Chemical images generated by large area homogeneous illumination of metal-insulator-semiconductor structures

被引：14

作者：

Filippini, D ^{[1
]}

Lundström, I ^{[1
]}

机构：

[1] Linkoping Univ, Dept Phys & Measurement Technol, Div Appl Phys, S-58183 Linkoping, Sweden

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 21期

关键词：

D O I：

10.1063/1.1576505

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A controlled large area illumination, provided by a computer screen, is used to induce distinctive chemical images in field-effect devices upon gas exposure. The present measuring method uses the concurrent optical and chemical modulation of the semiconductor surface potential of a single metal-oxide-semiconductor capacitor to generate two-dimensional photocurrent images, displayed in a bias voltage-color space. Selective patterns for hydrogen, ammonia, and propene are demonstrated. The use of a computer screen as a programable light source allows to simplify a normally complex setup, making the technique more attractive for practical applications. (C) 2003 American Institute of Physics.

引用

页码：3791 / 3793

页数：3

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