High-Efficiency Single-Component Organic Light-Emitting Transistors.
Construction of high-performance organic light-emitting transistors (OLETs) remains challenging due to the limited desired organic semiconductor materials. Here, two superior high mobility emissive organic semiconductors, 2,6-diphenylanthracene (DPA) and 2,6-di(2-naphthyl) anthracene (dNaAnt), are introduced into the construction of OLETs. By optimizing the device geometry for balanced ambipolar efficient charge transport and using high-quality DPA and dNaAnt single crystals as active layers, high-efficiency single-component OLETs are successfully fabricated, with the demonstration of strong and spatially controlled light emission within both p- and n- conducting channels and output of high external quantum efficiency (EQE). The obtained EQE values in current devices are approaching 1.61% for DPA-OLETs and 1.75% for dNaAnt-based OLETs, respectively, which are the highest EQE values for single-component OLETs in the common device configuration reported so far. Moreover, high brightnesses of 1210 and 3180 cd m-2 with current densities up to 1.3 and 8.4 kA cm-2 are also achieved for DPA- and dNaAnt-based OLETs, respectively. These results demonstrate the great potential applications of high mobility emissive organic semiconductors for next-generation rapid development of high-performance single-component OLETs and their related organic integrated electro-optical devices.
['Qin|Zhengsheng|Z|', 'Gao|Haikuo|H|', 'Liu|Jinyu|J|', 'Zhou|Ke|K|', 'Li|Jie|J|', 'Dang|Yangyang|Y|', 'Huang|Le|L|', 'Deng|Huixiong|H|', 'Zhang|Xiaotao|X|', 'Dong|Huanli|H|', 'Hu|Wenping|W|https://orcid.org/0000-0001-5686-2740']
organic light-emitting transistors organic semiconductors high mobility high efficiency single component strong emission