The proposed structure is promising for use with electrically pumped organic lasers. In addition, the emission color can be tuned from blue to white to green-yellow using the source-drain and gate voltages. In this architecture, there is little change in mobility, but the external quantum efficiency (EQE) of the ET-OLET is more than six times that of the conventional OLET because of the efficient Förster resonance energy transfer, which avoids exciton-charge annihilation. An organic fluorescent dye-doped polymethyl methacrylate (PMMA) layer is inserted below the conventional high-mobility organic semiconductor layer in a single-component OLET to separate the functions of the charge transport and light-emitting layers, thus making the challenge to essentially integrate the high mobility and emissive functions within a single organic semiconductor in a conventional OLET or multilayer OLET unnecessary. Influence of material parameters on 2D-martensitic transformation based on the phase-field finite-element method. Here, we report a novel device configuration called the energy transfer organic light-emitting transistor (ET-OLET) that is intended to overcome these challenges. The manipulation of two-dimensional (2D) ferromagnetic materials by spin current is emerging as the central theme of the 2D spintronics research. Yanchen Fan, Shitai Liu, Xiao Han, Rong Xiang, Yongji Gong, Tianshuai Wang, Yu Jing. Key challenges in the development of organic light-emitting transistors (OLETs) are blocking both scientific research and practical applications of these devices, e.g., the absence of high-mobility emissive organic semiconductor materials, low device efficiency, and color tunability. MoS2 by chemical vapor deposition, 2D Materials 7 025020.
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