III-N基半导体量子点玻璃的构筑及其非线性光学性质的研究

项目名称： III-N基半导体量子点玻璃的构筑及其非线性光学性质的研究

项目编号： No.51202166

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 无机非金属材料学科

项目作者： 杨昕宇

作者单位： 温州大学

项目金额： 27万元

中文摘要： III-N基半导体低维量子结构具有优异的非线性光学性能，玻璃则是一类重要的非线性光学候选材料。结合二者的优点，采用可行的方法在玻璃中构筑III-N基量子点低维结构，有理由相信所形成的量子点玻璃在非线性光学领域具有非常广阔的研究前景。为此，本项目将采用溶胶-凝胶法和熔融分相法分别结合气氛控制的方式实现III-N基半导体量子点在玻璃中的构筑；分析工艺过程中的各种影响因素，给出优化的工艺参数；表征该类量子点在玻璃中的微观结构，给出该类量子点结构在玻璃中的形成机理。在此基础上，测试该类玻璃中的各项非线性光学性能参数，并根据参数的优劣确定优化的工艺参数和典型的微结构特征，摸索出这类量子点玻璃形成的内在规律。最终，本项目将建立一个该类玻璃工艺过程、微结构特征、非线性光学性能参数之间的理论模型，并且给出适合该类玻璃在非线性光学领域研究的通用型框架，为这类玻璃材料在非线性光学器件领域的研究提供理论依据。

中文关键词： III族元素；量子点玻璃；溶胶-凝胶方法；气氛控制；结构性质

英文摘要： Low-dimension quantum structures of III-N-based semiconductors have the excellent nonlinear optical properties, but glass is one of the most important nonlinear optical candidate materials. Combining both of advatages, the low-demension quantum structures of III-N-based quantum dots are constructed in the glass using the methods available, and there is reson to believe that research of such glasses has wide foreground in the field of nonlinear optics. For this purpose, III-N-based semiconductor quantum dots constructed in the glasses will be realized by combining both sol-gel and melting-phase separating methods with atmosphere control, respectively; The various factors which effect on the technological process are analyzed, and the optimum process parameters are given; Microstructures of such quantum dots formed in the glasses are characterized, and the structure forming mechanism of the quantum dots is presented in the glasses. Based on the above analysis, the various nonlinear optical parameters are measured in the glasses. According to the best or worst of the nonlinear optical parameters, the optimum process parameters and the typical microstructure characterization are confirmed, and the inherent law of the quantum dot glasses formed is also revealed. Finally, this project is to establish a theoretical mod

英文关键词： Group III elements；Quantum dot glasses；Sol-gel method；Atmosphere control；Structural properties