Year

2017

Type(s)

Journal Article

Author(s)

Pereira, D.D.S. and Dos Santos, P.L. and Ward, J.S. and Data, P. and Okazaki, M. and Takeda, Y. and Minakata, S. and Bryce, M.R. and Monkman, A.P.

Source

Scientific Reports, 7(1), 2017

Url

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025830289&doi=10.1038%2fs41598-017-06568-3&partnerID=40&md5=9a5b5f20bed96a9b7632ca76af3bef75

BibTeX

BibTeX

BibTeX

@ARTICLE{Pereira2017, author={Pereira, D.D.S. and Dos Santos, P.L. and Ward, J.S. and Data, P. and Okazaki, M. and Takeda, Y. and Minakata, S. and Bryce, M.R. and Monkman, A.P.}, title={An optical and electrical study of full thermally activated delayed fluorescent white organic light-emitting diodes}, journal={Scientific Reports}, year={2017}, volume={7}, number={1}, doi={10.1038/s41598-017-06568-3}, art_number={6234}, note={cited By 28}, url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025830289&doi=10.1038%2fs41598-017-06568-3&partnerID=40&md5=9a5b5f20bed96a9b7632ca76af3bef75}, affiliation={Physics Department, Durham University, South Road, Durham, DH1 3LE, United Kingdom; Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, United Kingdom; Centre of Polymer and Carbon Materials, Polish Academy of Science, M. Curie-Sklodowskiej 34, Zabrze, 41-819, Poland; Faculty of Chemistry, Silesian University of Technology, M. Strzody 9, Gliwice, 44-100, Poland; Department of Applied Chemistry, Graduate School of Engineering Osaka University, Yamadaoka 2-1, Suita Osaka, 565-0871, Japan}, abstract={We report on the engineering of full thermally activated delayed fluorescence - based white organic light emitting diodes (W-OLEDs) composed of three emitters (2,7-bis(9,9-dimethyl-acridin-10-yl)-9,9-dimethylthioxanthene-S,S-dioxide (DDMA-TXO2), 2,7-bis(phenoxazin-10-yl)-9,9-dimethylthioxanthene-S,S-dioxide (DPO-TXO2) and 3,11-di(10H-phenoxazin-10-yl)dibenzo[a,j]phenazine (POZ-DBPHZ) in two different hosts. By controlling the device design through the study of the emission of DDMA-TXO2 and DPO-TXO2, the behaviour of POZ-DBPHZ in a device with more than one emitter, and the combination of the three materials, respectively, we show that external quantum efficiencies as high as 16% can be obtained for a structure with a correlated colour temperature close to warm white, together with colour rendering index close to 80. However it is in their performance stability that provides the true breakthrough: at 1000 cd/m2 the efficiencies were still above 10%, which is one of the best for this type of devices. © 2017 The Author(s).}, funding_details={Japan Prize FoundationJapan Prize Foundation}, funding_details={Engineering and Physical Sciences Research CouncilEngineering and Physical Sciences Research Council, EPSRC, EP/L02621X/1, EP/K016164/1}, funding_details={DF 70040-020, 12027/13-8}, funding_details={Japan Society for the Promotion of ScienceJapan Society for the Promotion of Science, JSPS, JP15H00997}, funding_details={Ministry of Education, Culture, Sports, Science and TechnologyMinistry of Education, Culture, Sports, Science and Technology, MEXT}, funding_details={European CommissionEuropean Commission, EC}, funding_details={Ministry of Education, Culture, Sports, Science and TechnologyMinistry of Education, Culture, Sports, Science and Technology, MEXT}, funding_details={659288}, funding_details={Horizon 2020 Framework ProgrammeHorizon 2020 Framework Programme, H2020, 674990}, funding_text 1={The authors would like to acknowledge the EXCILIGHT project funded by the European Union's Horizon 2020 Research and Innovation Programme under grant agreement No. 674990 and EPSRC grant EP/K016164/1. J. S. Ward thanks EPSRC grant EP/L02621X/1 for funding. P. L. dos Santos thanks CAPES Foundation, Ministry of Education of Brazil, Brasilia - DF 70040-020, Brazil, in particular the Science Without Borders Program for a Ph.D. studentship, Proc. 12027/13-8. This work was partly supported by the Open Partnership Joint Projects of JSPS (Japan Society for the Promotion of Science) Bilateral Joint Research Projects (to SM), by a Grant-in-Aid for Scientific Research on Innovative Areas "?