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White emission by self-regulated growth of InGaN/GaN quantum wells on in situ self-organized faceted n-GaN islands

机译:在原位自组织的多面n-GaN岛上通过InGaN / GaN量子阱的自调节生长实现白光发射

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摘要

The in situ self-organization of three-dimensional n-GaN islands of distinct sidewall faceting was realized by initial low V/III ratio growth under high reactor pressure followed by variations of the V/III ratio and reactor pressure. The naturally formed faceted islands with top and sidewall facets of various specific polar angles may serve as an ideal template for self-regulated growth of the InGaN/GaN multiple quantum wells (MQWs), i.e.the growth behavior is specific polar angle dependent. Further, the growth behavior and luminescence properties of the InGaN/GaN MQWs on various facets of different specific polar angles are directly compared and discussed. Tetrachromatic white emissions (blue, cyan, green, and red) from single-chip phosphor-free InGaN/GaN MQWs are realized by color tuning through island shaping, shape variations, and self-regulated growth of the InGaN/GaN MQWs
机译:明显的侧壁刻面的三维n-GaN岛的原位自组织是通过在高反应堆压力下初始低的V / III比生长,然后改变V / III比和反应堆压力来实现的。具有各种特定极角的顶面和侧壁小面的天然形成的刻面岛可以用作InGaN / GaN多量子阱(MQW)自调节生长的理想模板,即生长行为取决于特定的极角。此外,直接比较和讨论了InGaN / GaN MQW在不同比极性角的各个面上的生长行为和发光特性。来自单芯片无磷InGaN / GaN MQW的四色白色发射光(蓝色,青色,绿色和红色)是通过对岛形,形状变化和InGaN / GaN MQW的自调节生长进行颜色调整来实现的

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