Title :
Thickness-Dependent Transient Photocurrent Response of Organic Photodiodes
Author :
Valouch, Sebastian ; Nintz, Mirco ; Kettlitz, Siegfried W. ; Christ, Nico S. ; Lemmer, Uli
Author_Institution :
DFG Center for Functional Nanostruct., Karlsruhe Inst. of Technol., Karlsruhe, Germany
fDate :
4/1/2012 12:00:00 AM
Abstract :
We report on the transient photocurrent response of organic photodiodes based on a bulk-heterojunction of polyhexylthiophene and -phenyl--butyric acid methyl ester. By changing the thickness of the active layer via different spin speeds we explore the influence of geometric capacitance and bias voltage on the transient photocurrent decay upon excitation with a nanosecond laser pulse.
Keywords :
capacitance; organic semiconductors; photoconductivity; photodiodes; transients; active layer thickness; bias voltage; bulk heterojunction; geometric capacitance; organic photodiodes; phenyl-butyric acid methyl ester; polyhexylthiophene; spin speed; thickness dependent transient photocurrent response; transient photocurrent decay; Charge carriers; Electrodes; Photoconductivity; Photodiodes; Photovoltaic cells; Resistance; Transient analysis; Bulk heterojunction; organic photodiode; transient photocurrent;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2184276
