›› 2010, Vol. 23 ›› Issue (8): 43-.

• Articles • Previous Articles     Next Articles

Simulation and Optimization of Current Distribution in GaN-based LEDs

 LIU Yi, ZHAO Guang-Cai, LI Pei-Xian   

  1. (School of Technical Physics,Xidian University,Xi'an 710071,China)
  • Online:2010-08-15 Published:2011-03-28


Electrical properties of a LED (light emitting diode) is simulated with the software of SILVACO,by using two-dimensional finite element method.The current distributions of three LEDs of different size are compared,and the relationship between the current density and L is found,which indicates that current uniformity can be improved by reducing the current expansion length(L).Five different kinds of power LEDs with a chip size of 1 mm×1 mm and with different electrode structures are simulated and compared,and the optimal electrode structure is found.

Key words: GaN;LED;current spreading;electrode structure

CLC Number: 

  • TN304.2+3