AlGaN基量子结构材料及其大功率深紫外光源

项目名称： AlGaN基量子结构材料及其大功率深紫外光源

项目编号： No.U1405253

项目类型： 联合基金项目

立项/批准年度： 2015

项目学科： 管理科学

项目作者： 康俊勇

作者单位： 厦门大学

项目金额： 260万元

中文摘要： 为突破AlGaN基深紫外高效发光的瓶颈，本项目拟围绕AlGaN基量子结构材料中量子态、光子传播、Mg杂质行为以及界面成键等几方面深层次的关键科学问题，开展系统的研究：深入了解并掌握AlGaN基量子结构量子态调控规律，设计新型应变量子结构和低维光学腔结构，提高辐射复合效率；探明偏振发光机理，实现光子可调量子结构材料制备；掌握局域表面等离子激元的光传播方向调控规律，实现光传播方向转换，提高深紫外光沿c轴方向出射比例；研究Mg杂质行为和激活特性，发展有效提高Mg杂质溶解度的新型掺杂技术，设计新型p型量子结构，改善空穴激活效率，提高器件的载流子注入效率；研究石墨烯、金属电极与AlGaN表面的电子传输特性，降低大功率深紫外LED电压降。在此基础上，研制出大功率AlGaN基深紫外光源器件。

中文关键词： AlGaN深紫外发光；量子效率；P型掺杂；光子调控

英文摘要： In order to break the bottleneck of high deep-UV emission efficiency in AlGaN-based devices, the project intend to study several critical issues focused on quantized states, optical transport, behaviors of Mg dopant, interfaced bonding and so forth in AlGaN-based quantum materials. Within the project, the fundamental physics and modulation methods of AlGaN-based quantum structures will be explore, and also the novel strained-quantum structure and low-dimensional optical cavity will be designed for improving radiative efficiency. The research will probe the principles of polarized-light emission and fabricate the tunable optical quantum materials. The fundamental physics of local surface plasmon transport will be studied, providing a new approach of altering light propagation in order to increase the proportion of light emission along c-axis. Apart from these, the project will study the behaviors of Mg dopant and activation properties in p-type AlGaN. We aim at develop new techniques for improving the concentration of Mg-acceptor, as well as the novel p-type quantum structures. We also plan to study the electron transport properties between AlGaN and graphene or metal combined electrode which will be proposed to lower the operation voltage of high-power ultra-violet light emission diodes. Based on the studies above, this project will achieve the fabrication of high-power AlGaN-based ultra-violet light emission devices.

英文关键词： Deep-UV emission of AlGaN;Quantum effiency;P-type doping;Modification of photon