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Title: Temperature-dependent transition from injection-limited to space-charge-limited current in metal-organic diodes
Authors: Zheng, Y. 
Wee, A.T.S. 
Troadec, C.
Chandrasekhar, N.
Issue Date: 2009
Citation: Zheng, Y., Wee, A.T.S., Troadec, C., Chandrasekhar, N. (2009). Temperature-dependent transition from injection-limited to space-charge-limited current in metal-organic diodes. Applied Physics Letters 95 (14) : -. ScholarBank@NUS Repository.
Abstract: Based on the assumption that the contact barrier height determines the current flow in organic semiconductor-based electronic devices, charge injection at metal-organic (MO) interfaces has been extensively investigated, while space-charge conduction in organic bulk is generally overlooked. Recent theoretical modeling and simulation have pointed out that such a simplification is questionable due to the hopping nature of charge injection and hopping-related space-charge conduction. Here we show experimentally that charge transport in MO diodes is a complex interplay between injection-limited current (ILC) and space-charge-limited current (SCLC). We report the experimental observation of ILC-to-SCLC transition in Ag/pentacene/Ag diodes as a function of temperature. © 2009 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.3243844
Appears in Collections:Staff Publications

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