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(a) Schematic illustrations of the device and chemical structures of the triple-layer LE-OFET. ITO stands for indium tin oxide. (b) Energy-level diagram of the triple-layer heterostructure. (C) Optical micrograph of the light emission from the triple-layer LE-OFET (Vds = Vgs = 90 V). Reprinted from [52] with permission; © 2010, Nature Publishing Group.
