蓝光激基复合物有机发光材料的研究进展-物理科学与技术研究-CSCIED科技核心评价数据库-手机版

蓝光激基复合物有机发光材料的研究进展

Research progress of blue exciplex-based organic light-emitting materials

ES评分 0 浏览量：993 下载量：0

DOI	10.12208/j.pstr.20220004
刊名	物理科学与技术研究 Physical Sience and Technical Research
年，卷(期)	2022, 2(1)
作者	龚河旗*,李智,张金成,刘辉,郭强,李杰,
作者单位	成都信息工程大学四川成都 ;
摘要	近年来，基于激基复合物的有机发光材料广泛应用于有机发光二极管（OLED），受到学术界和产业界越来越多的关注，尤其是具有热活性延迟荧光（TADF）特性的激基复合物有机发光材料。由于激基复合物的最低激发单重态（S1）和最低激发三重态（T1）之间的能级差（ΔEST）小，T1激子可以通过反向系间窜越（RISC）转变为S1激子，然后辐射出光子，实现TADF发射。激基复合物通常是偏空穴传输性质的给体（D）材料和偏电子传输性质的受体（A）材料之间的物理混合。在光致发光和电致发光过程中，激基复合物可以通过D-A之间的电荷转移（CT），增强发光效率从而提高器件的发光性能。目前，越来越多的激基复合物有机发光材料被应用于OLED，其中发展较快的是绿光和红光激基复合物，而蓝光激基复合物发展缓慢。这主要是因为蓝光激基复合物还存在一些亟待解决的缺陷，例如稳定性较差、器件寿命较短以及发光效率较低。本文对蓝光激基复合物有机发光材料的发光原理、设计原则以及最新进展进行了简要综述，并对其未来发展作出展望。
Abstract	Exciplex-based organic light-emitting materials have received much attention over recent years, especially exciplexes with thermally activated delayed fluorescence (TADF) properties. The energy difference (ΔEST) of an exciplex between the lowest excited singlet state (S1) and the lowest excited triplet state (T1) is usually small. Triplet excitons can be converted to be singlet excitons through reverse intersystem crossing (RISC), and then radiate photons to achieve TADF. An exciplex is a physical mixture between a donor (D) with hole transport properties and an acceptor (A) with electron transport characteristics. In the processes of photoluminescence and electroluminescence, exciplexes can enhance the luminescence efficiencies and subsequently improve the device performance by means of D-A charge transfer (CT). At present, more and more exciplex-based organic light-emitting materials are applied to organic light-emitting diodes (OLEDs). Thereinto, a number of green and red exciplexes are developed, while blue exciplexes are relatively few. This is mainly because there are still some defects to be solved in blue exciplexes, such as poor stability, short device lifetime and low luminous efficiency. In this paper, the luminescence principle, design principle and the latest progress of blue exciplex-based organic luminescent materials are briefly reviewed, and their future development is prospected.
关键词	激基复合物；有机发光材料；延迟荧光；反向系间窜越
KeyWord	Exciplex; Organic light-emitting material; Delayed fluorescence; Reverse intersystem crossing
基金项目
页码	22-31

参考文献
相关文献

[1]Tang C W, VanSlyke S. Organic electroluminescent diodes[J]. Appl Phys Lett, 1987, 51(12): 913-915.

[2]Zhou X,Pfeiffer M,Blochwitz J,et al. Very-low-operating-voltageorganic light-emittingdiodesusingap-dopedamorphousholeinjectionlayer[J].ApplPhys Lett,2001,78(4): 410-412.

[3]Jabbour G E, Kipplen B,Armstrong N R,et al.Alumiumbasedcathodestructure forenhanced electron injection in electroluminescent organic devices[J].ApplPhysLett,1998, 73(9): 1185-1187.

[4]Liu S Q, Li J, Du C L,etal.Evaluation and prediction of color-tunable organic light-emitting diodes based on carrier/exciton adjusting interlayer[J].ApplPhysLett, 2015, 107(4): 041109.

