Light-matter ineraction in optically doped nanowire LEDs and nano lasers

光学掺杂纳米线 LED 和纳米激光器中的光与物质相互作用

• 批准号: 213563144
• 负责人: Professor Dr. Carsten Ronning
• 金额: --
• 依托单位: Arbeitsgruppe Experimentelle Festkörperphysik
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/213563144?language=en
• 关键词: Light; matter; ineraction; optically; doped

Lasing action in semiconductor nanowires has been proven and realized by optical pumping, but above rather high threshold values. A lower threshold could be realized e.g. by doping with optically active impurities. Therefore, the main goal of this project will be the profound investigation of the dynamics of the intra-shell luminescence as well as the interaction of luminescence-centers with the cavity of nanowire LED and laser structures. The doping approach by suitable rare-earth elements or transition metals will be in general performed via ion implantation, and all material classes as well as LED structures offered by the FOR will be used as hosts. A comparison with theory will give detailed insight to the states as well as to the interaction with the nanowire matrix. A second important goal of this project will be the evaluation of the electro-luminescence response of special LED heterostructures, which are contacted in “sandwich” geometry rather than at the opposite ends of the nanowires. Experiments will be performed as a function of several parameters and its interaction with the environment studied in detail. The optimization of both issues (doping, sandwich geometry) directly target on the ultimate goal of an electrically pumped nanowire laser.

半导体纳米线中的激光作用已经通过光泵浦被证明和实现，但是高于相当高的阈值。较低的阈值可以例如通过掺杂光学活性杂质来实现。因此，本项目的主要目标将是深入研究壳层内发光的动力学以及发光中心与纳米线LED和激光器结构的腔的相互作用。通过合适的稀土元素或过渡金属的掺杂方法通常将通过离子注入来执行，并且FOR提供的所有材料类别以及LED结构将被用作主体。与理论的比较将提供详细的洞察力的状态，以及与纳米线矩阵的相互作用。该项目的第二个重要目标是评估特殊LED异质结构的电致发光响应，这些异质结构以“三明治”几何形状接触，而不是在纳米线的相对两端。实验将作为几个参数的函数进行，并详细研究其与环境的相互作用。这两个问题（掺杂，三明治几何形状）的优化直接针对电泵浦纳米线激光器的最终目标。