Free—Carrier Screening in Coupled Electron-Phonon Systems out of Equilibrium

1996 ◽  
pp. 425-427
Author(s):  
W. Pötz ◽  
U. Hohenester
Keyword(s):  
Carrier Screening ◽  
Free Carrier

Illumination-dependent free carrier screening effect on the performance evolution of ZnO piezotronic strain sensor

Nano Research ◽  
2016 ◽  
Vol 9 (4) ◽  
pp. 1091-1100 ◽  
Author(s):  
Pei Lin ◽  
Yousong Gu ◽  
Xiaoqin Yan ◽  
Shengnan Lu ◽  
Zheng Zhang ◽  
...  
Keyword(s):  
Strain Sensor ◽  
Carrier Screening ◽  
Free Carrier ◽  
Screening Effect

Photovoltaic spectroscopic study of GaN epilayers and InGaN quantum well structures

1999 ◽  
Vol 14 (7) ◽  
pp. 2794-2798 ◽  
Author(s):  
W. Liu ◽  
M. F. Li ◽  
K. L. Teo ◽  
Nakao Akutsu ◽  
Koh Matsumoto
Keyword(s):  
Quantum Well ◽  
Absorption Edge ◽  
Room Temperature ◽  
Carrier Screening ◽  
Free Carrier ◽  
Exciton Absorption ◽  
Quantum Well Structures ◽  
Bulk Absorption ◽  
Lock In ◽  
Reference Phase

Room-temperature photovoltaic spectroscopy was applied to study undoped GaN, n-type GaN, and InGaN quantum well structures. Clear exciton absorption was observed in the photovoltaic spectra of the undoped GaN, and polarization measurements were made to identify the exciton absorption. For the n-type GaN sample, instead of the exciton absorption we observed only bulk absorption edge, which may be due to the free carrier screening effect. For the InGaN quantum well structures, the photovoltaic spectra showed relatively complicated line shape due to the overlap of the signals from different layers. By changing the reference phase of the lock-in amplifier, we were able to suppress some of the signals and thus identify the origin of the corresponding signal.

Free-carrier screening of the interaction between excitons and longitudinal-optical phonons inInxGa1−xAs-InP quantum wells

1987 ◽  
Vol 35 (11) ◽  
pp. 5925-5928 ◽  
Author(s):  
M. S. Skolnick ◽  
K. J. Nash ◽  
P. R. Tapster ◽  
D. J. Mowbray ◽  
S. J. Bass ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Longitudinal Optical ◽  
Carrier Screening ◽  
Free Carrier ◽  
Optical Phonons

Effect of free carrier screening on LO-phonon emission time

1984 ◽  
Vol 49 (6) ◽  
pp. 587-591 ◽  
Author(s):  
Áurea R. Vasconcellos ◽  
Roberto Luzzi
Keyword(s):  
Carrier Screening ◽  
Free Carrier ◽  
Phonon Emission ◽  
Emission Time

Surprising stability of the trion against the free carrier screening

2010 ◽  
Vol 7 (6) ◽  
pp. 1661-1664 ◽  
Author(s):  
Albert A. Klochikhin ◽  
Vladimir P. Kochereshko ◽  
Luciene Besombes ◽  
Greg Karczewski ◽  
Tomek Wojtowicz ◽  
...  
Keyword(s):  
Carrier Screening ◽  
Free Carrier
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