[5]Kim H G, Kim K H, Kim J J, etal. Highly efficient, conventional, fluorescent organic light-emitting diodes with extended lifetime[J]. Adv Mater, 2017, 29(39):1702159.1-1702159.6.

[6]Sohn S, Kim M J, Jung S,et al. Molecular orientation of a new anthracene derivative for highly-efficient blue fluorescence OLEDs[J]. Org Electron, 2015, 24:234-240.

[7]Baldo M A, O'Brien D F, You Y J, et al. Highly efficient phosphorescent emission from organic electroluminescent devices[J]. Nature, 1998, 395(6698):151-154.

[8]ThompsonM E, Lamansky S, Djurovich P, etal. High-efficiency organic electro-phosphorescent devices[J]. IntSoc OptPhoton, 2001, 4105:119-124.

[9]Ha Y, Seo J H, Kim Y K. Toward the saturated red phosphorescence for OLED: new iridium complexesof 2,3-bis(4-fluorophenyl)quinoxaline derivatives[J]. Synthetic Met, 2008, 158(13):548-552.

[10]Ikai M, Tokito S, Sakamoto Y, et al. Highly efficient phosphorescence from organic light-emitting devices with an exciton-block layer[J]. Appl Phys Lett, 2001, 79(2): 156-158.

[11]Kessler F, Watanabe Y, Sasabe H, et al. High-performance pure blue phosphorescent OLED using a novel bis-heteroleptic iridium(III) complex with fluorinated bipyridyl ligands[J]. J Mater Chem C, 2013, 1(6): 1070-1075.

[12]Flämmich M, Frischeisen J, Setz D S, et al. Oriented phosphorescent emitters boost OLED efficiency[J]. Org Electron, 2011, 12(10): 1663-1668.

[13]Ho C L, Li H, Wong W Y. Red to near-infrared organometallic phosphorescent dyes for OLED applications[J]. J Organomet Chem, 2014, 751: 261-285.

[14]Endo A, Ogasawara M, Takahashi A, et al. Thermally activated delayed fluorescence from Sn4+-porphyrin complexes and their application to organic light emitting diodes-a novel mechanism for electroluminescence[J]. Adv Mater, 2009, 21(47): 4802-4806.

[15]Woon K L, Yi C L, Pan K C, et al. Intramolecular Dimerization Quenching of Delayed Emission in Asymmetric D-D′-A TADF Emitters[J]. J Phys Chem C, 2019, 123(19): 12400-12410.

[16]Goushi K, Yoshida K, Sato K, et al. Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion[J]. Nat Photonics, 2012, 6(4): 253-258.

[17]Goushi K, Adachi C. Efficient organic light-emitting diodes through up-conversion from triplet to singlet excited states of exciplexes[J]. Appl Phys Lett, 2012, 101(2): 023306.

[18]Hermann C. The international commission on illumination-CIE: what it is and how it works[C]//symposium-international astronomical union. Camb Univ Press, 2001, 196: 60-68.

[19]Malatong R, Kaiyasuan C, Nalaoh P, et al. Rational design of anthracene-based deep-blue emissive materials for highly efficient deep-blue organic light-emitting diodes with CIEy≤0.05[J]. Dyes Pigments, 2021, 184: 108874.

[20]Wang S, Qiao M, Ye Z, et al. Efficient deep-blue electrofluorescence with an external quantum efficiency beyond 10%[J]. Iscience, 2018, 9: 532-541.

[21]Zhu M, Yang C. Blue fluorescent emitters: design tactics and applications in organic light-emitting diodes[J]. Chem Soc Rev, 2013, 42(12): 4963-4976.

[22]Chen D, Wang Z, Wang D, et al. Efficient exciplex organic light-emitting diodes with a bipolar acceptor[J]. Org Electron, 2015, 25: 79-84.

[23]Sarma M, Wong K T. Exciplex: an intermolecular charge-transfer approach for TADF[J]. ACS Appl Mater Inter, 2018, 10(23): 19279-19304.

[24]Bichenkova E V, Sardarian A, Savage H E, et al. An exciplex-based, target-assembled fluorescence system with inherently low background to probe for specific nucleic acid sequences[J]. Assay Drug Dev Techn, 2005, 3(1): 39-46.

[25]Kim H B, Kim J J. Recent progress on exciplex-emitting OLEDs[J]. J Inform Display, 2019, 20(3): 105-121.

[26]Kattnig D R, Rosspeintner A, Grampp G. Magnetic field effects on exciplex-forming systems: the effect on the locally excited fluorophore and its dependence on free energy[J]. Phys Chem Chem Phys, 2011, 13(8): 3446-3460.

[27]Gould I R, Farid S, Young R H. Relationship between exciplex fluorescence and electron transfer in radical ion pairs[J]. J Photochem Photobio A: Chem, 1992, 65: 133-147.

[28]Heissenbüttel M C, Marauhn P, Deilmann T, et al. Nature of the excited states of layered systems and molecular excimers: Exciplex states and their dependence on structure[J]. Phys Rev B, 2019, 99(3): 035425.

[29]Zhang M, Zheng C J, Lin H, et al. Thermally activated delayed fluorescence exciplex emitters for high-performance organic light-emitting diodes[J]. Mater Horiz, 2021, 8(2): 401-425.

[30]Jankus V, Chiang C J, Dias F, et al. Deep blue exciplex organic light-emitting diodes with enhanced efficiency; P-type or E-type triplet conversion to singlet excitons?[J]. Adv Mater, 2013, 25(10): 1455-1459.

[31]Park Y S, Kim K H, Kim J J. Efficient triplet harvesting by fluorescent molecules through exciplexes for high efficiency organic light-emitting diodes[J]. Appl Phys Lett, 2013, 102(15): 66.

[32]Hung W Y, Fang G C, Lin S W, et al. The first tandem, all-exciplex-based WOLED[J]. Sci Rep, 2014, 4(1): 1-6.

[33]Zhang T, Zhao B, Chu B, et al. Simple structured hybrid WOLEDs based on incomplete energy transfer mechanism: from blue exciplex to orange dopant[J]. Sci Rep, 2015, 5(1): 1-8.

[34]Oh C S, Kang Y J, Jeon S K, et al. High efficiency exciplex emitters using donor-acceptor type acceptor material[J]. J Phys Chem C, 2015, 119(39): 22618-22624.

[35]Chen Z, Liu X K, Zheng C J, et al. High performance exciplex-based fluorescence-phosphorescence white organic light-emitting device with highly simplified structure[J]. Chem Mater, 2015, 27(15): 5206-5211.

[36]Mamada M, Tian G, Nakanotani H, et al. The importance of excited-state energy alignment for efficient exciplex systems based on a study of phenylpyridinato boron derivatives[J]. Angew Chem, 2018, 130(38): 12560-12564.

[37]Feng D, Dong D, Lian L, et al. High efficiency non-doped white organic light-emitting diodes based on blue exciplex emission[J]. Org Electron, 2018, 56: 216-220.

[38]Chapran M, Pander P, Vasylieva M, et al. Realizing 20% external quantum efficiency in electroluminescence with efficient thermally activated delayed fluorescence from an exciplex[J]. ACS Appl Mater Inter, 2019, 11(14): 13460-13471.

[39]Nguyen T B, Nakanotani H, Hatakeyama T, et al. The role of reverse intersystem crossing using a TADF-type acceptor molecule on the device stability of exciplex-based organic light-emitting diodes[J]. Adv Mater, 2020, 32(9): 1906614.

[40]Jeon S K, Lee J Y. Highly efficient exciplex organic light-emitting diodes by exciplex dispersion in the thermally activated delayed fluorescence host[J]. Org Electron, 2020, 76: 105477.

[41]Li J, Gong H, Zhang J, et al. Efficient exciplex-based deep-blue organic light-emitting diodes employing a bis (4-fluorophenyl) amine-substituted heptazine acceptor[J]. Molecules, 2021, 26(18): 5568.

引用本文

龚河旗*,李智,张金成,刘辉,郭强,李杰. 蓝光激基复合物有机发光材料的研究进展 [J]. 物理科学与技术研究. 2022; 2; (1). 22 - 31.

文献评论

相关学者

相关机构