Stimulated visible light emission from ultrathin GaAs single and multiple quantum wells sandwiched between indirect‐gap (Al0.49Ga0.51As) confining layers

1990 ◽  
Vol 56 (20) ◽  
pp. 1998-2000 ◽  
Author(s):  
J. H. Lee ◽  
K. Y. Hsieh ◽  
Y. L. Hwang ◽  
R. M. Kolbas
Keyword(s):  
Visible Light ◽  
Quantum Wells ◽  
Light Emission ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Confining Layers ◽  
Visible Light Emission

ZnS/Si/ZnS Quantum Well Structures for Visible Light Emission

1995 ◽  
Vol 405 ◽  
Author(s):  
Eric Bretschneider ◽  
Albert Davydov ◽  
Clint McCreary ◽  
Li Wang ◽  
Timothy J. Anderson ◽  
...  
Keyword(s):  
Visible Light ◽  
Quantum Wells ◽  
Near Infrared ◽  
Light Emission ◽  
Band Edge Emission ◽  
Multiple Quantum ◽  
Quantum Well Structures ◽  
Hole Trapping ◽  
Si Quantum Dots ◽  
Visible Light Emission

AbstractSilicon multiple quantum wells confined by ZnS barriers have been grown by MOCVD. Calculations indicate that well widths must be less than 15Å for visible light emission, basically independent of the band offsets. No near-infrared photoluminescence (except bulk Si band-edge emission) was observed from samples with 70Å or greater Si layers, using stimulation at 325 nm with a He-Cd laser; hole trapping in ZnS may play a role. However, we found evidence of yellow light emission from samples which possibly contain Si quantum dots embedded in ZnS.

InGaN/GaN Multiple Quantum Well Blue LEDs on 3C-SiC/Si Substrate

2011 ◽  
Vol 679-680 ◽  
pp. 801-803
Author(s):  
Ji Sheng Han ◽  
Sima Dimitrjiev ◽  
Li Wang ◽  
Alan Iacopi ◽  
Qu Shuang ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Epitaxial Growth ◽  
Light Emission ◽  
Multiple Quantum Well ◽  
Multiple Quantum Wells ◽  
Structural Quality ◽  
Multiple Quantum ◽  
Si Substrate ◽  
Si Substrates

Gallium nitrides are primarily used for their excellent light emission properties. GaN LEDs are mostly grown on foreign substrates, essentially sapphire and SiC, but more recently, also on Si substrates. In this paper, we will demonstrate that the high structural quality of InGaN/GaN multiple quantum wells can be deposited on 3C-SiC/Si (111) substrate using MOCVD. This demonstrates that 3C-SiC/Si is a promising template for the epitaxial growth of InGaN/GaN multiple quantum wells for LEDs.

Effect of growth interruptions on the light emission and indium clustering of InGaN/GaN multiple quantum wells

2001 ◽  
Vol 79 (16) ◽  
pp. 2594-2596 ◽  
Author(s):  
H. K. Cho ◽  
J. Y. Lee ◽  
N. Sharma ◽  
C. J. Humphreys ◽  
G. M. Yang ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Light Emission ◽  
Multiple Quantum Wells ◽  
Multiple Quantum

Characteristics of polarization emission in a-plane GaN-based multiple quantum wells structures

2012 ◽  
Vol 1432 ◽  
Author(s):  
Chiao-Yun Chang ◽  
Huei-Min Huang ◽  
Tien-Chang Lu ◽  
Hao-Chung Kuo ◽  
Shing-Chung Wang ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Light Emission ◽  
Quantum Confinement Effect ◽  
Polarized Light ◽  
Peak Position ◽  
Multiple Quantum Wells ◽  
Experimental Result ◽  
Multiple Quantum ◽  
Polarization Ratio ◽  
Quantum Well Width

ABSTRACTWe studied the polarization-dependent photoluminescence (PL) of a-plane GaN /AlGaN multiple quantum wells (MQWs) grown on r-plane sapphire substrate with the various well width from 1.5 to 7.33 nm. To clarify the reasons of light emission polarization properties, we applied the 6×6 k‧p model to simulate the E-k dispersion relation and the wave functions to obtain the polarization optical transitions. According to the experimental result, the PL emission peak position exhibits a red-shifted with increasing well width, due to the reduction of the quantum confinement effect. The polarization ratio of a-plane GaN/AlGaN MQWs increased from 0.236 to 0.274 with increasing the quantum well width. This phenomenon is believed to be that y-polarized light emission gradually dominates the PL spectrum and thus enhances the polarization ratio.

Efficient blue light emission from In_016Ga_084N/GaN multiple quantum wells excited by 248-μm femtosecond laser pulses

2014 ◽  
Vol 39 (12) ◽  
pp. 3555 ◽  
Author(s):  
Mao-Hui Yuan ◽  
Hui Li ◽  
Jian-Hua Zeng ◽  
Hai-Hua Fan ◽  
Qiao-Feng Dai ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Quantum Wells ◽  
Blue Light ◽  
Light Emission ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Blue Light Emission
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