Improvement in device performance and reliability of organic light-emitting diodes through deposition rate control

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題名:	Improvement in device performance and reliability of organic light-emitting diodes through deposition rate control
作者:	陳錦地;Chen, Chin-Ti;Lee, Jiun-Haw;Chung, Yu-Ting;Lee, Chih-Chien;Liu, Shun-Wei;Wang, Juen-Kai
貢獻者:	理學院化學學系
關鍵詞:	Current efficiency;Deposition;Devices;Diodes;Efficiency;Electric currents;Electric potential;Electrodes;Electron transport;Glass substrates;Light-emitting diodes;Organic light emitting diodes;Photovoltaic cells;Silicon wafers;Solar energy;Studies;Thin films;Voltage
日期:	2014-01-01
上傳時間:	2026-04-21 14:20:27 (UTC+8)
出版者:	Hindawi Publishing Corporation;Cairo, Egypt: Hindawi Publishing Corporation
摘要:	摘要： We demonstrated a fabrication technique to reduce the driving voltage, increase the current efficiency, and extend the operating lifetime of an organic light-emitting diode (OLED) by simply controlling the deposition rate of bis(10-hydroxybenzo[h]qinolinato) beryllium (Bebq2) used as the emitting layer and the electron-transport layer. In our optimized device, 55 nm of Bebq2 was first deposited at a faster deposition rate of 1.3 nm/s, followed by the deposition of a thin Bebq2 (5 nm) layer at a slower rate of 0.03 nm/s. The Bebq2 layer with the faster deposition rate exhibited higher photoluminescence efficiency and was suitable for use in light emission. The thin Bebq2 layer with the slower deposition rate was used to modify the interface between the Bebq2 and cathode and hence improve the injection efficiency and lower the driving voltage. The operating lifetime of such a two-step deposition OLED was 1.92 and 4.6 times longer than that of devices with a single deposition rate, that is, 1.3 and 0.03 nm/s cases, respectively. 出版者： Cairo, Egypt: Hindawi Publishing Corporation 出版日期： 2014-01-01 出處： International Journal of Photoenergy, 2014-01, Vol.2014 (2014), p.1-7 資源來源： Publicly available content database 版權： Copyright © 2014 Shun-Wei Liu et al. 版權： COPYRIGHT 2014 John Wiley & Sons, Inc. 版權： COPYRIGHT 2014 Hindawi Limited 版權： Copyright © 2014 Shun-Wei Liu et al. Shun-Wei Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 識別號： ISSN: 1110-662X 識別號： ISSN: 1687-529X 識別號： EISSN: 1687-529X 識別號： DOI: 10.1155/2014/412084
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