硅基半导体纳米颗粒固体薄膜的可调谐光电性质研究

项目名称： 硅基半导体纳米颗粒固体薄膜的可调谐光电性质研究

项目编号： No.51302136

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 王静

作者单位： 南京邮电大学

项目金额： 25万元

中文摘要： 基于硅基半导体材料优异的物理和化学性能，用低维硅基纳米材料结合半导体加工工艺构筑器件，可为Si基微纳器件和纳米电路打下基础，对电子器件微观化、多功能化有重大意义。在光电子学、生物医药方面，Si基纳米材料也展示了广阔的前景。因而具有量子限制效应的Si基半导体纳米发光材料的研究十分活跃，近年来报导了很多工作，却从未成功制备在可见光波段有连续可调谐电致发光的Si基半导体量子点固体薄膜。这一难题也阻碍了对Si基量子点发光特性的应用。在前期工作基础上我们将首次制备具有基于量子限制效应、可调谐蓝光发射的Si量子点；分析表面物理和化学环境对发光特性的影响，用原子基团钝化量子点表面，有望第一次获取蓝-绿光波段连续可调谐发光的Si量子点固体薄膜；在此基础上改善Si和SiC量子点固体薄膜的荧光效率和电学性能，探索硅基量子点固体薄膜的电致发光机理，首次实现硅基量子点固体薄膜的连续可调谐电致发光，拓展下游应用研究

中文关键词： 硅；量子点；量子限制效应；可调；光致发光

英文摘要： Based on complex characters of Silicon based semiconductor materials, building nano devices or nano circuits with low demensional silicon based nano-materials can greatly help the microcosmicalizing and multifunctionalizing of microelectronic devices. Silicon based nanomaterials also show us a wide,potential prospect on photoelectronics and bio-electronics. In result, there appears a varies of researches which focus on silicon based nanomaterials with photoluminescence originating from quantum confinement effect. Although there are so many reports, people never succeed in fabricating silicon based nanocrystals solid films with a continuous, tunable electroluminescence in visible range, which blocks applications of Si-based semiconductor luminescent nanocrystals. Building on our previous works, in this work we will fabricate quantum Si nanocrystals with tunable photoluminescence in blue range, originating from quantum confinement effect, which never be producted before. For the next step, the influences on luminescent characters of physics and chemical environments around the Si nanocrystals will be completely analysed, which can help the researches about passivation the surfaces of nanocrystals with appropriate groups. After this part, it is highly prospective that a Si-nanocrystal solid film will be fabricate

英文关键词： silicon；quantum-dots；quantum confinement effect；tunable；photoluminescence