Polarization property of deep-ultraviolet light emission from C-plane AlN/GaN short-period superlattices

2011 ◽  
Vol 99 (25) ◽  
pp. 251112 ◽  
Author(s):  
Yoshitaka Taniyasu ◽  
Makoto Kasu
Keyword(s):  
Ultraviolet Light ◽  
Light Emission ◽  
Polarization Property ◽  
Short Period ◽  
Short Period Superlattices ◽  
Deep Ultraviolet

Deep-ultraviolet light emission from 4H-AlN/4H-GaN short-period superlattice grown on 4H-SiC(112¯0)

2018 ◽  
Vol 112 (1) ◽  
pp. 012106 ◽  
Author(s):  
M. Kaneko ◽  
S. Ueta ◽  
M. Horita ◽  
T. Kimoto ◽  
J. Suda
Keyword(s):  
Ultraviolet Light ◽  
Light Emission ◽  
Short Period ◽  
Deep Ultraviolet

scholarly journals Deep Ultraviolet Light Emitting Diodes Based on Short Period Superlattices of AlN/AlGa(In)N

2003 ◽  
Vol 42 (Part 2, No. 11B) ◽  
pp. L1362-L1365 ◽  
Author(s):  
Sergey A. Nikishin ◽  
Vladimir V. Kuryatkov ◽  
Anilkumar Chandolu ◽  
Boris A. Borisov ◽  
Gela D. Kipshidze ◽  
...  
Keyword(s):  
Ultraviolet Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Short Period ◽  
Short Period Superlattices ◽  
Deep Ultraviolet ◽  
Ultraviolet Light Emitting Diodes

Enhanced electrical performance by modulation-doping in AlGaN-based deep ultraviolet light-emitting diodes

2019 ◽  
Vol 33 (08) ◽  
pp. 1950088
Author(s):  
Sipan Yang ◽  
Miao He ◽  
Jianchang Yan ◽  
Kunhua Wen ◽  
Junxi Wang ◽  
...  
Keyword(s):  
Ultraviolet Light ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
Electrical Performance ◽  
Algan Layer ◽  
Modulation Doping ◽  
Light Emitting ◽  
Growth Method ◽  
Deep Ultraviolet ◽  
Ultraviolet Light Emitting Diodes

Through the silicon modulation-doping (MD) growth method, the electrical performance of AlGaN-based deep ultraviolet light-emitting diodes (DUV-LEDs) is improved by replacing the commonly uniform-doped (UD) method of n-AlGaN layer. The electroluminescence characterisic measurements demonstrate the MD growth method could effectively enhance the light emission intensity. Both the forward voltage and reverse leakage current of the MD samples are obviously reduced compared to those of the UD sample. Due to the existence of periodic Si-MD superlattices in n-AlGaN layers, which may behave like a series of capacitors, the built-in electric fields are formed. Both the measured capacitance–voltage (C–V) characteristics, and related photoluminescence (PL) intensity with the Si-MD growth method are enhanced. In detail, the effects of these capacitors can enhance the peak internal capacitance up to 370 pF in the MD sample, whereas the UD sample is only 180 pF. The results also mean that with better current spreading ability in the MD sample, the MD processes can effectively enhance the efficiency and reliability of DUV-LEDs. Thus, the investigations of the Si-MD growth methods may be useful for improving the electrical performance of DUV-LEDs in future works. Meanwhile, this investigation may partly suggest the minor crystalline quality improvements in the epi-layers succeeding the MD n-AlGaN layer.

Deep-ultraviolet light emission properties of nonpolar M-plane AlGaN quantum wells

2014 ◽  
Vol 105 (5) ◽  
pp. 053104 ◽  
Author(s):  
Ryan G. Banal ◽  
Yoshitaka Taniyasu ◽  
Hideki Yamamoto
Keyword(s):  
Quantum Wells ◽  
Ultraviolet Light ◽  
Light Emission ◽  
Emission Properties ◽  
Deep Ultraviolet

scholarly journals Single deep ultraviolet light emission from boron nitride nanotube film

2010 ◽  
Vol 97 (14) ◽  
pp. 141104 ◽  
Author(s):  
Lu Hua Li ◽  
Ying Chen ◽  
Meng-Yeh Lin ◽  
Alexey M. Glushenkov ◽  
Bing-Ming Cheng ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Ultraviolet Light ◽  
Light Emission ◽  
Boron Nitride Nanotube ◽  
Deep Ultraviolet

AlN/AlGaN short-period superlattice sacrificial layers in laser lift-off for vertical-type AlGaN-based deep ultraviolet light emitting diodes

2009 ◽  
Vol 94 (6) ◽  
pp. 061117 ◽  
Author(s):  
Misaichi Takeuchi ◽  
Tomohiro Maegawa ◽  
Hiroshi Shimizu ◽  
Shin Ooishi ◽  
Takumi Ohtsuka ◽  
...  
Keyword(s):  
Ultraviolet Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Short Period ◽  
Deep Ultraviolet ◽  
Sacrificial Layers ◽  
Lift Off ◽  
Ultraviolet Light Emitting Diodes

Short-period AlGaN based superlattices for deep UV light emitting diodes grown by gas source molecular beam epitaxy

2005 ◽  
Vol 892 ◽  
Author(s):  
Sergey Nikishin ◽  
Boris Borisov ◽  
Vladimir Kuryatkov ◽  
Mark Holtz ◽  
Henryk Temkin
Keyword(s):  
Quantum Wells ◽  
Room Temperature ◽  
Light Emission ◽  
Uv Light ◽  
Growth Mode ◽  
Light Emitting ◽  
Gas Source ◽  
Luminescence Efficiency ◽  
Short Period ◽  
Short Period Superlattices

AbstractWe report the results of two studies of the growth and physical properties of AlGaN-based short-period superlattices (SPSLs), each aimed at improving light emission. In the first experiment, we grow structures on bulk AlN substrates. We observe ∼ 3 times higher luminescence efficiency than identically grown structures on sapphire. In the second experiment, we grow structures on sapphire while controlling the growth mode. We observe a significant improvement in the room temperature cathodoluminescence efficiency (at least by factor of 10) of AlGaN quantum wells when the 3D growth mode is induced by reduced flux of ammonia over identically prepared structures grown in the 2D mode.

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