高效溶液法制备延迟荧光电致发光器件研究

doi:10.7517/j.issn.1674-0475.2015.04.292

影像科学与光化学 ›› 2015, Vol. 33 ›› Issue (4): 292-299.DOI: 10.7517/j.issn.1674-0475.2015.04.292

高效溶液法制备延迟荧光电致发光器件研究

谢莉莎^1,2, 王会², 孟令强², 陈必强¹, 王鹰²

1. 北京化工大学生命科学与技术学院, 北京 100029;
2. 中国科学院理化技术研究所光化学转换功能材料重点实验室, 北京 100190

收稿日期:2015-03-04 修回日期:2015-04-03 出版日期:2015-07-16 发布日期:2015-07-16
通讯作者: 陈必强, 王鹰

High Efficiency Thermally Activated Delayed Fluorescence Devices Based on Solution-processed

XIE Lisha^1,2, WANG Hui², MENG Lingqiang², CHEN Biqiang¹, WANG Ying²

1. College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029;
2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190

Received:2015-03-04 Revised:2015-04-03 Online:2015-07-16 Published:2015-07-16

摘要/Abstract

摘要：

本文以2-[对-N,N-二苯基氨基-苯基]-S-二氧硫杂蒽酮(TXO-TPA)为发光材料, 4,4',4"-三(9-咔唑基)三苯胺(TCTA) 为主体材料, 通过溶液法与真空蒸镀相结合的工艺,制备了高效延迟荧光型电致发光器件。为了考察不同电子传输材料对器件性能的影响,分别选取TmPyPB、TPBI、BCP、Alq₃作为电子传输层制备器件,并对器件的性能进行系统的研究。结果表明:由于1,3,5-三(1-苯基-1H-苯并咪唑-2-基)苯(TPBI)具有合适的HOMO/LUMO能级、高的电子迁移率以及高的三重态能级,利于电子的传输和激子的阻挡,以其为电子传输层的器件显示出最佳的性能,器件的开启电压低至3.6 V,电流效率达到16.2 cd/A,最大的EQE达到5.97%。

关键词: 溶液法, 延迟荧光器件, 电子传输层, 有机发光二极管

Abstract:

Solution processed thermally activated delayed fluorescence (TADF) light-emitting diodes have been fabricated with a yellow TADF material TXO-TPA as the guest and TCTA as the host, by combining the spin-coating method and vaccum deposition method in the device fabrication process. With the purpose of investigating the effect of electron-transporting material on device performance, we selected electron-transporting material from TmPyPB, TPBI,BCP and Alq₃. By optimizing the device structure, high efficiency yellow TADF OLEDs by using TPBI as the electron-transporting material have been achieved. The excellent performance of TPBI can be attributed to its suitable HOMO/LUMO energy level, a high electron mobility and triplet energy level which favors electron transporting and triplet exciton blocking.The device using TPBI as an electron transporting material exhibited excellent performance with low drive voltage of 3.6 V, maximum current efficiency of 16.2 cd/A, EQE of 5.97%.

Key words: solution-processed method, thermally activated delayed fluorescence devices, electron-transporting layer, organic light emitting diodes

谢莉莎, 王会, 孟令强, 陈必强, 王鹰. 高效溶液法制备延迟荧光电致发光器件研究[J]. 影像科学与光化学, 2015, 33(4): 292-299.

XIE Lisha, WANG Hui, MENG Lingqiang, CHEN Biqiang, WANG Ying. High Efficiency Thermally Activated Delayed Fluorescence Devices Based on Solution-processed[J]. Imaging Science and Photochemistry, 2015, 33(4): 292-299.

