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Keywords = CdTe microdots

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13 pages, 4480 KB  
Article
Arrayed CdTeMicrodots and Their Enhanced Photodetectivity via Piezo-Phototronic Effect
by Dong Jin Lee, G. Mohan Kumar, P. Ilanchezhiyan, Fu Xiao, Sh.U. Yuldashev, Yong Deuk Woo, Deuk Young Kim and Tae Won Kang
Nanomaterials 2019, 9(2), 178; https://doi.org/10.3390/nano9020178 - 1 Feb 2019
Cited by 8 | Viewed by 3402
Abstract
In this paper, a photodetector based on arrayed CdTe microdots was fabricated on Bi coated transparent conducting indium tin oxide (ITO)/glass substrates. Current-voltage characteristics of these photodetectors revealed an ultrahigh sensitivity under stress (in the form of force through press) while compared to [...] Read more.
In this paper, a photodetector based on arrayed CdTe microdots was fabricated on Bi coated transparent conducting indium tin oxide (ITO)/glass substrates. Current-voltage characteristics of these photodetectors revealed an ultrahigh sensitivity under stress (in the form of force through press) while compared to normal condition. The devices exhibited excellent photosensing properties with photoinduced current increasing from 20 to 76 μA cm−2 under stress. Furthermore, the photoresponsivity of the devices also increased under stress from 3.2 × 10−4 A/W to 5.5 × 10−3 A/W at a bias of 5 V. The observed characteristics are attributed to the piezopotential induced change in Schottky barrier height, which actually results from the piezo-phototronic effect. The obtained results also demonstrate the feasibility in realization of a facile and promising CdTe microdots-based photodetector via piezo-phototronic effect. Full article
(This article belongs to the Special Issue Optoelectronic Nanodevices)
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