Fundamental researches on the quantum well interband transition detector(Invited)

2021 ◽  
Vol 50 (1) ◽  
pp. 20211007-20211007
Author(s):  
岳琛 Chen Yue ◽  
杨浩军 Haojun Yang ◽  
吴海燕 Haiyan Wu ◽  
李阳锋 Yangfeng Li ◽  
孙令 Ling Sun ◽  
...  
2018 ◽  
Vol 32 (05) ◽  
pp. 1850052 ◽  
Author(s):  
B. O. Alaydin ◽  
E. Ozturk ◽  
S. Elagoz

In this paper, the optical and electronic properties of asymmetric triple quantum well (ATQW) structures are studied depending on the indium concentrations while quantum well (QW) thicknesses and barrier widths are kept constant. Calculation of electronic properties are done within the framework of the effective mass approximation. The indium concentrations in left quantum well (LQW) and right quantum well (RQW) are varied in order to see the change of energy levels. Then, interband transition energies, wavelengths, oscillator strengths and radiative decay times are determined depending on barrier height. The scope of this study, for the first time in the literature, covers converged interband transition energies for the asymmetric quantum well structures.


2018 ◽  
Vol 67 (12) ◽  
pp. 128101
Author(s):  
Liu Jie ◽  
Wang Lu ◽  
Sun Ling ◽  
Wang Wen-Qi ◽  
Wu Hai-Yan ◽  
...  

2021 ◽  
Vol 50 (1) ◽  
pp. 20211007-20211007
Author(s):  
岳琛 Chen Yue ◽  
杨浩军 Haojun Yang ◽  
吴海燕 Haiyan Wu ◽  
李阳锋 Yangfeng Li ◽  
孙令 Ling Sun ◽  
...  

2002 ◽  
Vol 01 (01) ◽  
pp. 53-62 ◽  
Author(s):  
GERMAR HOFFMANN ◽  
RICHARD BERNDT

The emission of visible light is observed from the metallic quantum well system Na on Cu(111) when electrons tunnel from the tip of a scanning tunnelling microscope to an unoccupied state of the sample. Spectral analysis of the emission along with tunnelling spectroscopy is used to show that the emission is comprised of two components. A sharp spectral feature is found to be due to an interband transition between quantum well states of the Na layer. The other component is similar to plasmon-mediated emission observed previously from clean metal surfaces. The results suggest that light emission is a unique local probe of the electronic structure of quantum well systems.


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