High-Efficiency Single-Component Organic Light-Emitting Transistors

Zhengsheng Qin; Haikuo Gao; Jinyu Liu; Ke Zhou; Jie Li; Yangyang Dang; Le Huang; Huixiong Deng; Xiaotao Zhang; Huanli Dong; Wenping Hu

doi:10.1002/adma.201903175

High-Efficiency Single-Component Organic Light-Emitting Transistors

Adv Mater. 2019 Sep;31(37):e1903175. doi: 10.1002/adma.201903175. Epub 2019 Aug 5.

Authors

Zhengsheng Qin^{1

2}, Haikuo Gao^{1

2}, Jinyu Liu^{1

2}, Ke Zhou^{1

2}, Jie Li^{1

2

3}, Yangyang Dang³, Le Huang⁴, Huixiong Deng⁴, Xiaotao Zhang³, Huanli Dong¹, Wenping Hu^{1

3}

Affiliations

¹ Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
² University of Chinese Academy of Sciences, Beijing, 100049, China.
³ Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China.
⁴ State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, University of Chinese Academy of Sciences, Beijing, 100083, China.

PMID: 31379034
DOI: 10.1002/adma.201903175

Abstract

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.

Keywords: high efficiency; high mobility; organic light-emitting transistors; organic semiconductors; single component; strong emission.

Abstract

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