Open AccessEffect of Pt NPs in the film on the performances of ZnO-based metal-semiconductor-metal structured ultraviolet photodetector
Author(s) -
Pei Jia-Nan,
Dayong Jiang,
Tian Chun-Guang,
Guo Ze-Xuan,
Liu Ru-Sheng,
Sun Long,
Qin Jie-Ming,
侯建华 HOU Jian-hua,
Jianxun Zhao,
Qing-cheng Liang,
Shang Gao
Publication year - 2015
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.067802
Subject(s) - photodetector , responsivity , materials science , ultraviolet , optoelectronics , thin film , semiconductor , sputter deposition , nanoparticle , sputtering , substrate (aquarium) , nanotechnology , oceanography , geology
In this paper, by a radio frequency magnetron sputtering equipment, the ZnO/Pt nanoparticles/ZnO thin film structure is fabricated on a SiO2 substrate via three-step. And the metal-semiconductor-metal (MSM) structured ultraviolet (UV) photodetectors are built up. It is studied that the Pt nanoparticles in different depths of the layer of ZnO thin film affect the photoresponse performances of the MSM ultraviolet photodetector. The results show that the responsivity of the detector increases as Pt nanoparticles in ZnO thin film layers augment with the depth increasing. The responsivity of device is measured under 60 V bias, its photoresponse peak is at 365 nm, and the peak photoresponse is 1.4 A·W-1, which is enhanced by 7 times that of the photodetector without Pt NPs. Considering the performance analyses of ZnO films and the photodetectors, it is clear that the excellent performances of the detector with Pt NPs in the film can result from the scattering of Pt NPs.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom