DataVXACS Applied Materials & InterfacesPaper
journal article·2016-04-27

Simple-Structured Phosphorescent Warm White Organic Light-Emitting Diodes with High Power Efficiency and Low Efficiency Roll-off

Jiaxiu Wang, Jiangshan Chen, Xianfeng Qiao, Saad M. Alshehri, Tansir Ahamad, Dongge Ma

ACS Applied Materials & Interfaces· Volume 8· Issue 16
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Source abstract

Abstract

We present phosphorescent WOLEDs fabricated simply by inserting an ultrathin nondoped orange layer within the blue emissive zone, where an efficient exciplex system is applied as the host. The resulting WOLED shows maximum power efficiency of 75.3 and 63.1 lm/W at the luminance of 1000 cd/m(2). The exciton density profile in the emitting layer, the operational mechanism and the quenching process at high luminance are systematically investigated by experimental and theoretical methods, from which it is concluded that the efficient utilization of excitons via exciplex host and the wide recombination zone are the key factors for the prominent achievement of high efficiency and greatly reduced efficiency roll-off.
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Research context

OpenAlex topics: Organic Light-Emitting Diodes Research · Organic Electronics and Photovoltaics · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, University of Chinese Academy of Sciences, Changchun 130022, People’s Republic of China

Department of Chemistry, King Saud University, Riyadh, Kingdom of Saudi Arabia

State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, People’s Republic of China

Funding

Ministry of Science and Technology of the People's Republic of China · King Saud University · National Natural Science Foundation of China · Jilin Province

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