Journal ArticleDOI
Exciton quenching by diffusion of 2,3,5,6-tetrafluoro-7,7',8,8'-tetra cyano quino dimethane and its consequences on joule heating and lifetime of organic light-emitting diodes.
Priyanka Tyagi,Arunandan Kumar,Lalat Indu Giri,Manas Kumar Dalai,Suneet Tuli,Modeeparampil N. Kamalasanan,Ritu Srivastava +6 more
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TLDR
The effect of F(4)-TCNQ insertion at the anode/hole transport layer (HTL) interface was studied on joule heating and the lifetime of organic light-emitting diodes (OLEDs).Abstract:
In this Letter, the effect of F4-TCNQ insertion at the anode/hole transport layer (HTL) interface was studied on joule heating and the lifetime of organic light-emitting diodes (OLEDs). Joule heating was found to reduce significantly (pixel temperature decrease by about 10 K at a current density of 40 mA/cm2) by this insertion. However, the lifetime was found to reduce significantly with a 1 nm thick F4-TCNQ layer, and it improved by increasing the thickness of this layer. Thermal diffusion of F4-TCNQ into HTL leads to F4-TCNQ ionization by charge transfer, and drift of these molecules into the emissive layer caused faster degradation of the OLEDs. This drift was found to reduce with an increase in the thickness of F4-TCNQ.read more
Citations
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Localized Surface Plasmon Enhanced Organic Light-Emitting Diodes
TL;DR: In this article, the effect of localized surface plasmons on organic emitter was studied using UV-vis absorption spectra, steady state and time-resolved photoluminescence spectra.
Journal ArticleDOI
Efficient halide perovskite light-emitting diodes with emissive layer consisted of multilayer coatings
Run Wang,Ya-Lan Jia,Ding Lei,Ziqian He,Yajie Dong,Xing-Juan Ma,Yue Zhang,Dong-Ye Zhou,Zhi-Xin Zhu,Zu-Hong Xiong,Chun-Hong Gao +10 more
TL;DR: In this article, the effect of multilayer coatings on the electroluminescent performance and the device stability of perovskite light-emitting diodes (PeLEDs) was investigated.
Journal ArticleDOI
Temperature and dopant dependence of hole transport in a green light emitting polyspirobifluorene polymer
TL;DR: In this paper, hole transport in a green light emitting polyspirobiflorene polymer has been studied and hole mobility has been calculated by direct current space charge limited conduction method.
Journal ArticleDOI
Analysis of device performance and thin-film properties of thermally damaged organic light-emitting diodes
Changmin Lee,Won-Ho Lee,Geon-Woo Jeong,Dong Hyun Kim,Dong Hyun Choi,Tae Wook Kim,Amjad Islam,P. Justin Jesuraj,P. Justin Jesuraj,Hassan Hafeez,Hyung Ju Chae,Hyunmin Hong,Kwun-Bum Chung,Sanghyuk Park,Myungkwan Song,Chang Su Kim,Seung Yoon Ryu +16 more
TL;DR: In this article, the variation in the optical and geometrical properties of individual organic layers to be used for thermally damaged top-emission organic light-emitting diodes (TEOLEDs) was reported.
References
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White organic light-emitting diodes with fluorescent tube efficiency
Sebastian Reineke,Frank Lindner,Gregor Schwartz,Nico Seidler,Karsten Walzer,Björn Lüssem,Karl Leo +6 more
TL;DR: An improved OLED structure which reaches fluorescent tube efficiency and focuses on reducing energetic and ohmic losses that occur during electron–photon conversion, which could make white-light OLEDs, with their soft area light and high colour-rendering qualities, the light sources of choice for the future.
Journal ArticleDOI
Enhanced electron injection in organic electroluminescence devices using an Al/LiF electrode
TL;DR: In this article, an ultrathin LiF layer adjacent to an electron-transporting layer and an aluminum outerlayer was used as an electrode for organic electroluminescent devices.
Journal ArticleDOI
Highly efficient organic devices based on electrically doped transport layers.
TL;DR: Most present-day semiconductor devices use inorganic crystalline materials, with single-crystalline silicon dominating other materials like GaAs by about a factor of 1000, but organic semiconductors have recently gained much attention and are already broadly applied as photoconductors for copiers and laser printers.
Journal ArticleDOI
Recent advances in white organic light-emitting materials and devices (WOLEDs).
TL;DR: The types of materials (small molecules and polymers) that have been used to fabricate WOLEDs are described and a range of device architectures are presented and appraised.