High quantum efficiency of violet-blue to green light emission in InGaN quantum well structures grown by graded-indium-content profiling method

2007 ◽  
Vol 90 (1) ◽  
pp. 011912 ◽  
Author(s):  
Yong-Hoon Cho ◽  
Y. P. Sun ◽  
H. M. Kim ◽  
T. W. Kang ◽  
E.-K. Suh ◽  
...  
2011 ◽  
Vol 98 (20) ◽  
pp. 201107 ◽  
Author(s):  
R. M. Farrell ◽  
C. J. Neufeld ◽  
S. C. Cruz ◽  
J. R. Lang ◽  
M. Iza ◽  
...  

Author(s):  
D.L. Barton ◽  
P. Tangyunyong ◽  
J.M. Soden ◽  
A.Y. Liang ◽  
F.J. Low ◽  
...  

Abstract We present results using near-infrared (NIR) cameras to study emission. characteristics of common defect classes for integrated circuits (ICs). The cameras are based on a liquid nitrogen cooled HgCdTe imaging array with high quantum efficiency and very low read noise. The array was developed for infrared astronomy and has high quantum efficiency in the wavelength range from 0.8 to 2.5 µm. For comparison, the same set of samples used to characterize the performance of the NIR camera were studied using a non-intensified, liquidnitrogen- cooled, slow scan CCD camera (with a spectral range from 400-1100 nm). Our results show that the NIR camera images all of the defect classes studied here with much shorter integration times than the cooled CCD, suggesting that photon emission beyond 1 µm is significantly stronger than at shorter wavelengths.


2012 ◽  
Vol 33 (5) ◽  
pp. 053001
Author(s):  
Hongying Guo ◽  
Yuanping Sun ◽  
Yong-Hoon Cho ◽  
Eun-Kyung Suh ◽  
Hai-Joon Lee ◽  
...  

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