过渡金属双掺杂白光量子点的可控制备及LED应用

项目名称： 过渡金属双掺杂白光量子点的可控制备及LED应用

项目编号： No.21461006

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 无机化学

项目作者： 曾若生

作者单位： 桂林电子科技大学

项目金额： 45万元

中文摘要： 开发新型发光材料、制备高效白光LED对我国节能减排具有重要意义。本项目拟围绕过渡金属（Mn/Cu）双掺杂白光量子点的可控制备及发光性能研究开展工作，获得有实用价值的量子点白光LED。合成Mn/Cu双掺杂ZnSe和ZnInS等量子点，理解掺杂离子的位置、浓度和迁移速率与量子点的发光效率和发光光谱之间的关系，发展高效发光的白光双掺杂量子点制备技术；力图从微观尺度上理解掺杂发生的基本化学与物理过程，并从能带工程角度理解如何改变两种杂质离子之间的距离和调节它们之间的相互作用，实现两种掺杂离子分立发光；通过调控量子点的发光性质，获得高光效的白光量子点LED。上述关键问题的研究，可为量子点白光LED的实际应用提供材料基础和实验指导。

中文关键词： 过渡金属；白光；双掺杂；量子点；白光LED

英文摘要： Development of novel luminescent materials and preparation of efficient white LED has important implications for the energy conservation of our country. The project intends to focus on controlled synthesis and luminescent properties of transition metals (Mn/Cu) dual doped quantum dots (QDs) with white light emitting, and achieve white QD-LED with practical value. We try to fabricate Mn/Cu-doped ZnSe and ZnInS QDs, understand the relationship between the doping position, doping concentration and migration rate of the dopants and the luminous efficiency and emission spectrum, and develop synthetic methods of highly emissive white light doped QDs. We also try to understand the elementary chemical and physical processes of doping occurring from the micro scale, and from the bandgap engineering perspective understand how to change the distance between the two kinds of dopant ions and regulate their interaction, and achieve the independent emitting of two kinds of dopant ions. Highly luminous efficiency white QD-LED can be achieved by controlling the luminescent properties of QDs. Researches on these key issues will provide materials basis and experimental guidance for practical applications of white QD-LED.

英文关键词： transition metal;white light;dual-doped;quantum dots;white LED