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PEDOT:PSS/Yb-Doped ZnO Heterojunction Based Flexible UV Photodetector.

Authors :
Dwivedi, Ajay Kumar
Tripathi, Saumya
Tripathi, Rishi
Jit, Satyabrata
Tripathi, Shweta
Source :
IEEE Photonics Technology Letters; 9/15/2022, Vol. 34 Issue 18, p949-952, 4p
Publication Year :
2022

Abstract

This letter proposes an organic-inorganic heterojunction structure based flexible Ultraviolet (UV) photodetector. The proposed structure consists of Al/PEDOT:PSS/ Yb doped ZnO (YZO)/Al structure fabricated by the low-cost spin coating method over a flexible PET substrate. At −2V voltage bias and 357 nm operating wavelength, the proposed structure gives the maximum responsivity of 0.33 A/W, sensitivity of 33.07, detectivity of 1.01 $\times \,\,{10}^{14}$ Jones, and external quantum efficiency of 113% (at $0.257~\mu \text{W}$ optical excitation). Further, the rise time of 70 ms and the fall time of 30 ms are obtained at 357 nm. The proposed photodetector thus shows an excellent performance in the UV region. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10411135
Volume :
34
Issue :
18
Database :
Complementary Index
Journal :
IEEE Photonics Technology Letters
Publication Type :
Academic Journal
Accession number :
158649304
Full Text :
https://doi.org/10.1109/LPT.2022.3195784