標題: | High-Bandwidth Green Semipolar (20-21) InGaN/GaN Micro Light-Emitting Diodes for Visible Light Communication |
作者: | Chen, Sung-Wen Huang Huang, Yu-Ming Chang, Yun-Han Lin, Yue Liou, Fang-Jyun Hsu, Yu-Chien Song, Jie Choi, Joowon Chow, Chi-Wai Lin, Chien-Chung Horng, Ray-Hua Chen, Zhong Han, Jung Wu, Tingzhu Kuo, Hao-Chung 交大名義發表 光電系統研究所 電子工程學系及電子研究所 光電工程學系 National Chiao Tung University Institute of Photonic System Department of Electronics Engineering and Institute of Electronics Department of Photonics |
關鍵字: | semipolar GaN;micro light-emitting diode;visible light communication;high bandwidth |
公開日期: | 19-Aug-2020 |
摘要: | The light-emitting diode (LED) is among promising candidates of light sources in visible light communication (VLC); however, strong internal polarization fields in common c-plane LEDs, especially green LEDs, result in low frequency and limited transmission performance. This study aims to overcome the limited 3-dB bandwidth of long-wavelength InGaN/GaN LEDs. Thus, semipolar (20-21) micro-LEDs (mu LEDs) were fabricated through several improved approaches on epitaxy and chip processes. The mu LED exhibits a 525 nm peak wavelength and good polarization performance. The highest 3-dB bandwidth up to 756 MHz and 1.5 Gbit/s data rate was achieved under a current density of 2.0 kA/cm(2). These results suggest a good transmission capacity of green semipolar (20-21) mu LEDs in VLC applications. |
URI: | http://dx.doi.org/10.1021/acsphotonics.0c00764 http://hdl.handle.net/11536/155463 |
ISSN: | 2330-4022 |
DOI: | 10.1021/acsphotonics.0c00764 |
期刊: | ACS PHOTONICS |
Volume: | 7 |
Issue: | 8 |
起始頁: | 2228 |
結束頁: | 2235 |
Appears in Collections: | Articles |