期刊
ADVANCED MATERIALS
卷 33, 期 5, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202005456
关键词
electrochemiluminescence gels; electrochemiluminescent transistors; high mobility; light‐ emitting transistors; uniform light‐ emission
类别
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2019R1F1A1061610, 2016R1D1A1B04935156]
- National Research Foundation of Korea [2016R1D1A1B04935156] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study introduces a novel ECLT device platform, demonstrating successful fabrication of high-performance LETs using various conventional non-emissive semiconductors, with high carrier mobility and uniform light emission achieved.
Light-emitting transistors (LETs) have attracted a significant amount of interest as multifunctional building blocks for next-generation electronics and optoelectronic devices. However, it is challenging to obtain LETs with a high carrier mobility and uniform light-emission because the semiconductor channel should provide both the electrical charge transport and optical light-emission, and typical emissive semiconductors have low, imbalanced carrier mobilities. In this work, a novel device platform that adapts the electrochemiluminescence (ECL) principle in LETs, referred to as an ECL transistor (ECLT) is proposed. ECL is a light-emission phenomenon from electrochemically excited luminophores generated by redox reactions. A solid-state ECL electrolyte consisting of a network-forming polymer, ionic liquid, luminophore, and co-reactant is employed as the light-emitting gate insulator of the ECLT. Based on this construction, high-performance LETs that make use of various conventional non-emissive semiconductors (e.g., poly(3-hexylthiophene), zinc oxide, and reduced graphene oxide) are successfully demonstrated. All the devices exhibit a high mobility (0.9-10 cm(2) V-1 s(-1)) and a uniform light-emission. This innovative approach demonstrates a novel LET platform and provides a promising pathway to achieve significant breakthroughs to develop electronic circuits and optoelectronic applications.
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