BePP<sub>2</sub>沉积速率以及厚度对蓝光OLED性能的影响

安涛; 袁进; 林涛; 高勇

doi:doi:10.3788/gzxb20144301.0123001

光子学报, 2014, 43 (1): 0123001, 网络出版: 2021-08-31

BePP₂沉积速率以及厚度对蓝光OLED性能的影响

Impact of BePP₂ Deposition Rate and Thickness on the Performance of Blue Organic Light-emitting Diode

论文大纲

安涛 ^*袁进林涛高勇

作者单位

西安理工大学,西安 710048

摘要

实验采用真空热蒸镀方法，在高准确度膜厚控制仪的监控下，制备了结构为ITO/2T-NATA(25 nm)/NPB(30 nm)/BePP2(X nm)/Alq3(30 nm)/LiF(0.6 nm)/Al(80 nm)的蓝光器件，并对其发光层（BePP2）薄膜的沉积速率以及厚度对器件的亮度、发光效率影响进行了分析和实验研究.结果表明：当束源炉孔径为Φ1.5 mm，束源炉温度在120℃～150℃区域，BePP2的蒸镀速率比较平滑，斜率变化小，易于膜厚精准控制，且薄膜较致密满足器件需要；BePP2在最佳沉积速率为0.02 nm/s（蒸发温度为135℃），且发光层厚度为35 nm时，可获得启亮电压为5.34 V、发光亮度为9 100 cd/m2、发光效率达4.4 cd/A的较理想蓝光器件.

Abstract

Experiments using the vacuum thermal evaporation methods, under the monitoring of highly accurate film thickness controller, prepared the ITO/2T-NATA(25 nm)/NPB(30 nm)/BePP2(X nm)/Alq3(30 nm)/LiF(0.6 nm)/Al(80 nm)blue organic light-emitting diode structure, analyzed and experimental researched the organic light emitting layer of BePP2 deposition rate and thickness of the organic light emitting diode luminance and luminous efficiency. Experiments show that:When beam source furnace aperture is Φ1.5 mm, beam source furnace temperature is 120℃~150℃, BePP2 evaporation rate is smooth, the slope change is small, easy to film thickness precision control, and the film are denser to meet the needs of the device; when light-emitting layer BePP2 best deposition rate is 0.02 nm/s (evaporation temperature is 135 ℃) , and the thickness of BePP2 is 35 nm, get lights on voltage of 5.34 V, luminescence brightness of 9 100 cd/m2, 4.4 cd/A luminous efficiency of the ideal blue device can be obtained.

参考文献

[1] 贾勇, 邓振波, 肖静, 等. 电子传输层PBD对AIq3:DCJTB电致发光器件的影响［J］. 发光学报, 2008, 29(1): 23-26.

JIA Yong, DENG Zhen-bo, XIAO Jing, et al. The effect of PBD as electron transporting layer in AIq3:DCJTB organic light emitting devices［J］. Chinese Journal of Luminescence, 2008, 29(1): 23-26.

[2] 韩世良, 袁永波, 连加荣, 等. ITO阳极电阻对有机电致发光器件性能的影响［J］. 发光学报, 2008, 29(3): 429-432.

HAN Shi-liang, YUAN Yong-bo, LIAN Jia-rong, et al. The effects of ITO anode resistance on OLEDs performance［J］. Chinese Journal of Luminescence, 2008, 29(3): 429-432.

[3] THOMSCHKE M, NITSCHE R, et al. Optimized efficiency and angular emission characteristics of white top-emitting organic electroluminescent diodes［J］. Applied Physics Letters, 2009, 94(8): 083303-083305.

[4] 崔国宇, 李传南. 采用Li3N n型掺杂层作为电子注入层的OLED器件研究［J］. 光子学报, 2011, 40(2): 194-198.

GUO Guo-yu, LI Chuan-nan. Organic light-emitting device with Li3N n-type doped electron injecting layer［J］. Acta Photonica Sinica, 2011, 40(2): 194-198.

[5] 杨定宇, 蒋孟衡, 涂小强，等. 有机小分子发光材料的研究［J］. 化工新型材料, 2007, 35(11): 4-7.

YANG Ding-yu, JIANG Meng-heng, TU Xiao-qiang, et al. Research on molecular organic electroluminescent［J］. New Chemical Materials, 2007, 35(11): 4-7.

