High-efficiency small-molecule-based organic light emitting devices with solution processes and oxadiazole-based electron transport materials

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题名:	High-efficiency small-molecule-based organic light emitting devices with solution processes and oxadiazole-based electron transport materials
作者:	陳錦地;Chang, Yung-Ting;Chang, Jan-Kai;Lee, Yi-Ting;Wang, Po-Sheng;Wu, Jhao-Lin;Hsu, Che-Chang;Wu, I-Wen;Tseng, Wei-Hsuan;Pi, Tun-Wen;Chen, Chin-Ti;Wu, Chih-I
贡献者:	理學院化學學系
关键词:	aluminum;cathodes;dyes;electron transfer;phosphorescence
日期:	2013-11-13
上传时间:	2026-04-21 14:16:11 (UTC+8)
出版者:	American Chemical Society;United States: American Chemical Society
摘要:	摘要： We demonstrate high-efficiency small-molecule-based white phosphorescent organic light emitting diodes (PHOLEDs) by single-active-layer solution-based processes with the current efficiency of 17.3 cdA‑1 and maximum luminous efficiency of 8.86 lmW‑1 at a current density of 1 mA cm‑2. The small-molecule based emitting layers are codoped with blue and orange phosphorescent dyes. We show that the presence of CsF/Al at cathodes not only improves electron transport in oxadiazole-containing electron transport layers (ETLs), but also facilitates electron injection through the reacted oxadiazole moiety to reduce interface resistance, which results in the enhancement of current efficiency. By selecting oxadiazole-based materials as ETLs with proper electron injection layer (EIL)/cathode structures, the brightness and efficiency of white PHOLEDs are significantly improved. 其他題名： ACS Appl. Mater. Interfaces 出版者： United States: American Chemical Society 出版日期： 2013-11-13 出處： ACS applied materials & interfaces, 2013-11, Vol.5 (21), p.10614-10622 資源來源： American Chemical Society (ACS) - Revues 版權： Copyright © 2013 American Chemical Society 識別號： ISSN: 1944-8244 識別號： ISSN: 1944-8252 識別號： EISSN: 1944-8252 識別號： DOI: 10.1021/am402504g 識別號： PMID: 24138603
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