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CHARGE TRANSPORT IN ORGANIC AND HYBRID PEROVSKITE FIELD EFFECT TRANSISTORS

Electronic Theses and Dissertations

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title
CHARGE TRANSPORT IN ORGANIC AND HYBRID PEROVSKITE FIELD EFFECT TRANSISTORS
author
Mei, Yaochuan
abstract
Organic semiconductors and hybrid organic/inorganic perovskite semiconductors can address new applications, which are off-limits for conventional silicon-based electronics. We fabricate organic field-effect transistors (OFETs) and through the use of several device architectures, in combination with surface treatments, we were able to achieve mobilities as high as 6.8 cm2/Vs. We find that the microstrain induced in the organic semiconductor layer by the mismatch in the thermal expansion between the consecutive device layers generates trapping states and localize charge carriers, leading to a surprising universal scaling between the activation energy of the devices and the interfacial thermal expansion mismatch coefficient.
subject
charge transport
field-effect transistors
hybrid perovskite
organic semiconductors
contributor
Jurchescu, Oana D (committee chair)
Carroll, David L (committee member)
Guthold, Martin (committee member)
Macosko, Jed (committee member)
date
2016-05-21T08:35:29Z (accessioned)
2018-05-20T08:30:13Z (available)
2016 (issued)
degree
Physics (discipline)
embargo
2018-05-20 (terms)
identifier
http://hdl.handle.net/10339/59262 (uri)
language
en (iso)
publisher
Wake Forest University
type
Dissertation

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