Figure. The schematic illustrating the light-emitting polymer semiconductor in the transistor channel and the source (S) and drain (D) electrodes. (IMAGE)
Caption
During transistor operation, a hole channel forms, while a cation-induced electric double layer is simultaneously established at the drain electrode, allowing electrons and holes to recombine and generate light (electroluminescence). This behavior is enabled by the spontaneous migration of cations, promoted by the ion-transport enhancer incorporated into the active layer. Owing to this stable and efficient electric-double-layer-based charge carrier injection, the device exhibits bright and stable light emission despite its single-active-layer architecture.
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© Nature Materials, originally published in Nature Materials
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