Effects of palladium on the optical and hydrogen sensing characteristics of Pd-doped ZnO nanoparticles

被引：48

作者：

Anh-Thu Thi Do ^{[1
]}

Hong Thai Giang ^{[1
]}

Thu Thi Do ^{[1
]}

Ngan Quang Pham ^{[1
]}

Giang Truong Ho ^{[1
]}

机构：

[1] Vietnam Acad Sci & Technol, Inst Mat Sci, Hanoi, Vietnam

来源：

BEILSTEIN JOURNAL OF NANOTECHNOLOGY | 2014年 / 5卷

关键词：

carrier dynamics; hydrogen sensing; Pd-doped ZnO; photoluminescence; sensor; NANOSTRUCTURES; INTERFACE;

D O I：

10.3762/bjnano.5.140

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of palladium doping of zinc oxide nanoparticles on the photoluminescence (PL) properties and hydrogen sensing characteristics of gas sensors is investigated. The PL intensity shows that the carrier dynamics coincides with the buildup of the Pd-related green emission. The comparison between the deep level emission and the gas sensing response characteristics allows us to suggest that the dissociation of hydrogen takes place at Pd-Zn-vacancies ([Pd (2+)(4d(9))]). The design of this sensor allows for a continuous monitoring in the range of 0-100% LEL H-2 concentration with high sensitivity and selectivity.

引用

页码：1261 / 1267

页数：7

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