Triplet-triplet annihilation in highly efficient fluorescent organic Light-Emitting Diodes: Current state and future outlook

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

Volumn 373, Issue 2044, 2015, Pages

  Kondakov, Denis Y ^a  

^a DUPONT COMPANY   (United States)

Author keywords

Organic electroluminescence; Quantum efficiency; Triplet fusion; Triplet triplet annihilation; Upconversion

Indexed keywords

EFFICIENCY; ELECTROLUMINESCENCE; FLUORESCENCE; LIGHT; LIGHT EMITTING DIODES; QUANTUM EFFICIENCY;

BLUE PHOSPHORESCENT OLEDS; EFFICIENCY ENHANCEMENT; EMPIRICAL OPTIMIZATION; ORGANIC ELECTRO LUMINESCENCE; ORGANIC LIGHT EMITTING DIODES(OLEDS); THERMALLY ACTIVATED DELAYED FLUORESCENCES; TRIPLET-TRIPLET ANNIHILATION; UP-CONVERSION;

ORGANIC LIGHT EMITTING DIODES (OLED);

EID: 84995581938     PISSN: 1364503X     EISSN: None     Source Type: Journal    
DOI: 10.1098/rsta.2014.0321     Document Type: Review

References (40)

1. Tang CW, VanSlyke SA 1987 Organic electroluminescent diodes. Appl. Phys. Lett. 51, 913-915. (doi:10.1063/1.98799)
2. Böhm E., Pflumm C, Voges F., Flämmich M, Heil H., Büsing A, Parham A, Fortte R, Mujica T. 2009 Novel transport materials for high performance OLEDs. In Proc. 16th Int. Display Workshops Conf., Miyazaki, Japan, 9-11 December 2009. Campbell, CA: Society for Information Display.
3. Rothe C, Werner A, Fadhel O., Limmert M, Canzler TW, Birnstock J. 2009 Improved efficiency and lifetime by tailoring the charge carrier supply in OLEDs. SID Int. Symp. Digest Tech. Papers 40, 495-498. (doi:10.1889/1.3256824)
4. Kondakov DY, Young RH 2010 Variable sensitivity of organic light-emitting diodes to operation-induced chemical degradation: nature of the antagonistic relationship between lifetime and efficiency. J. Appl. Phys. 108, 074513. (doi:10.1063/1.3483251)
5. Burroughes JH, Bradley DDC, Brown AR, Marks R.N., Mackay K., Friend RH, Burns PL, Holmes AB. 1990 Light-emitting diodes based on conjugated polymers. Nature 347, 539-541. (doi:10.1038/347539a0)
6. Tsutsui T. 1997 Progress in electroluminescent devices using molecular thin films. Mater. Res. Bull. 22, 39-45.
7. Kido J, Iizumi Y. 1998 Fabrication of highly efficient organic electroluminescent devices. Appl. Phys. Lett. 73, 2721-2723. (doi:10.1063/1.122570)
8. Liao CH, Lee MT, Tsai C.H., Chen CH. 2005 Highly efficient blue organic light-emitting devices incorporating a composite hole transport layer. Appl. Phys. Lett. 86, 203507/1-203507/3.
9. Okumoto K, Kanno H, Hamaa Y., Takahashi H, Shibata K. 2006 Green fluorescent organic light-emitting device with external quantum efficiency of nearly 10%. Appl. Phys. Lett. 89, 063504.
10. Spindler JP, Begley WJ, Hatwar T.K., Kondakov DY. 2009 High-efficiency fluorescent red-and yellow-emitting OLED devices. SID Int. Symp. Digest Tech. Papers 40, 420-423. (doi:10.1889/ 1.3256804)
11. Deaton JC et al. 2010 E-type delayed fluorescence of a phosphine-supported Cu2(μ-NAr2)2 diamond core: harvesting singlet and triplet excitons in OLEDs. J. Am. Chem. Soc. 132, 9499-9508. (doi:10.1021/ja1004575)
12. Uoyama H, Goushi K, Shizu K., Nomura H, Adachi C. 2012 Highly efficient organic light-emitting diodes from delayed fluorescence. Nature 492, 234-238. (doi:10.1038/nature11687)
13. Segal M, Baldo MA, Holmes R.J., Forrest SR, Soos ZG. 2003 Excitonic singlet-triplet ratios in molecular and polymeric organic materials. Phys. Rev. 68, 075211. (doi:10.1103/ PhysRevB.68.075211)
14. Cao Y, Parker ID, Zhang C, Heeger AJ 1999 Improved quantum efficiency for electroluminescence in semiconducting polymers. Nature 397, 414-417. (doi:10.1038/17087)
15. Wohlgenannt M, Tandon K, Mazumdar S., Ramasesha S, Vardeny ZV. 2001 Formation cross-sections of singlet and triplet excitons in π-conjugated polymers. Nature 409, 494-497. (doi:10.1038/35054025)
16. Tandon K, Ramasesha S, Mazumdar S. 2003 Electron correlation effects in electron-hole recombination in organic lightemitting diodes. Phys. Rev. B 67, 045109. (doi:10. L1103/PhysRevB.67.045109)
17. Monkman AP 2013 Singlet generation from triplet excitons in fluorescent organic light-emitting diodes. ISRNMater. Sci. 2013, 670130. (doi:10.1155/2013/670130)
18. Segal M, Singh M, Rivoire K., Difley S, Van Voorhis T, Baldo MA. 2007 Extrafluorescent electroluminescence in organic light-emitting devices. Nat. Mater. 6, 374-378. (doi:10. 1038/nmat1885)
19. Hochstrasser RM. 1962 Luminescence of organic molecular crystals. Rev. Mod. Phys. 34, 531-550. (doi:10.1103/RevModPhys.34.531)
20. Ganzorig C, Fujihira M. 2002 a possible mechanism for enhanced electrofluorescence emission through triplet-triplet annihilation in organic electroluminescent devices. Appl. Phys. Lett. 81, 3137-3139. (doi:10.1063/1.1515129)
21. Sinha S, Monkman AP 2003 Delayed electroluminescence via triplet-triplet annihilation in light emitting diodes based on poly[2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene vinylene. Appl. Phys. Lett. 82, 4651-4653. (doi:10.1063/1.1588733)
22. 3)/N, N'-di(naphthalen-1-yl)-N, N'diphenyl-benzidine (NPB) bilayers. J. Vac. Sci. Tech. A 22, 1885-1891. (doi:10.1116/ 1.1759347)
23. Wilkinson J, Davis AH, Bussmann K, Long JP 2005 Evidence for charge-carrier mediated magnetic-field modulation of electroluminescence in organic light-emitting diodes. Appl. Phys. Lett. 86, 111109. (doi:10.1063/1.1883322)
24. Popovic ZD, Aziz H. 2005 Delayed electroluminescence in small-molecule-based organic light-emitting diodes: evidence for triplet-triplet annihilation and recombination-center-mediated light-generation mechanism. J. Appl. Phys. 98, 013510. (doi:10.1063/1. 1937472)
25. Kondakov DY. 2007 Characterization of triplet-triplet annihilation in organic light-emitting diodes based on anthracene derivatives. J. Appl. Phys. 102, 114504. (doi:10.1063/ 1.2818362)
26. Kondakov DY. 2009 Role of triplet-triplet annihilation in highly efficient fluorescent devices. J. Soc. Inf. Disp. 17, 137-144. (doi:10.1889/JSID17.2.137)
27. Rothe C, King SM, Monkman AP 2006 Direct measurement of the singlet generation yield in polymer light-emitting diodes. Phys. Rev. Lett. 97, 076602. (doi:10.1103/PhysRevLett. 97.076602
28. Wallikewitz BH, Kabra D, Gelinas S., Friend RH. 2012 Triplet dynamics in fluorescent polymer light-emitting diodes. Phys. Rev. B 85, 045209. (doi:10.1103/PhysRevB.85. 045209)
29. Kondakov DY, Pawlik TD, Hatwar T.K., Spindler JP 2009 Triplet annihilation exceeding spin statistical limit in highly efficient fluorescent organic light-emitting diodes. J. Appl. Phys. 106, 124510. (doi:10.1063/1.3273407)
30. Kondakov DY. 2008 Role of triplet-triplet annihilation in highly efficient fluorescent devices. SID Symp. Digest Tech. Papers 39, 617-620. (doi:10.1889/1.3069738)
31. Kawamura M, Kawamura Y, Mizuki Y., Funahashi M, Kuma H, Hosokawa C. 2010 Highly efficient fluorescent blue OLEDs with efficiency-enhancement layer. SID Symp. Digest Tech. Papers 41, 560-563. (doi:10.1889/1.3500528)
32. Roberts M, King S, Cass M., Pintani M, Coward C, Akino N., Nakajima H, Anryu M. 2011 Excited state interactions in P-OLEDs: implications for efficiency and lifetime. SID Symp. Digest Tech. Papers 42, 820-821. (doi:10.1889/1.3621456)
33. King SM, Cass M, Pintani M., Coward C, Dias FB, Monkman A.P., Roberts M. 2011 The contribution of triplet-triplet annihilation to the lifetime and efficiency of fluorescent polymer organic light emitting diodes. J. Appl. Phys. 109, 074502. (doi:10.1063/1.3561430)
34. Merrifield RE. 1968 Theory of magnetic field effects on the mutual annihilation of triplet excitons. J. Chem. Phys. 48, 4318-4323. (doi:10.1063/1.1669777)
35. Dick B, Nickel B. 1983 Accessibility of the lowest quintet state of organic molecules through triplet-triplet annihilation; an indo ci study. Chem. Phys. 78, 1-16. (doi:10.1016/0301-0104(83)87001-3)
36. Yamada T. 2013 Recent progress on polymer OLED materials. In Proc. In-depth Technology Insight Conf., Seoul, Korea, 2013.
37. Pandey AK, Nunzia JM 2007 Upconversion injection in rubrene/perylene-diimide-heterostructure electroluminescent diodes. Appl. Phys. Lett. 90, 263508. (doi:10.1063/ 1.2752540)
38. Zhang Y, Forrest SR 2012 Triplets contribute to both an increase and loss in fluorescent yield in organic light emitting diodes. Phys. Rev. Lett. 108, 2674041-2674045.
39. Luo Y, Aziz H. 2010 Probing triplet-triplet annihilation zone and determining triplet exciton diffusion length by using delayed electroluminescence. J. Appl. Phys. 107, 094510. (doi:10.1063/1.3410678)
40. Smith MB, Michl J. 2010 Singlet fission. Chem. Rev. 110, 6891-6936. (doi:10.1021/cr1002613)