White vertical organic permeable-base light-emitting transistors obtained by mixing of blue exciton and orange interface exciplex emissions

Abstract

In contrast to passive organic devices, such as organic light-emitting diodes and organic solar cells, which require a transistor in electrical circuits to modulate in/out-put signals and/or to reduce parasite...

Interlayer and intermolecular excitons in various donor–acceptor heterostructures: applications to excitonic devices

“…Leitonas et al fabricated a vertical light-emitting transistor using C70, PO-T2T, CzPm (or mCP), and TAPC layers with emitter, base, and collector electrodes, such as bipolar junction transistors (BJTs). 132 The organic light-emitting transistor emitted white light, which was composed of blue light from CzPm and orange light from XPs formed by CzPm and TAPC, as shown in Fig. 33a.…”

“…As theoretically thermally activated delayed fluorescence (TADF)-hosting XPs show nearly 100% of internal quantum efficiency (IQE), 13,125 they have been investigated as a light-emitting source or energy host in the emitting layer (EML) of organic LEDs (OLEDs). 13,[108][109][110][114][115][116][118][119][120]122,123,[125][126][127][128][129][130][131][132] For example, Zhang et al reported on a blue phosphorescent organic LED (PhOLED) fabricated by spin-coating of small molecule TCTA (D), 2PO (or 3PO as A), and FIrpic (as phosphor) mixed solution. 109 Huang et al reported on the deep-red PhOLED based on XPs from small molecules; m-MTDATA (D), o-CzOXD (A), and iridium (Ir) cored-red phosphors.…”

“…Leitonas et al fabricated a vertical light-emitting transistor using C70, PO-T2T, CzPm (or mCP), and TAPC layers with emitter, base, and collector electrodes, such as bipolar junction transistors (BJTs). 132 The Fig. 33 (a) Left: Scheme of the device structure of white (blue) organic light emitting transistors (OLETs).…”

“…Reproduced with permission. 132 Copyright 2022, Royal Society of Chemistry. (b) Schematic of the device structure and, electrical and optical transfer characteristics for HOLEFETs with TCTA/B3PYMPM exciplex TADF emitter at V DS = À80 V. Reproduced with permission.…”

“…Right: Photo images of the white EL emission, and EL spectra with various bias. Reproduced with permission 132. Copyright 2022, Royal Society of Chemistry.…”