Transient space-charge-limited currents in photoconductor-dielectric structure: A field-dependent mobility case

1975 ◽  
Vol 12 (4) ◽  
pp. 1275-1284
Author(s):  
B. N. Ganguly
Keyword(s):  
Space Charge ◽  
Dielectric Structure ◽  
Field Dependent ◽  
Space Charge Limited Currents ◽  
Space Charge Limited

A Unified Model for the Space Charge Limited Currents in Organic Materials Combining Field Dependent Mobility and Poole-Frenkel Detrapping

2001 ◽  
Vol 665 ◽  
Author(s):  
S. C. Jain ◽  
W. Geens ◽  
V. Kumar ◽  
A. Kapoor ◽  
A. Mehra ◽  
...  
Keyword(s):  
Space Charge ◽  
Schottky Contact ◽  
Unified Model ◽  
Zero Field ◽  
Field Dependent ◽  
Different Temperatures ◽  
Fast Rise ◽  
Space Charge Limited Currents ◽  
Bulk Space ◽  
Space Charge Limited

ABSTRACTWe have calculated J-V characteristics of an organic conducting sample (containing traps) including the Poole-Frenkel Effect (PFE). Both shallow and exponentially distributed traps are considered. We show that our approach is equivalent to combining the effect of trapping and using the field dependent mobility in one unified model. For shallow single level or shallow Gaussian traps, inclusion of PFE or using the (well-known) field dependent mobility gives the same dependence of current on voltage at a given temperature. However the value of zero field mobility µ0 comes out to be different. We have fabricated and measured the J-V curves of the ITO/MEH-OPV5/Al diodes. An extremely fast rise with voltage V is observed at small voltages, which can be interpreted either by the Schottky contact limited Shockley like current or by bulk space charge limited current with PFE. The correct mechanism can be determined by making J-V measurements at different temperatures.

Noise in space-charge limited currents in CdS crystals

Physica ◽  
1963 ◽  
Vol 29 (1) ◽  
pp. 78-82 ◽  
Author(s):  
R.J.J. Zijlstra ◽  
A. van der Ziel
Keyword(s):  
Space Charge ◽  
Space Charge Limited Currents ◽  
Space Charge Limited
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