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Achieving high sensitivity in hybrid photodetectors based on an organic single crystal and an inorganic nanocrystal array

Title
Achieving high sensitivity in hybrid photodetectors based on an organic single crystal and an inorganic nanocrystal array
Author(s)
정대성Kim, Yun-HiLee, Jong-Soo
Issued Date
2014-01
Citation
Nanotechnology, v.25, no.3
Type
Article
Author Keywords
photodetectororganic semiconductorsingle crystalnanocrystal
ISSN
0957-4484
Abstract
We demonstrate an approach to enhance the photosensitivity of an organic single-crystal photodetector by combining it with a nanocrystal (NC) array. A systematic study of the dependence of the photodetector performance on illumination wavelength and light power together with the charge carrier mobility reveals that charge separation at the single-crystal/CdSe NC interface and subsequent electron trapping in the CdSe NCs generates effective photoconductive gain by hole circulation through the high-mobility single crystal. As a result, the responsivity and specific detectivity reached values up to 50 A W-1 and 2 × 109 cm Hz1/2 W-1, respectively. © 2014 IOP Publishing Ltd.
URI
http://hdl.handle.net/20.500.11750/2672
DOI
10.1088/0957-4484/25/3/035202
Publisher
Institute of Physics Publishing
Related Researcher
  • 이종수 Lee, Jong-Soo
  • Research Interests Design of new type of multifunctional nanoparticles for energy-related devices; 다기능성 나노재료; 무기물 태양전지; 열전소자
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Appears in Collections:
Department of Energy Science and Engineering Polymer Energy Materials Lab 1. Journal Articles
Department of Energy Science and Engineering MNEDL(Multifunctional Nanomaterials & Energy Devices Lab) 1. Journal Articles

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