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Interdigitated Ambipolar Active Layer for Organic Phototransistor with Balanced Charge Transport

Title
Interdigitated Ambipolar Active Layer for Organic Phototransistor with Balanced Charge Transport
Authors
Jeong, UijinTarsoly, GergelyLee, JunghyunEun, YoungmooDo, JunghwanPyo, Seungmoon
Issue Date
2019-04
Citation
Advanced Electronic Materials, 5(4)
Type
Article
Article Type
Article
Author Keywords
ambipolar charge transportoptical sensororganic field-effect transistorsorganic phototransistorsphotoresponse
Keywords
FIELD-EFFECT TRANSISTORSPOLYMERPENTACENESEMICONDUCTORSPHOTORESPONSEDERIVATIVESNANOWIRESCHANNELS
ISSN
2199-160X
Abstract
The formation and characterization of interdigitated ambipolar active layers prepared by a hybrid (solution processing and thermal vacuum evaporation) method for a polymer-gated organic phototransistor with highly balanced ambipolar charge transport is reported. The interdigitated active layer is comprised of a solution-processed single-crystalline microcrystal array of p-type 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene) and a thin film of n-type N,N'-ditridecylperylene-3,4,9,10-tetracarboxylic diimide (PTCDI-C13). The TIPS-pentacene single-crystalline microcrystal, which is confirmed using X-ray diffractometry and polarized optical microscopy, is embedded in the PTCDI-C13 film deposited using a thermal vacuum evaporation method. The devices with the interdigitated active layer exhibit selective charge transport characteristics varying from unipolar to ambipolar depending on the thickness of the PTCDI-C13 film. The fabricated ambipolar organic transistor shows high photoresponsivity at low light intensities and good dynamic photoresponse. These results demonstrate the potential use of such devices in ambipolar optoelectronic applications.
URI
http://hdl.handle.net/20.500.11750/9902
DOI
10.1002/aelm.201800652
Publisher
Wiley-VCH Verlag
Files:
There are no files associated with this item.
Collection:
Center for Core Research Facilities1. Journal Articles


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