Persistent photoconductivity due to trapping of induced charges in Sn/ZnO thin film based UV photodetector

2010 ◽  
Vol 96 (22) ◽  
pp. 223507 ◽  
Author(s):  
Harish Kumar Yadav ◽  
K. Sreenivas ◽  
Vinay Gupta
Keyword(s):  
Thin Film ◽  
Zno Thin Film ◽  
Persistent Photoconductivity ◽  
Uv Photodetector

Reduction of persistent photoconductivity in ZnO thin film transistor-based UV photodetector

2012 ◽  
Vol 101 (3) ◽  
pp. 031118 ◽  
Author(s):  
Pavel Ivanoff Reyes ◽  
Chieh-Jen Ku ◽  
Ziqing Duan ◽  
Yi Xu ◽  
Eric Garfunkel ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Film Transistor ◽  
Zno Thin Film ◽  
Persistent Photoconductivity ◽  
Uv Photodetector

Sol–gel derived Ag-doped ZnO thin film for UV photodetector with enhanced response

2013 ◽  
Vol 48 (22) ◽  
pp. 7994-8002 ◽  
Author(s):  
Akshta Rajan ◽  
Harish Kumar Yadav ◽  
Vinay Gupta ◽  
Monika Tomar
Keyword(s):  
Thin Film ◽  
Sol Gel ◽  
Zno Thin Film ◽  
Uv Photodetector ◽  
Doped Zno

Copper Doped ZnO Thin Film for Ultraviolet Photodetector with Enhanced Photosensitivity

2013 ◽  
Vol 1494 ◽  
pp. 43-49 ◽  
Author(s):  
Akshta Rajan ◽  
Kashima Arora ◽  
Harish Kumar Yadav ◽  
Vinay Gupta ◽  
Monika Tomar
Keyword(s):  
Thin Film ◽  
Sol Gel ◽  
High Porosity ◽  
Zno Thin Film ◽  
X Ray Diffraction ◽  
Uv Photodetector ◽  
Response Characteristics ◽  
Uv Illumination ◽  
Photogenerated Electrons ◽  
Doped Zno

ABSTRACTUltraviolet photoconductivity in Copper doped ZnO (Cu:ZnO) thin films synthesized by sol-gel technique is investigated. Response characteristics of Pure ZnO thin film and Cu:ZnO thin film UV photodetector with 1.3 at. wt % Cu doping biased at 5 V for UV radiation of λ = 365 nm and intensity = 24 µwatt/cm2 has been studied. Cu:ZnO UV photodetector is found to exhibit a high photocoductive gain (K = 1.5×104) with fast recovery (T90% = 23s) in comparison to pure ZnO thin film based photodetector (K = 4.9×101 and T90% = 41s). Cu2+ ions have been substituted in ZnO lattice which has been confirmed by X-ray diffraction (XRD) and Raman spectroscopy leading to lowering of dark current (Ioff ∼ 1.44 nA). Upon UV illumination, more electron hole pairs are generated in the photodetector due to the high porosity and roughness of the surface of the film which favours adsorption of more oxygen on the surface of the photodetector. The photogenerated holes recombined with the trapped electrons, increasing the concentration of photogenerated electrons in the conduction band enhancing the photocurrent (Ion ∼ 0.02 mA) of the Cu:ZnO photodetector.

Ti doped ZnO thin film based UV photodetector: Fabrication and characterization

2015 ◽  
Vol 624 ◽  
pp. 251-257 ◽  
Author(s):  
P.S. Shewale ◽  
N.K. Lee ◽  
S.H. Lee ◽  
K.Y. Kang ◽  
Y.S. Yu
Keyword(s):  
Thin Film ◽  
Zno Thin Film ◽  
Uv Photodetector ◽  
Doped Zno ◽  
Fabrication And Characterization

Multifunctional zinc oxide thin films for high-performance UV photodetectors and nitrogen dioxide gas sensors

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 25641-25650 ◽  
Author(s):  
S. K. Shaikh ◽  
V. V. Ganbavle ◽  
S. I. Inamdar ◽  
K. Y. Rajpure
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Zinc Oxide ◽  
Nitrogen Dioxide ◽  
Gas Sensor ◽  
Gas Sensors ◽  
High Performance ◽  
Zno Thin Film ◽  
Uv Photodetector ◽  
Uv Photodetectors

Multifunctional use of ZnO thin film as NO2 gas sensor and UV photodetector.

ZnO Thin Film Prepared by Simple Technique as UV-Photodetector

2011 ◽  
Author(s):  
Nadim Khalid Hassan ◽  
Kamal Mahir Sulieman ◽  
M. R. Hashim
Keyword(s):  
Thin Film ◽  
Simple Technique ◽  
Zno Thin Film ◽  
Uv Photodetector

Two-dimensional BN-doped ZnO thin-film deposition by a thermionic vacuum arc system

2020 ◽  
Vol 31 (9) ◽  
pp. 6948-6955
Author(s):  
Mustafa Özgür ◽  
Suat Pat ◽  
Reza Mohammadigharehbagh ◽  
Uğur Demirkol ◽  
Nihan Akkurt ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Vacuum Arc ◽  
Zno Thin Film ◽  
Two Dimensional ◽  
Doped Zno ◽  
Thermionic Vacuum Arc
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