Research on enhancement of the extraction efficiency of C-band LED with 2D photonic crystals

Authors

Kejia Wei, Tianjin Polytechnic University
Hongqiang Li, Tianjin University of Technology, Tianjin Polytechnic UniversityFollow
Haidong Chen, Polytechnic University
Enbang Li, University of WollongongFollow
Zhihui Liu, Tianjin Polytechnic UniversityFollow

RIS ID

107927

Publication Details

Wei, K. J., Li, H. Q., Chen, H. D., Li, E. B. & Liu, Z. H. (2012). Research on enhancement of the extraction efficiency of C-band LED with 2D photonic crystals. Spectroscopy and Spectral Analysis, 32 (9), 2341-2346.

Abstract

On-chip light source is the main development part of the optoelectronic systems in the future. As on-chip light source, the main disadvantage of LED is its low extraction efficiency. Photonic crystal is an efficient method to increase the extraction efficiency of LED. The structure and parameters of the C-band LED was designed and the band gap of the 2D photonic crystals for different arrangement and different ratio was calculated using the finite-difference time-domain (FDTD) method, and then the best structural parameters of the 2D photonic crystals were determined using the method of band gap theory in this paper. Results show that the best structure is air holes PC with a triangular arrangement having a lattice constant of 500 nm and a ratio of 0.44.