scholarly journals Opposite carrier dynamics and optical absorption characteristics under external electric field in nonpolar vs polar InGaN/GaN based quantum heterostructures

2011 ◽  
Vol 19 (6) ◽  
pp. 5442 ◽  
Author(s):  
Emre Sari ◽  
Sedat Nizamoglu ◽  
Jung-Hun Choi ◽  
Seung-Jae Lee ◽  
Kwang-Hyeon Baik ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Electric Field ◽  
External Electric Field ◽  
Carrier Dynamics ◽  
Absorption Characteristics ◽  
Quantum Heterostructures

The electronic states and the optical absorption for an asymmetrical quantum well applied with an external electric field

2019 ◽  
Vol 33 (26) ◽  
pp. 1950301 ◽  
Author(s):  
Yu Liu ◽  
Youbin Yu
Keyword(s):  
Optical Absorption ◽  
Iterative Method ◽  
Electric Field ◽  
Quantum Well ◽  
Quantum Wells ◽  
External Electric Field ◽  
Electronic States ◽  
Matrix Approach ◽  
Absorption Coefficients ◽  
Asymmetric Quantum

Electric field influences on the electronic states and the optical absorption in an asymmetrical quantum well with semiparabolic potential are investigated. The formula for the absorption coefficients in this asymmetrical quantum well with electric field are deduced by applying iterative method and density-matrix approach. The results are discussed with GaAs/AlGaAs materials and show that the external electric field has a significant effect on the electronic states and absorption coefficients of asymmetric quantum wells.

Effect of an external electric field on the yield of trapped electrons in a γ-irradiated hydrocarbon glass

1977 ◽  
Vol 55 (23) ◽  
pp. 3973-3977 ◽  
Author(s):  
Noriyuki Kato ◽  
Toyoaki Kimura ◽  
Kenji Fueki
Keyword(s):  
Optical Absorption ◽  
Electric Field ◽  
External Electric Field ◽  
Absorption Spectroscopy ◽  
Experimental Results ◽  
Optical Absorption Spectroscopy ◽  
Geminate Recombination ◽  
Trapped Electrons ◽  
Trapped Electron

Trapped electron yields were measured by means of optical absorption spectroscopy for a hydrocarbon glass γ-irradiated at 77 K in the presence of an external electric field. It was observed that the yield of trapped electrons increased in the presence of an external electric field as compared with that in the absence of an external electric field. The experimental results were analyzed theoretically and interpreted as due to overall effects involving changes in geminate recombination times which were caused by an external electric field.

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