Polymer-nanocrystal hybrid photodetectors with planar heterojunctions designed strategically to yield a high photoconductive gain
SCIE
SCOPUS
- Title
- Polymer-nanocrystal hybrid photodetectors with planar heterojunctions designed strategically to yield a high photoconductive gain
- Authors
- An, TK; Park, CE; Chung, DS
- Date Issued
- 2013-05-13
- Publisher
- AMER INST PHYSICS
- Abstract
- We demonstrate an approach to enhancing the photoresponsivity of a polymer photodetector (PPD). Both conventional bulk heterojunction (BHJ) and planar heterojunction (PHJ) PPDs were fabricated considering that the interface between a CdSe nanocrystal and a polymer can create photoconductive gain. A systematic study of the illumination wavelength and light power dependence of the photocurrent gain, combined with the charge carrier transport analysis, suggested that the PHJ-PPD could yield a higher hole mobility than could be achieved in a BHJ-PPD without compromising on the selective electron trapping effects. The optimized PHJ-PPD led to a photoconductive detectivity of 1.3 x 10(10) cm Hz(1/2)/W. (C) 2013 AIP Publishing LLC.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/9774
- DOI
- 10.1063/1.4807422
- ISSN
- 0003-6951
- Article Type
- Article
- Citation
- APPLIED PHYSICS LETTERS, vol. 102, no. 19, 2013-05-13
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