-System Figuration: Control of Electron and Structural Dynamism for Innovative Functions" (JSPS KAKENHI Grant Number JP15H00997, to YT) from the MEXT (Ministry of Education, Culture, Science and Technology, Japan), and by the Research Grant from the Japan Prize Foundation (to YT). P.D. thanks the EU for a Marie Curie Fellowship H2020 research and innovation programme under grant agreement No. 659288.}, references={Tang, C.W., VanSlyke, S.A., Organic electroluminescent diodes (1987) Appl. Phys. Lett., 51, pp. 913-915; Tremblay, J.-F., The rise of OLED displays (2016) C&EN, , http://cen.acs.org/articles/94/i28/rise-OLED-displays.html, (Accessed: 1st December 2016); Reineke, S., Thomschke, M., Lüssem, B., Leo, K., White organic light-emitting diodes: Status and perspective (2013) Rev. Mod. Phys., 85, pp. 1245-1293; Pereira, D., Pinto, A., California, A., Gomes, J., Pereira, L., Control of a white organic light emitting diode's emission parameters using a single doped RGB active layer (2016) Mater. Sci. Eng. B, 211, pp. 156-165; Xue, M.M., De novo design of boron-based host materials for highly efficient blue and white phosphorescent OLEDs with low efficiency roll-off (2016) ACS Appl. Mater. Interfaces, 8, pp. 20230-20236; Udagawa, K., Sasabe, H., Igarashi, F., Kido, J., Simultaneous realization of high EQE of 30%, low drive voltage, and low efficiency roll-off at high brightness in blue phosphorescent OLEDs (2016) Adv. Opt. Mater., 4, pp. 86-90; Du, M., Novel emitting system based on a multifunctional bipolar phosphor: An effective approach for highly efficient warm-white light-emitting devices with high color-rendering index at high luminance (2016) Adv. Mater., 28, pp. 5963-5968; Hung, W.-Y., The first tandem, all-exciplex-based WOLED (2014) Sci. Rep., 4, pp. 4-9; Baryshnikov, G.V., Nine-ring angular fused biscarbazoloanthracene displaying a solid state based excimer emission suitable for OLED application (2016) J. Mater. Chem. C, 4, pp. 5795-5805; Chen, F.P., White organic light-emitting diodes based on electroplex from polyvinyl carbazole and carbazole oligomers blends (2010) Chinese Phys. B, 19, p. 37801; Mo, H.W., Color tuning of avobenzone boron difluoride as an emitter to achieve full-color emission (2016) Adv. Funct. Mater., 26, pp. 6703-6710; Lee, Y.-T., Chang, Y.-T., Chen, C.-T., Chen, C.-T., The first aggregation-induced emission fluorophore as a solution processed host material in hybrid white organic light-emitting diodes (2016) J. Mater. Chem. C, 4, pp. 7020-7025; Ryu, S.Y., Optical efficiency enhancement in white organic light-emitting diode display with high color gamut using patterned quantum dot film and long pass filter and fluorescence Optical efficiency enhancement in white organic light-emitting diode display with h (2016) Jpn. J. Appl. Phys., 55, p. 08RF01; Jaadene, I., Retinal damage induced by commercial light emitting Diodes (LED) (2015) Free Radic. Biol. Med., 84, pp. 373-384; Duffy, J.F., Czeisler, C.A., Effect of light on human circadian physiology (2009) Sleep. Med. Clin., 4, pp. 165-177; Behar-Cohen, F., Light-emitting diodes (LED) for domestic lighting: Any risks for the eye? (2011) Prog. Retin. Eye Res., 30, pp. 239-257; Wilkinson, F., Horrocks, A.R., (1968) Luminescence in Chemistry, pp. 116-153. , (Van Nostrand); Uoyama, H., Goushi, K., Shizu, K., Nomura, H., Adachi, C., Highly efficient organic light-emitting diodes from delayed fluorescence (2012) Nature, 492, pp. 234-238; Gibson, J., Monkman, A.P., Penfold, T.J., The importance of vibronic coupling for efficient reverse intersystem crossing in thermally activated delayed fluorescence molecules (2016) Chem. Phys. Chem, 17, pp. 2956-2961; Graves, D., Jankus, V., Dias, F.B., Monkman, A., Photophysical investigation of the thermally activated delayed emission from films of m-MTDATA:PBD exciplex (2014) Adv. Funct. Mater., 24, pp. 2343-2351; Ward, J.S., The interplay of thermally activated delayed fluorescence (TADF) and room temperature organic phosphorescence in sterically-constrained donor-acceptor charge-transfer molecules (2016) Chem. Commun., 52, pp. 2612-2615; Dias, F.B., The role of local triplet excited states in thermally-activated delayed fluorescence: Photophysics and devices (2016) Adv. Sci., 3, p. 1600080; Etherington, M.K., Revealing the spin-vibronic coupling mechanism of thermally activated delayed fluorescence (2016) Nat. Commun., 7, p. 13680; Wu, Z., Management of singlet and triplet excitons: A universal approach to high-efficiency all fluorescent WOLEDs with reduced efficiency roll-off using a conventional fluorescent emitter (2016) Adv. Opt. Mater., 4, pp. 1067-1074; Lee, S.E., Efficient triplet harvesting of hybrid white organic light-emitting diodes using thermally activated delayed fluorescence green emitter (2016) J. Photonics Energy, 6, p. 42507; Nishide, J., Nakanotani, H., Hiraga, Y., Adachi, C., High-efficiency white organic light-emitting diodes using thermally activated delayed fluorescence (2014) Appl. Phys. Lett., 104, p. 233304; Duan, C., Multi-dipolar chromophores featuring phosphine oxide as joint acceptor: A new strategy toward high-efficiency blue thermally activated delayed fluorescence dyes (2016) Chem. Mater., 28, pp. 5667-5679; Liu, Z., Simple-structure organic light emitting diodes: Exploring the use of thermally activated delayed fluorescence host and guest materials (2017) Org. Electron., 41, pp. 237-244; Yu, Y., Fluorinated 9,9[prime or minute]-bianthracene derivatives with twisted intramolecular charge-transfer excited states as blue host materials for high-performance fluorescent electroluminescence (2014) J. Mater. Chem. C, 2, pp. 9375-9384; Liu, W., High performance all fluorescence white organic light emitting devices with A highly simplified structure based on thermally activated delayed fluorescence dopants and host (2016) ACS Appl. Mater. Interfaces, 8, pp. 32984-32991; Dos Santos, P.L., Ward, J.S., Bryce, M.R., Monkman, A.P., Using guest-host interactions to optimize the efficiency of TADF OLEDs (2016) J. Phys. Chem. Lett., 7, pp. 3341-3346; Dos Santos, P.L., Engineering the singlet-triplet energy splitting in a TADF molecule (2016) J. Mater. Chem. C, 4, pp. 3815-3824; Data, P., Dibenzo[a,j]phenazine-cored donor-acceptor-donor compounds as green-to-red/NIR thermally activated delayed fluorescence organic light emitters (2016) Angew. Chem., Int. Ed., 55, pp. 5739-5744; Xu, H., Application of chelate phosphine oxide ligand in EuIII complex with mezzo triplet energy level, highly efficient photoluminescent, and electroluminescent performances (2006) J. Phys. Chem. B, 110, pp. 3023-3029; List, E.J.W., Guentner, R., Scanducci De-Freitas, P., Scherf, U., The effect of keto defect sites on the emission properties of polyfluorene-type materials (2002) Adv. Mater., 14, pp. 374-378; Dos Santos, P.L., Dias, F.B., Monkman, A.P., An investigation of the mechanisms giving rise to TADF in exciplex states (2016) J. Phys. Chem. C, 120, pp. 18259-18267; Data, P., Exciplex enhancement as a tool to increase OLED device efficiency (2016) J. Phys. Chem. C, 120, pp. 2070-2078; Gather, M.C., Köhnen, A., Meerholz, K., White organic light-emitting diodes (2011) Adv. Mater., 23, pp. 233-248}, correspondence_address1={Pereira, D.D.S.; Physics Department, Durham University, South Road, United Kingdom; email: daniel.a.pereira@durham.ac.uk}, publisher={Nature Publishing Group}, issn={20452322}, pubmed_id={28740185}, language={English}, abbrev_source_title={Sci. Rep.}, document_type={Article}, source={Scopus},