论文总字数：21218字

摘 要

随着纳米科学、光电子学以及超分子化学等学科的蓬勃发展，光致变色材料在信息显示、传感器、超高密度光信息存储及防伪辨伪等许多方面展现出巨大的应用前景。三氧化钼（MoO₃）是一种多功能半导体材料，因其有独特的二维结构、优异的光学和电学性质得到了越来越多的关注，有望成为制备高迁移率场效应晶体管、光信息存储器和光记录器件的候选材料。

本文采用真空热蒸发方法在玻璃衬底上沉积三氧化钼薄膜，系统地研究了沉积室内气压对在MoO₃薄膜的结构性质和光学性质的影响。重点对MoO₃薄膜的光致变色性能进行了研究。

关键字：三氧化钼，热蒸发，光致变色

Abstract

With the rapid developments of nano-science, optoelectronics, supramolecular chemistry and so on, the photochromic materials have promising applications in information display, sensor, super high density optical data storage and security detection of forgeries, etc. Molybdenum trioxide (MoO₃) is a new versatile semiconductor material which has attracted much attention for its unique two-dimensional structure, excellent optical and electrical properties. It is expected to be candidate materials for preparing high mobility field effect transistors, optical information storage and optical recording devices.

In this work, a series of MoO₃ thin films were deposited on glass substrates by thermal evaporation technology. The gas pressure dependent structural and optical properties of MoO₃ thin films were studied systematically. Especially, the photochromic property of MoO₃ thin films.

Key words: molybdenum trioxide; thermal evaporation; photochromism

目 录

中文摘要..........................................................................................................................................I

英文摘要.........................................................................................................................................II

1 绪论 .........................................................................................................................................1

1.1 引言 ................................................................................................................................. 1

1.2 三氧化钼的结构................................................................................................................2

1.3 光致变色机理及应用........................................................................................................4

1.3.1 光致变色机理...........................................................................................................5

1.3.2 光致变色的应用前景...............................................................................................6

1.4 课题选题的目的和研究内容............................................................................................7

2 三氧化钼薄膜的制备...............................................................................................................8

2.1 三氧化钼薄膜的制备技术及优缺点................................................................................8

2.1.1 真空蒸镀法...............................................................................................................8

2.1.2 溅射法.......................................................................................................................8

2.1.3 溶胶-凝胶法..............................................................................................................8

2.1.4 电化学沉积法...........................................................................................................9

2.2 真空蒸镀法简介................................................................................................................9

2.2.1真空蒸发镀膜法概述................................................................................................9

2.2.2 真空蒸发镀膜法原理...............................................................................................9

2.3 三氧化钼薄膜的制备.......................................................................................................11

2.3.1 实验仪器..................................................................................................................11

2.3.2 实验步骤.................................................................................................................12

2.4 小结..................................................................................................................................13

3 三氧化钼薄膜的分析.............................................................................................................14

3.1 物体微结构 X 射线衍射测定........................................................................................14

3.2 光致变色现象和透光率的测定......................................................................................16

3.3 小结..................................................................................................................................18

4 结论.........................................................................................................................................19

参考文献.......................................................................................................................................20

致谢...............................................................................................................................................22

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