Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/39863
Type of publication: Straipsnis Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or / and Scopus (S1)
Field of Science: Medžiagų inžinerija / Materials engineering (T008)
Author(s): Jou, Jwo-Huei;Wang, Wei-Ben;Shen, Shih-Ming;Kumar, Sudhir;Lai, I-Ming;Shyue, Jing-Jong;Lengvinaitė, Simona;Žostautienė, Rasa;Gražulevičius, Juozas Vidas;Grigalevičius, Saulius;Chen, Sun-Zen;Wu, Chung-Chih
Title: Highly efficient blue organic light-emitting diode with an oligomeric host having high triplet-energy and high electron mobility
Is part of: Journal of materials chemistry. Cambridge : The Royal Society of Chemistry, 2011, Vol. 21, iss. 26
Extent: p. 9546-9552
Date: 2011
Abstract: We report a high-efficiency blue organic light-emitting diode (OLED) with a solution-processed emissive layer composed of an oligomeric host of poly[3-(carbazol-9-ylmethyl)-3-methyloxetane] (PCMO) that possesses high triplet-energy and high electron mobility. The device exhibited a current efficiency of 40.4 cd A(-1) with an external quantum efficiency (EQE) of 21.6% and power efficiency of 28.2 lm W(-1) at 230 cd m(-2) or 24.7 cd A(-1), 10.3%, and 15.5 lm W(-1) at 1 000 cd m(-2). The high efficiency may be attributed to the host possessing a high electron mobility and lower electron injection barrier, resulting in a more balanced carrier-injection. Moreover, the high electron-mobility favors the transport of electrons, resulting in a more balanced carrier-injection in the emissive layer. The device efficiency has been further enhanced to 42.6 cd A(-1) (22.9%, 29.7 lm W(-1)) at 124 cd m(-2) or 28.8 cd A(-1) (15.4%, 17.8 lm W(-1)) at 1 000 cd m(-2) by pre-heating the emissive solution at an elevated temperature before spin-coating
Internet: https://hdl.handle.net/20.500.12259/39863
Affiliation(s): Kauno technologijos universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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