论文期刊

Auxiliary structure of nano-pinnacle prepared on silicon substrate: Improving the emission intensity by 9 times in SSI-LEDs




作者: 刘凌光,王耀功,林媛媛,张小宁等
发表/完成日期: 2019-01-02
期刊名称: Materials Science in Semiconductor Processing
期卷:
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论文简介
properties, electrical and optical characteristics of the proposed structure device are investigated. Non-uniform size and geometry of nano-pinnacles are prepared by wet-etching, and the most frequent geometry is ~230×140nm pyramids. With help of the nano-pinnacle structure, the electric field strength distributed on treated surface of the nano-pinnacle sample is enhanced by ~4 times, resulting in the increase of the density of conductive paths by 3.6 times. By exploring the electrical and optical results, the onset voltage of light emission is decreased by 60% from −7.6V to −3.4V, and the emission intensity and efficiency are improved by ~9 times and ~8 times, respectively compared with the traditional structure device of SSI-LEDs.