Recent progress in high-mobility organic transistors: a reality check
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
Over the past three decades, significant research efforts have focused on improving the charge carrier mobility of organic thin‐film transistors (OTFTs). In recent years, a commonly observed nonlinearity in OTFT current–voltage characteristics, known as the “kink” or “double slope,” has led to widespread mobility overestimations, contaminating the relevant literature. Here, published data from the past 30 years is reviewed to uncover the extent of the field‐effect mobility hype and identify the progress that has actually been achieved in the field of OTFTs. Present carrier‐mobility‐related challenges are identified, finding that reliable hole and electron mobility values of 20 and 10 cm2 V−1 s−1, respectively, have yet to be achieved. Based on the analysis, the literature is then reviewed to summarize the concepts behind the success of high‐performance p‐type polymers, along with the latest understanding of the design criteria that will enable further mobility enhancement in n‐type polymers and small molecules, and the reasons why high carrier mobility values have been consistently produced from small molecule/polymer blend semiconductors. Overall, this review brings together important information that aids reliable OTFT data analysis, while providing guidelines for the development of next‐generation organic semiconductors.
Date Issued
2018-09-06
Date Acceptance
2018-04-10
Citation
Advanced Materials, 2018, 30 (36)
ISSN
0935-9648
Publisher
Wiley
Journal / Book Title
Advanced Materials
Volume
30
Issue
36
Copyright Statement
© 2018 John Wiley & Sons Ltd. This is the pre-peer reviewed version of the following article: A. F. Paterson, S. Singh, K. J. Fallon, T. Hodsden, Y. Han, B. C. Schroeder, H. Bronstein, M. Heeney, I. McCulloch, T. D. Anthopoulos, Adv. Mater. 2018, 30, 1801079., which has been published in final form at https://dx.doi.org/10.1002/adma.201801079
Sponsor
British Council (Turkey)
EPSRC
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000443377100008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
IL4 337323
EP/L016702/1
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
Chemistry, Physical
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Physics, Applied
Physics, Condensed Matter
Chemistry
Science & Technology - Other Topics
Materials Science
Physics
carrier mobility
charge transport
contact resistance
organic field-effect transistors
organic semiconductors
FIELD-EFFECT TRANSISTORS
THIN-FILM TRANSISTORS
PERFORMANCE N-TYPE
CHARGE-CARRIER MOBILITY
CM(2) V-1 S(-1)
SELF-ASSEMBLED MONOLAYERS
QUINOIDAL SMALL MOLECULES
MOLECULE/POLYMER SEMICONDUCTING BLENDS
MODIFIED NAPHTHODITHIOPHENE DIIMIDES
VERTICAL PHASE-SEPARATION
Publication Status
Published
Article Number
1801079
Date Publish Online
2018-07-18