参考文献

[1] Tang C W, Vanslyke S A. Organic electroluminescent diodes[J]. Applied physics letters, 1987,51(12): 913-915.
[2] Rothberg L J, Lovinger A J. Status of and prospects for organic electroluminescence[J]. Journal of Materials Research, 1996, 11(12): 3174-3187.
[3] Adachi C, Baldo M A, Thompson M E, Forrest S R. Nearly 100% internal phosphorescence efficiency in an organic light-emitting device[J]. Journal of Applied Physics, 2001, 90(10): 5048-5051.
[4] Udagawa K, Sasabe H, Cai C, Kido J. Low-driving-voltage blue phosphorescent organic light-emitting devices with external quantum efficiency of 30%[J]. Advanced Materials, 2014, 26(29): 5062-5066.
[5] Yook K S, Lee J Y. Organic materials for deep blue phosphorescent organic light-emitting diodes[J]. Advanced Materials, 2012, 24(24): 3169-3190.
[6] Xiao L X, Chen Z J, Qu B, Luo J X, Kong S, Gong Q H, Kido J. Recent progresses on materials for electrophosphorescent organic light-emitting devices[J]. Advanced Materials, 2011, 23(8): 926-952.
[7] Deaton J C, Switalski S C, Kondakov D Y, Young R H, Pawlik T D, Giesen D J, Harkins S B, Miller A J M, Micken-berg S F, Peters J C. E-type delayed fluorescence of a phosphine-supported Cu₂(μ-NAr₂)₂ diamond core: harvesting singlet and triplet exactions in OLEDs[J]. Journal of the American Chemical Society, 2010, 132(27): 9499-9508.
[8] Kondakov D Y, Pawlik T D, Hatwar T K, Spindler J P. Triplet annihilation exceeding spin statistical limit in highly efficient fluorescent organic light-emitting diodes[J]. Journal of Applied Physics, 2009, 106(12): 124510.
[9] Goushi K, Yoshida K, Sato K, Adachi C. Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion[J]. Nature Photonics, 2012, 6(4): 253-258.
[10] 吴世康,有机发光二极管中三重态激子的单重态转换[J].影像科学与光化学,2014, 32(3): 217-237. Wu S K. The triplet state conversion to singlet excited state in OLED[J]. Imaging Science and Photochemistry, 2014, 32(3): 217-237.
[11] Uoyama H, Goushi K, Shizu K, Nomura H, Adachi C. Highly efficient organic light-emitting diodes from delayed fluorescence[J]. Nature, 2012, 492(7428): 234-238.
[12] Zhang Q S, Li J, Shizu K, Huan S P, Hirata S, Miyazaki H, Adachi C. Design of efficient thermally activated delayed fluorescence materials for pure blue organic light emitting diodes[J]. Journal of the American Chemical Society, 2012, 134(36): 14706-14709.
[13] Méhes G, Nomura H, Zhang Q S, Nakagawa T, Adachi C. Enhanced electroluminescence efficiency in a spiro-acridine derivative through thermally activated delayed fluorescence[J]. Angewandte Chemie International Edition, 2012,51(45): 11311-11315.
[14] Goushi K, Adachi C. Efficient organic light-emitting diodes through up-conversion from triplet to singlet excited states of exciplexes[J]. Applied Physics Letters, 2012, 101(2): 023306.
[15] Nakagawa T, Ku S Y, Wong K T, Adachi C. Electroluminescence based on thermally activated delayed fluorescence generated by a spirobifluorene donor-acceptor structure[J]. Chemical Communications, 2012, 48(77): 9580-9582.
[16] Lee S Y, Yasuda T, Nomura H, Adachi C. High-efficiency organic light-emitting diodes utilizing thermally activated delayed fluorescence from triazine-based donor acceptor hybrid molecules[J]. Applied Physics Letters, 2012,101(9): 093306.
[17] Li J, Nakagawa T, MacDonald J, Zhang Q S, Nomura H, Miyazaki H, Adachi C. Highly efficient organic light-emitting diode based on a hidden thermally activated delayed fluorescence channel in a heptazine derivative[J]. Advanced Materials, 2013, 25(24): 3319-3323.
[18] Zhang Q S, Li B, Huang S P, Nomura H, Tanaka H, Adachi C. Efficient blue organic light-emitting diodes employing thermally activated delayed fluorescence[J]. Nature Photonics, 2014, 8(4): 326-332.
[19] Kim B S, Lee J Y. Engineering of mixed host for high external quantum efficiency above 25% in green thermally activated delayed fluorescence device[J]. Advanced Functional Materials, 2014, 24(25): 3970-3977.
[20] Cho Y J, Yook K S, Lee J Y. A universal host material for high external quantum efficiency close to 25% and long lifetime in green fluorescent and phosphorescent OLEDs[J]. Advanced Materials, 2014,26(24): 4050-4055.
[21] Wang H, Xie L S, Peng Q, Meng L Q, Wang Y, Yi Y P, Wang P. Novel thermally activated delayed fluorescence materials thioxanthone derivatives and their applications for highly efficient OLEDs[J]. Advanced Materials, 2014, 26(30): 5198-5204.
[22] Chopra N, Lee J, Zheng Y, Eom S H, Xue J G, So F. Effect of the charge balance on high-efficiency blue-phosphorescent organic light-emitting diodes[J]. ACS Applied Materials & Interfaces, 2009, 1(6): 1169-1172.

高效溶液法制备延迟荧光电致发光器件研究

High Efficiency Thermally Activated Delayed Fluorescence Devices Based on Solution-processed

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