Responsivity enhancement of ZnO/Pt/MgZnO/SiO2 and MgZnO/Pt/ZnO/SiO2 structured ultraviolet detectors by surface plasmons in Pt nanoparticles

The structured (ZnO/Pt/MgZnO/SiO2) ultraviolet detector was fabricated and demonstrated to investigate how metallic nanoparticles localized surface plasmons contribute when the two different dielectrics surrounded simultaneously. After sandwiching the Pt nanoparticles between the double layers of Mg...

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Bibliographic Details
Published in:Journal of applied physics 2016-01, Vol.119 (4)
Main Authors: Sun, Long, Jiang, Dayong, Zhang, Guoyu, Liu, Rusheng, Duan, Qian, Qin, Jieming, Liang, Qingcheng, Gao, Shang, Hou, Janhua, Zhao, Jianxun, Liu, Wanqiang, Shen, Xiande
Format: Article
Language:English
Subjects:
Applied physics
Dependence
Nanoparticles
Optoelectronic devices
Plasmons
Platinum
Silicon dioxide
Ultraviolet detectors
Zinc oxide
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Summary:The structured (ZnO/Pt/MgZnO/SiO2) ultraviolet detector was fabricated and demonstrated to investigate how metallic nanoparticles localized surface plasmons contribute when the two different dielectrics surrounded simultaneously. After sandwiching the Pt nanoparticles between the double layers of MgZnO and ZnO, the extinction was increased largely. Meanwhile, by examining the dependence of MgZnO and ZnO peak responsivity enhancement ratio, we found that MgZnO was significantly larger than ZnO. The interpretation by considering is that the localized surface plasmons of energy match with MgZnO which is superior to ZnO. In order to validate this conclusion and make it more accurate, we also fabricated the MgZnO/Pt/ZnO/SiO2 structure. Our work suggests that rational integration of double-layer and metal nanoparticles is a viable approach to perceive localized surface plasmons with double-layer ultraviolet detectors, which may help to advance optoelectronic devices.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4940736