Electrolyte-gated light-emitting transistors: working principle and applications
By Jiang Liu
Published in Materials Chemistry Frontiers
2017
Abstract
Adding solid electrolytes into organic semiconductors broadens the scope of material properties and electronic applications. Successful examples include polymer light-emitting electrochemical cells, electrolyte-gated organic transistors, and electrolyte-gated organic light-emitting transistors (EGLETs). EGLETs combine an organic light-emitting device and a transistor with a high capacitance electrolytic dielectric. Here we summarize recent progress in the development of EGLETs in both planar and vertical device architectures. The former offers a lateral geometry and in-plane light-emission for scientific scaffolds in the fundamental study of organic semiconductor opto-physics. The latter features surface emission with a unity aperture ratio, and it can be used in matrix displays without the requirement of external thin-film transistor arrays as the switching circuitry. This strategy paves an easy avenue towards fabricating highly integrated organic optoelectronic devices, and it offers a new test bed for research in iontronics and organic electronics.
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