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Title: Aggregates-induced dynamic negative differential resistance in conducting organic films
Authors: Xie, X.N. 
Wang, J. 
Loh, K.P. 
Wee, A.T.S. 
Issue Date: 2009
Citation: Xie, X.N., Wang, J., Loh, K.P., Wee, A.T.S. (2009). Aggregates-induced dynamic negative differential resistance in conducting organic films. Applied Physics Letters 95 (20) : -. ScholarBank@NUS Repository.
Abstract: This letter reports the negative differential resistance (NDR) behavior of perylene-3,4,9,10-tetracarboxylic-3,4,9,10-dianhydride films induced by aggregate formation in the film. It is observed that aggregate-states in the energy gap can by-pass the common charge conduction mode, and electron injection, trapping, and conduction through these states lead to the NDR characteristic. The rate-dependence of NDR is discussed in terms of the transit time and lifetime of the aggregates-states electrons. The quenching of NDR by photoillumination is also observed, and is attributed to the saturation of aggregates-states by photoelectrons. © 2009 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.3266854
Appears in Collections:Staff Publications

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