Reduced threshold of optically pumped amplified spontaneous emission and narrow linewidth electroluminescence at cutoff wavelength from bilayer organic waveguide devices

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/104113

Title:	Reduced threshold of optically pumped amplified spontaneous emission and narrow linewidth electroluminescence at cutoff wavelength from bilayer organic waveguide devices
Authors:	陳啟昌;Chang, Jui-Fen;Huang, Yu-Syuan;Chen, Po-Ting;Kao, Ruei-Lin;Lai, Xuan-You;Chen, Chii-Chang;Lee, Cheng-Chung
Contributors:	理學院光電科學與工程學系
Date:	2015-06-01
Issue Date:	2026-04-23 11:43:49 (UTC+8)
Publisher:	United States: Optica Publishing Group
Abstract:	摘要： We present a detailed study of the optically and electrically pumped emission in the BSB-Cz/PVK bilayer waveguide devices. By optical pumping we demonstrate that PVK as a spacer between fluorescent BSB-Cz and ITO electrode allows the significant reduction of the threshold for amplified spontaneous emission (ASE) of BSB-Cz. The simulation provides a better understanding of how the PVK thickness affects the waveguide mode field distribution and hence the ASE threshold of BSB-Cz. On the other hand, the BSB-Cz/PVK bilayer OLED exhibits the external quantum efficiency of >1% and anisotropic electroluminescence with spectrally narrowed edge emission at the cutoff wavelength controlled by the BSB-Cz thickness. When tuning the cutoff wavelength to match the peak gain of BSB-Cz, we demonstrate an intense, particularly narrow edge emission (~5 nm) without obvious degradation of efficiency at a high current density of 1000 mA/cm , suggesting a reliable device performance for high-power applications and further exploration of electrically-pumped ASE. 其他題名： Opt Express 出版者： United States: Optica Publishing Group 出版日期： 2015-06-01 出處： Optics Express, 2015-06, Vol.23 (11), p.14695--14706 資源來源： Optica Publishing Group Journals 識別號： ISSN: 1094-4087 識別號： EISSN: 1094-4087 識別號： DOI: 10.1364/oe.23.014695 識別號： PMID: 26072828
Appears in Collections:	[Department of Optics and Photonics] journal & Dissertation

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