scholarly journals Electric Field Distribution in strained p-i-n GaN/InGaN multiple quantum well structures.

Author(s):  
A.N. Cartwright ◽  
Paul M. Sweeney ◽  
Thomas Prunty ◽  
David P. Bour ◽  
Michael Kneissl

The presence of piezoelectric fields within p-i-n GaN/InGaN multiple quantum well structures is discussed. Time integrated and time-resolved photoluminescence measurements and theoretical calculations of the effect of these fields is presented. Furthermore, a description of how these fields influence the carrier dynamics and a discussion of how the piezoelectric field effects the design of GaN/InGaN devices is presented.

1993 ◽  
Vol 326 ◽  
Author(s):  
Xuelong Cao ◽  
Ahn Goo Choo ◽  
L. M. Smith ◽  
Howard E. Jackson ◽  
P. Chen ◽  
...  

2004 ◽  
Vol 831 ◽  
Author(s):  
Kristin L. Bunker ◽  
Roberto Garcia ◽  
Phillip E. Russell

ABSTRACTScanning Electron Microscopy (SEM)-based Cathodoluminescence (CL) experiments were used to study the influence of piezoelectric fields on the optical and electrical properties of a commercial InGaN-based Multiple Quantum Well (MQW) Light Emitting Diode (LED). The existence and direction of a piezoelectric field in the InGaN-based LED was determined with voltage dependent SEM-CL experiments. The CL emission peak showed a blueshift followed by a redshift with increasing reverse bias due to the full compensation of the piezoelectric field. It was determined that the piezoelectric field points in the [000–1] direction and the magnitude was estimated to be approximately 1.0±0.2 MV/cm. SEM-CL carrier generation density variation and electroluminescence experiments were used to confirm the existence of a piezoelectric field in the InGaN-based MQW LED.


1989 ◽  
Vol 55 (8) ◽  
pp. 772-774 ◽  
Author(s):  
M. Capizzi ◽  
C. Coluzza ◽  
A. Frova ◽  
U. Cebulla ◽  
A. Forchel

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