Color-saturated and angle-stable blue top-emitting organic light-emitting diodes based on semitransparent bilayer cathode: Theory and experiment
Color-saturated and angle-stable blue top-emitting organic light-emitting diodes based on semitransparent bilayer cathode: Theory and experiment
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基于半透明双层阴极的颜色饱和且角度稳定的蓝色顶发射有机发光二极管：理论与实验
DOI：
10.1016/j.orgel.2012.11.008
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发表时间：
2013
影响因子：
3.2
通讯作者：
Wei Huang
中科院分区：
文献类型：
--
作者：
Linghai Xie;Naien Shi;Bin Liu;Wei Huang
基于改进的电磁理论，设计了由电子注入层和银（Ag）层组成的双层金属阴极，以改善蓝色顶发射有机发光二极管（TEOLED）的色度。详细研究了电子注入材料的复折射率对双层阴极反射率和透射率的影响，然后选择钐（Sm）作为电子注入材料，因为它具有~1.22+1.12i的适当折射率和~2.7eV的功函数。然后，计算并讨论了具有不同Sm/Ag双层阴极的蓝色TEOLED的发射峰值波长、半峰全宽和国际照明委员会坐标。根据理论结果，制备了具有优化的Sm（15nm）/Ag（5nm）双层阴极的蓝色TEOLED。测量结果表明，蓝色TEOLED具有优异的色度，甚至优于底发射有机发光二极管。此外，即使在 0-75° 的大视角变化下，蓝色 TEOLED 也具有出色的角度稳定性。
Based on a modified electromagnetic theory, a bilayer metal cathode consisting of an electron injection layer and a silver (Ag) layer is designed to improve the color chromaticity in blue top-emitting organic light-emitting diodes (TEOLEDs). The effects of the complex refractive index of the electron injection material on the reflectivity and transmittivity of the bilayer cathode are investigated in detail, and then samarium (Sm) is selected as the electron injection material due to its proper refractive index of ∼1.22+1.12i and work function of ∼2.7eV. Then, the emission peak wavelength, the full width at half maximum, and the Commission International de L’Eclairage coordinates of the blue TEOLEDs with different Sm/Ag bilayer cathodes are calculated and discussed. According to the theoretical results, a blue TEOLED with the optimized bilayer cathode of Sm (15nm)/Ag (5nm) is fabricated. The measurement results indicate that the blue TEOLED possesses an excellent chromaticity which is even better than that of a bottom-emitting organic light-emitting diode. Besides, the excellent angle stability is observed in the blue TEOLED even with a large viewing angle change of 0–75°.
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DOI：
10.1016/j.mseb.2005.04.004
发表时间：
2005-08
影响因子：
3.6
作者：
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通讯作者：
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影响因子：
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作者：
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影响因子：
2.1
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DOI：
10.1117/12.869974
发表时间：
2010-11
期刊：
LED AND DISPLAY TECHNOLOGIES
影响因子：
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作者：
Deng, Ling-ling;Chen, Shu-fen;Huang, Wei;Liu, Bin
通讯作者：
Liu, Bin
影响因子：
3.2
作者：
Takahiro Shiga;H. Fujikawa;Y. Taga
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Takahiro Shiga;H. Fujikawa;Y. Taga