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Title: Molecular Design Strategies toward Improvement of Charge Injection and Ionic Conduction in Organic Mixed Ionic–Electronic Conductors for Organic Electrochemical Transistors

Journal Article · · Chemical Reviews
 [1]; ORCiD logo [2]; ORCiD logo [3]
  1. Materials Science and Engineering Department, University of Washington, Seattle, Washington 98195, United States
  2. Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
  3. Materials Science and Engineering Department, University of Washington, Seattle, Washington 98195, United States, Department of Chemistry, University of Washington, Seattle, Washington 98195, United States, Molecular Engineering & Sciences Institute, University of Washington, Seattle, Washington 98195, United States

Expanding the toolbox of the biology and electronics mutual conjunction is a primary aim of bioelectronics. The organic electrochemical transistor (OECT) has undeniably become a predominant device for mixed conduction materials, offering impressive transconduction properties alongside a relatively simple device architecture. In this review, we focus on the discussion of recent material developments in the area of mixed conductors for bioelectronic applications by means of thorough structure-property investigation and analysis of current challenges. Fundamental operation principles of the OECT are revisited, and characterization methods are highlighted. Current bioelectronic applications of organic mixed ionic-electronic conductors (OMIECs) are underlined. Challenges in the performance and operational stability of OECT channel materials as well as potential strategies for mitigating them, are discussed. This is further expanded to sketch a synopsis of the history of mixed conduction materials for both p- and n-type channel operation, detailing the synthetic challenges and milestones which have been overcome to frequently produce higher performing OECT devices. The cumulative work of multiple research groups is summarized, and synthetic design strategies are extracted to present a series of design principles that can be utilized to drive figure-of-merit performance values even further for future OMIEC materials.

Research Organization:
Okinawa Inst. of Science and Technology Graduate Univ. (Japan); Univ. of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); European Research Council (ERC); European Union’s Horizon 2020; Engineering and Physical Sciences Research Council (EPSRC); National Science Foundation (NSF)
Grant/Contract Number:
SC0020046; OSR-2018-CRG/CCF-3079; OSR-2019-CRG8-4086; OSR-2018-CRG7-3749; 610115; 952911; 862474; 1922259
OSTI ID:
1835614
Alternate ID(s):
OSTI ID: 1846242; OSTI ID: 1906253
Journal Information:
Chemical Reviews, Journal Name: Chemical Reviews Vol. 122 Journal Issue: 4; ISSN 0009-2665
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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