Improved emission efficiency of a-plane GaN light emitting diodes with silica nano-spheres integrated into a-plane GaN buffer layer

Park, Sung Hyun; Park, Jinsub; You, Duck-Jae; Joo, Kisu; Moon, Daeyoung; Jang, Jeonghwan; Kim, Donguk; Chang, Hojun; Moon, Sungnam; Song, Yoo-Kyung; Lee, Gun-Do; Jeon, Heonsu; Xu, Jimmy; Nanishi, Yasuishi; Yoon, Euijoon

doi:10.1063/1.4716472

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Improved emission efficiency of a-plane GaN light emitting diodes with silica nano-spheres integrated into a-plane GaN buffer layer

Park, Sung Hyun;
Park, Jinsub;
You, Duck-Jae;
Joo, Kisu;
Moon, Daeyoung;
외 10명

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7

초록

A simple and inexpensive technique to improve the emission efficiency of nonpolar a-plane light emitting diodes (LEDs) is proposed. The 3-dimensional growth nature of a-plane GaN was utilized to form the regrowth template of a-plane GaN. Subsequently, the controlled integration of silica nano-spheres (CIS) into the regrowth template is performed to improve the crystal quality of a-plane GaN by epitaxial lateral overgrowth method. In addition, the CIS improves light extraction by the scattering process. The light output power from the CIS a-plane GaN LEDs showed 130%-150% increase compared to that of LED without silica nano-spheres.

키워드

LATERAL OVERGROWTH; STACKING-FAULTS; THIN-FILMS; GROWTH; SAPPHIRE; NITRIDE; SI

제목: Improved emission efficiency of a-plane GaN light emitting diodes with silica nano-spheres integrated into a-plane GaN buffer layer

저자: Park, Sung Hyun; Park, Jinsub; You, Duck-Jae; Joo, Kisu; Moon, Daeyoung; Jang, Jeonghwan; Kim, Donguk; Chang, Hojun; Moon, Sungnam; Song, Yoo-Kyung; Lee, Gun-Do; Jeon, Heonsu; Xu, Jimmy; Nanishi, Yasuishi; Yoon, Euijoon

DOI: 10.1063/1.4716472

발행일: 2012-05

유형: Article

저널명: Applied Physics Letters

권: 100

호: 19

페이지: 1 ~ 4