【摘 要】
：
Strain-induced quantum dots (QDs) like island formations are demonstrated to effectively suppress pits/dislocation generation in high indium content (26.8％) InGa
【机 构】
：
Semiconductor Photonics Research Center,Department of Physics,Xiamen University,Xiamen 361005“,”Key
论文部分内容阅读
Strain-induced quantum dots (QDs) like island formations are demonstrated to effectively suppress pits/dislocation generation in high indium content (26.8％) InGaN active layers.In addition to the strain redistribution in the QD-like islands,strain modulation on the InGaN active layers by using the GaN island capping is employed to form an increased surface potential barrier around the dislocation cores,which inhibits the carrier transport to the surrounding dislocations.Cathodoluminescence shows distinct double-peak emissions at 503nm and 444nm,corresponding to the In-rich QD-like emission and the normal quantum well emission,respectively.The QD-like emission becomes dominated in photoluminescence due to the carrier localization effect of In-rich InGaN QDs at relatively low “carrier injection current”.Accordingly,green emission may be enhanced by the following origins:(1) reduction in pits/dislocations density,(2) carrier localization and strain reduction in QDs,(3) strain modulation by GaN island capping,(4) enhanced light extraction with faceted GaN islands on the surface.
其他文献
本文主要对国内外在经济发展与生态环境关系方面的研究进展状况进行了综述。不管是国外还是国内,从研究文献来看,研究内容主要体现在两个方面:一是围绕着EKC曲线理论而进行的
An all-optical cesium magnetometer with high sensitivity based on absorptive detection is reported.The experiment achieves a polarized rotational spectrum of th
The effect of short-range and tensor correlations on nuclear symmetry energy is investigated by using realistic nuclear momentum distribution n(k).For finite nu
鄱阳县五一中心学校位于“中国湖城——鄱阳”县城建设路中段,这里民风淳朴、学风浓郁、文化底蕴深厚.学校与江西省最大的文庙——鄱阳文庙毗邻,古代学府与现代学校相得益彰,
云媒资是当今传媒界正在建设或将要建设的“云媒资库”的内容部分。云媒资不但应用于媒体内网,同时也可发布于外网;它不仅面向媒体从业人员,也可面向社会,面向全体网民。与传
一带一路的概念是“丝绸之路经济带”和“21世纪海上丝绸之路”的简称,2013年9月10日由中华人民共和国主席习近平提出的建设“新丝绸之路经济带”以及“21世纪海上丝绸之路”
宜春市翰林学校是一所由宜阳新区管理的九年一贯制公办学校,学校占地面积54亩,建筑面积2.3万平方米.学校按国家标准配备多功能厅、学术报告厅、电视台、各类教学实验室等功能
Magnetoresistance in the structure of ferromagnetic/nonmagnetic/ferromagnetic spin valves are studied theoretically from the spin diffusion theory and Ohms law.
The impact of interfacial trap states on the stability of amorphous indium-gallium-zinc oxide thin film transistors is studied under positive gate bias stress.W
The interaction between a functionalized single-wailed carbon nanotube (f-SWCNT) and the YAP65WW protein domain is investigated by using molecular dynamics simu