High electric field effects on the impurity optical absorption coefficient in semiconductors

1998 ◽  
Author(s):  
Cleves Nunes
Keyword(s):  
Optical Absorption ◽  
Electric Field ◽  
Absorption Coefficient ◽  
High Electric Field ◽  
Optical Absorption Coefficient ◽  
Electric Field Effects ◽  
Field Effects

Origin of photoconductivity oscillations in CdS and CuCl

1968 ◽  
Vol 46 (7) ◽  
pp. 829-832 ◽  
Author(s):  
R. R. Haering ◽  
I. P. Batra
Keyword(s):  
Optical Absorption ◽  
Electric Field ◽  
Absorption Coefficient ◽  
Applied Electric Field ◽  
Incident Radiation ◽  
Longitudinal Optical ◽  
Optical Absorption Coefficient ◽  
Optical Phonons ◽  
Adequate Explanation ◽  
Field Dependent

An oscillatory dependence of photoconductivity on photon energy has been observed in many semiconductors. In some semiconductors the amplitude of the oscillations depends strongly on the magnitude of the applied electric field, while in others it is independent of the electric field. Field-dependent oscillations have been successfully accounted for in the literature but no adequate explanation has been offered so far for the second type of oscillations. We propose that these oscillations are the result of variations in the optical absorption coefficient arising from exciton formation by second- or higher-order processes involving longitudinal optical phonons as well as the incident radiation.

Electro-thermal stress and high electric field effects in CVD-Grown 4H-SiC P-N junction diodes

1996 ◽  
Author(s):  
Chin-Che Tin ◽  
Rongxiang Hu ◽  
Manfred Lang ◽  
Tamara Isaacs-Smith ◽  
Vipin Madangarli ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Electric Field ◽  
High Electric Field ◽  
Electric Field Effects ◽  
Field Effects
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