[6] 肖立新, 胡双元, 孔胜, 等. 蓝色荧光小分子电致发光材料［J］. 光学学报, 2010, 30(7): 1895-1903.

XIAO Li-xin, HU Shuang-yuan, KONG Sheng, et al. Small organic molecules for electroluminescence ［J］. Acta Optica Sinica, 2010, 30(7): 1895-1903.

[7] 密保秀, 王海珊, 高志强, 等, 小分子有机电致发光器件和材料的研究及应用［J］. 化学进展, 2011, 23(1): 136-151.

MI Bao-xiu, WANG Hai-shan, GAO Zhi-qiang, et al. Development of devices and materials for small molecular organic light-emitting diodes and hurdles for applications ［J］. Progress in Chemistry, 2011, 23(1): 136-151.

[8] YU Yang, TAI Peng, KAI Qi-ye, et al. High-efficiency and high-quality white organic light-emitting diode employing fluorescent emitters ［J］. Organic Electronics, 2011, 12(1): 29-33.

[9] 陆丹, 郭建华. 吩基吡啶铍(Bepp2)配合物的高效蓝光器件［J］. 发光学报, 2005, 26(2): 237-241.

LU Dan, GUO Jian-hua. Efficient blue electroluminescent devices based on hydroxyphenyl-pyridine beryllium complex［J］.Chinese Journal of Luminescence, 2005, 26(2): 237-241.

[10] 安涛, 夏艳峰. 发光层掺杂对红光OLED性能影响研究［J］. 光子学报, 2013, 42(1): 24-27.

AN Tao, XIA Yan-feng. Hole injection layer effect on red OLED performance［J］. Acta Photonica Sinica, 2013, 42(1): 24-27.

[11] 郭闰达, 王鹏, 陈宇, 等. 一种改善红光顶发射OLED色纯度及角度依赖特性的方法研究［J］. 光子学报, 2013, 42(1): 1-5.

GUO Run-da, WANG Peng, CHEN Yu, et al. A method for improving the color purity and angle-dependent character of red top-emitting organic light-emitting device ［J］. Acta Photonica Sinica, 2013, 42(1): 1-5.

[12] 马凤英, 苏建坡, 程东明, 等. 高效高亮度有机红光微腔发光二极管［J］. 光子学报, 2007, 36(8): 1397-1399.

MA Feng-ying, SU Jian-po, CHENG Dong-ming, et al. High efficiency high brightness red emission microcavity organic light-emitting diodes［J］. Acta Photonica Sinica, 2007, 36(8): 1397-1399.

[13] 姚宁, 李全友, 王英俭, 等. LiF对柔性有机电致发光器件性能的影响［J］. 人工晶体学报, 2009, 38(2): 450-454.

YAO Ning, LI Quan-you, WANG Ying-jian, et al. Impact to flexible organic light emitting devices of LiF［J］. Journal of Synthetic Crystals , 2009, 38(2): 450-454.

[14] OLIVEIRA F A C, CURY L A, RIGHI A, et al. Temperature effects on the vibronic spectra of BEH-PPV conjugated polymer films［J］. The Journal of Chemical Physics, 2003, 119(18): 9777-9782.

[15] 牟强, 张麦丽, 张方辉. Alq3厚度以及沉积速率对OLED性能的影响［J］. 液晶与显示, 2005, 20(6): 508-511.

MU Qiang, ZHANG Mai-li, ZHANG Fang-hui, et al. Effect of thickness and deposit speed on the performance of OLED ［J］. Chinese Journal of Liquid Crystals and Displays , 2005, 20(6): 508-511.

[16] KUMAR A, BHATNAGAR P K, MATHUR P C, et al. Temperature and electric-field dependences of hole mobility in light-emitting diodes based on poly［J］. Journal of Applied Physics , 2005, 98(2): 24502-24504.

安涛, 袁进, 林涛, 高勇. BePP₂沉积速率以及厚度对蓝光OLED性能的影响[J]. 光子学报, 2014, 43(1): 0123001. AN Tao, YUAN Jin, LIN Tao, GAO Yong. Impact of BePP₂ Deposition Rate and Thickness on the Performance of Blue Organic Light-emitting Diode[J]. ACTA PHOTONICA SINICA, 2014, 43(1): 0123001.

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