Department of Physics and Astronomy, Seoul National University, Seoul, 151-747, Korea.
Adv Mater. 2014 May 21;26(19):3019-23. doi: 10.1002/adma.201305684. Epub 2014 Feb 22.
Microdonut-shaped GaN/Inx Ga1-x N light-emitting diode (LED) microarrays are fabricated for variable-color emitters. The figure shows clearly donut-shaped light emission from all the individual microdonut LEDs. Furthermore, microdonut LEDs exhibit spatially-resolved blue and green EL colors, which can be tuned by either controlling the external bias voltage or changing the size of the microdonut LED.
微环形 GaN/InxGa1-xN 发光二极管 (LED) 微阵列被制造用于可变颜色发射器。图中清楚地显示了所有单个微环形 LED 的环形光发射。此外，微环形 LED 表现出空间分辨的蓝色和绿色电致发光颜色，这可以通过控制外部偏置电压或改变微环形 LED 的尺寸来进行调节。
