Effect of Coated Platinum Thickness on Hydrogen Detection Sensitivity of Graphene-Based Sensors

被引：42

作者：

Chu, Byung Hwan ^{[1
]}

Nicolosi, Justin ^{[1
]}

Lo, C. F. ^{[1
]}

Strupinski, W. ^{[3
]}

Pearton, S. J. ^{[2
]}

Ren, F. ^{[1
]}

机构：

[1] Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA

[2] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

[3] Inst Elect Mat Technol, PL-01919 Warsaw, Poland

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2011年 / 14卷 / 07期

关键词：

ROOM-TEMPERATURE; GAS;

D O I：

10.1149/1.3589250

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effect of Pt metal thickness on the hydrogen sensing sensitivity of Pt-coated, multi-layered graphene grown by chemical vapor deposition on Si-polar 4H-SiC, was investigated. As-grown graphene samples and graphene samples coated with 1 or 4 nm thick Pt films were used in this study. Compared to graphene without platinum, significantly improved hydrogen detection sensitivity was observed with the addition of platinum films. The highest hydrogen sensitivity was observed with the graphene sensor with 1 nm platinum coating. The platinum coated graphene sensor also showed good selectivity for hydrogen detection over methane, ammonia, oxygen, and nitrogen oxide. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3589250] All rights reserved.

引用

页码：K43 / K45

页数：3