ZnO-Paper Based Photoconductive UV Sensor

被引：138

作者：

Gimenez, Alejandro J. ^{[1
,3
]}

Yanez-Limon, J. M. ^{[3
]}

Seminario, Jorge M. ^{[1
,2
]}

机构：

[1] Texas A&M Univ, Dept Chem Engn, College Stn, TX 77843 USA

[2] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX USA

[3] Inst Politecn Nacl, Unidad Queretaro, Ctr Invest & Estudios Avanzados, Queretaro, Mexico

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 01期

基金：

美国国家科学基金会;

关键词：

DENSITY-FUNCTIONAL THERMOCHEMISTRY; ZINC-OXIDE; DEVICES; HYDROGEN;

D O I：

10.1021/jp107812w

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We build sensors, capable of detecting and measuring ultraviolet (UV) light, by depositing zinc oxide (ZnO) powder from a solvent suspension over common white paper. Although these sensors are easy to fabricate and require inexpensive materials, they feature characteristics similar to those of UV sensors made with complex and expensive procedures. The good performance in terms of conductivity change of our simple devices can be attributed to the conductivity and porosity properties of paper, which effectively binds the ZnO crystals. We perform analyses using quantum chemistry methods to describe possible mechanisms that explain the conductivity changes observed on the ZnO surface due to doping interactions with interstitial hydrogen and doping depletion caused by oxygen adsorption.

引用

页码：282 / 287

页数：6

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