to 230 ns). The improvements in photodetection performance are attributed to plasmon-enhanced optical absorption, as well as advances in charge extraction and transport.
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