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吉林大学电子科学与工程学院 集成光电子学国家重点联合实验室, 吉林 长春 130012
Received:25 April 2015,
Revised:10 June 2015,
Published:03 August 2015
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穆晓龄, 曲加伟, 郭永林等. 基于载流子平衡的效率及亮度提高的有机蓝光器件[J]. 发光学报, 2015,36(8): 917-922
MU Xiao-ling, QU Jia-wei, GUO Yong-lin etc. Blue Organic Light-emitting Device with Improved Efficiency and Luminance Based on Carriers Balance[J]. Chinese Journal of Luminescence, 2015,36(8): 917-922
穆晓龄, 曲加伟, 郭永林等. 基于载流子平衡的效率及亮度提高的有机蓝光器件[J]. 发光学报, 2015,36(8): 917-922 DOI: 10.3788/fgxb20153608.0917.
MU Xiao-ling, QU Jia-wei, GUO Yong-lin etc. Blue Organic Light-emitting Device with Improved Efficiency and Luminance Based on Carriers Balance[J]. Chinese Journal of Luminescence, 2015,36(8): 917-922 DOI: 10.3788/fgxb20153608.0917.
研究了在两空穴传输层之间插入Bphen中间层对有机蓝光器件(BOLEDs)效率的影响.结果表明
其对空穴的阻挡作用使得电子与空穴在发光区内达到相对平衡
减少了激子-极化子猝灭几率
从而提高了有机蓝光器件的效率和亮度.器件的最大电流效率从16.12 cd/A增加到20.52 cd/A
相对提高了27.30%;最大功率效率从14.23 lm/W增加到17.64 lm/W
相对提高了23.96%.文中对提高效率的物理机制进行了详细的阐述.
Blue organic light-emitting device (BOLED) with a Bphen interlayer inserted between two hole transport layers was demonstrated. It utilized the hole blocking effect of Bphen interlayer to obtain more balance for electrons and holes in the recombination zone. It reduced the probability of exciton-polaron quenching
thereby improved efficiency and luminance of blue organic light-emitting device. The current efficiency improved about 27.30%
from 16.12 cd/A to 20.52 cd/A
and the power efficiency improved about 23.96% from 14.23 lm/W to 17.64 lm/W. The physical mechanisms on the improvement of efficiency were discussed in detail.
Baldo M A, Thompson M E, Forrest S R. High-efficiency fluorescent organic light-emitting devices using a phosphorescent sensitizer [J]. Nature, 2000, 403(6771):750-753.
Bruner E L, Koch N, Span A R, et al. Controlling the work function of indium tin oxide: Differentiating dipolar from local surface effects [J]. J. Am. Chem. Soc., 2002, 124(13):3192-3193.
Chan I M, Cheng W C, Hong F C. Enhanced performance of organic light-emitting devices by atmospheric plasma treatment of indium tin oxide surfaces [J]. Appl. Phys. Lett., 2002, 80(1):13-15.
Zhang M L, Zhang F H, Zhang W, et al. Luminance performances of phosphorescent organic light-emitting diodes based on different Ir(ppy)2acac doping [J]. Chin. J. Liq. Cryst. Disp.(液晶与显示), 2014, 29(3):328-332 (in Chinese).
Jing S, Wang H, Liu H H, et al. Characteristic of tandem organic light-emitting diodes with charge generation layer of LiF/Al/F4-TCNQ/NPB [J]. Chin. J. Liq. Cryst. Disp.(液晶与显示), 2014, 29(6):886-892 (in Chinese).
Chen F C, Yang Y, Thompson M E, et al. High-performance polymer light-emitting diodes doped with a red phosphorescent iridium complex [J]. Appl. Phys. Lett., 2002, 80(13):2308-2310.
Deng Z B, Ding X M, Lee S T, et al. Enhanced brightness and efficiency in organic electroluminescent devices using SiO2 buffer layers [J]. Appl. Phys. Lett., 1999, 74(15):2227-2229.
Hanson E L, Guo J, Koch N, et al. Advanced surface modification of indium tin oxide for improved charge injection in organic devices [J]. J. Am. Chem. Soc., 2005, 127(28):10058-10062.
Lee H, Hwang Y, Won T. Effect of inserting a hole injection layer in organic light-emitting diodes: A numerical approach [J]. J. Korean Phys. Soc., 2015, 66(1):100-103.
Di C, Yu G, Liu Y, et al. High-efficiency low operation voltage organic light-emitting diodes [J]. Appl. Phys. Lett., 2007, 90(13):133508-1-3.
Xing X, Zhang L, Liu R, et al. A deep-blue emitter with electron transporting property to improve charge balance for organic light-emitting device [J]. ACS Appl. Mater. Inter., 2012, 4(6):2877-2880.
Zhou L,Zheng Y, Deng R, et al. Efficient blue-green and green electroluminescent devices obtained by doping iridium complexes into hole-block material as supplementary light-emitting layer [J]. J. Lumin., 2014, 148:6-9.
Kondakova M E, Pawlik T D, Young R H, et al. High-efficiency, low-voltage phosphorescent organic light-emitting diode devices with mixed host [J]. J. Appl. Phys., 2008, 104(9):094501-1-6.
Adamovich V I, Cordero S R, Djurovich P I, et al. New charge-carrier blocking materials for high efficiency OLEDs [J]. Org. Electron., 2003, 4(2):77-87.
Holmes R J, DAndrade B W, Forrest S R, et al. Efficient, deep-blue organic electrophosphorescence by guest charge trapping [J]. Appl. Phys. Lett., 2003, 83(18):3818-3820.
Kim J Y, Kim N H, Kim J W, et al. Enhancement of external quantum efficiency and reduction of roll-off in blue phosphorescent organic light emitt diodes using TCTA inter-layer [J]. Opt. Mater., 2014, 37:120-124.
Chang C H, Wu Z J, Liang Y H, et al. Aligned energy-level design for decreasing operation voltage of tandem white organic light-emitting diodes [J]. Thin Solid Films, 2013, 548:389-397.
Wang Q, Oswald I W H, Perez M R, et al. Exciton and polaron quenching in doping-free phosphorescent organic light-emitting diodes from a Pt(Ⅱ)-based fast phosphor [J]. Adv. Funct. Mater., 2013, 23(43):5420-5428.
Chiu T L, Lee P Y. Carrier injection and transport in blue phosphorescent organic light-emitting device with oxadiazole host [J]. Int. J. Mol. Sci., 2012, 13(6):7575-7585.
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