OPTICAL CO DETECTION BY USE OF CUO/AU COMPOSITE FILMS

被引：45

作者：

ANDO, M ^{[1
]}

KOBAYASHI, T ^{[1
]}

HARUTA, M ^{[1
]}

机构：

[1] AIST, OSAKA NAT RES INST, IKEDA, OSAKA 563, JAPAN

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1995年 / 25卷 / 1-3期

关键词：

CARBON MONOXIDE SENSORS; COPPER OXIDE; GOLD; OPTICAL SENSORS;

D O I：

10.1016/0925-4005(95)85187-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Composite films consisting of a thin CuO layer and ultrafine Au particles have been found to be usable for the optical detection of CO in air. The optical absorption of CuO/Au composite films increases due to CO and recovers reversibly in air free of CO. The largest absorbance change due to CO is in the 700-800 nm wavelength region, with the absorbance change enhanced by increasing temperature or increasing CO concentration. We assume that the absorbance change of the CuO/Au film occurs due to the change in the electronic structure of the ultrafine Au particles as a result of their interactions with atmospheric gas.

引用

页码：851 / 853

页数：3

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