Large enhancement of light-extraction efficiency from optically pumped, nanorod light-emitting diodes

Mei Ling Kuo, Ya Ju Lee, Thomas C. Shen, Shawn Yu Lin*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

17 引文 斯高帕斯(Scopus)

摘要

We report a threefold enhancement of light-emission intensity at λ=460nm and a 16-fold extractionefficiency enhancement measured from a 2D array of nanorod LEDs. The nano-LEDs are randomly arranged and have a typical rod diameter of 100-250 nm. From a combination of photoluminescence, reflectance, and excitation power-dependence measurements, we show that the enhanced emission is due mainly to modification of the extraction efficiency, and not to that of the internal efficiency. Furthermore, we show that the extraction enhancement originates from the randomness of the 2D array that scatters light efficiently into the air and the smallness of the nanorods that eliminates the guiding modes that trap light.

原文英語
頁(從 - 到)2078-2080
頁數3
期刊Optics Letters
34
發行號13
DOIs
出版狀態已發佈 - 2009 七月 1
對外發佈

ASJC Scopus subject areas

  • 原子與分子物理與光學

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