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Erschienen in: Polymer Bulletin 12/2019

23.02.2019 | Original Paper

The contribution of triplet excitons to the total singlet production yield in a sky-blue emitting co-polymer film

verfasst von: Murat Aydemir

Erschienen in: Polymer Bulletin | Ausgabe 12/2019

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Abstract

In this work, the complex excited state dynamics of a sky-blue emitting co-polymer {poly-[9,9′-dioctylfluorene-co-bis-N,N′-(4-butylphenyl)-bis-N,N′-phenyl-1,4-phenylenediamine]} is determined, using a time-resolved gated spectroscopy method, which helps to investigate the origin of delayed fluorescence in thin film. It is clearly shown that delayed fluorescence arises from triplet–triplet annihilation mechanism, which opens an indirect pathway to generate singlet excitons. Experimentally, the delayed fluorescence yield varies from 20% at room temperature to 46 ± 2% at 20 K, suggesting that an alternative triplet harvesting mechanism is operative to convert the triplet into emissive singlet states.

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Literatur
1.
Zurück zum Zitat Burroughes JH, Bradley DDC, Brown AR et al (1990) Light-emitting diodes based on conjugated polymers. Nature 347:539–541CrossRef Burroughes JH, Bradley DDC, Brown AR et al (1990) Light-emitting diodes based on conjugated polymers. Nature 347:539–541CrossRef
2.
Zurück zum Zitat Liang J, Li L, Niu X, Yu Z, Pei Q (2013) Elastomeric polymer light-emitting devices and displays. Nat Photon 7:817–824CrossRef Liang J, Li L, Niu X, Yu Z, Pei Q (2013) Elastomeric polymer light-emitting devices and displays. Nat Photon 7:817–824CrossRef
3.
Zurück zum Zitat Kondakov DY (2009) Role of triplet–triplet annihilation in highly efficient fluorescent devices. J Soc Inf Disp 17:137–144CrossRef Kondakov DY (2009) Role of triplet–triplet annihilation in highly efficient fluorescent devices. J Soc Inf Disp 17:137–144CrossRef
4.
Zurück zum Zitat Aydemir M, Vygintas J, Fernando BD, Andrew PM (2015) Inter/intrachain interactions behind the formation of charge transfer states in polyspirobifluorene: a case study for complex excited-state dynamics in different polarity index solvents. J Phys Chem C 119:5855–5863CrossRef Aydemir M, Vygintas J, Fernando BD, Andrew PM (2015) Inter/intrachain interactions behind the formation of charge transfer states in polyspirobifluorene: a case study for complex excited-state dynamics in different polarity index solvents. J Phys Chem C 119:5855–5863CrossRef
5.
Zurück zum Zitat Aydemir M, Haykır G, Battal A, Jankus V et al (2016) High efficiency OLEDs based on anthracene derivatives: the impact of electron donating and withdrawing group on the performance of OLED. Org Electron 30:149–157CrossRef Aydemir M, Haykır G, Battal A, Jankus V et al (2016) High efficiency OLEDs based on anthracene derivatives: the impact of electron donating and withdrawing group on the performance of OLED. Org Electron 30:149–157CrossRef
6.
Zurück zum Zitat Jankus V, Aydemir M, Dias FB, Monkman AP (2016) Generating light from upper excited triplet states: a contribution to the indirect singlet yield of a polymer OLED, helping to exceed the 25% singlet exciton limit. Adv Sci 3:1500221CrossRef Jankus V, Aydemir M, Dias FB, Monkman AP (2016) Generating light from upper excited triplet states: a contribution to the indirect singlet yield of a polymer OLED, helping to exceed the 25% singlet exciton limit. Adv Sci 3:1500221CrossRef
7.
Zurück zum Zitat Kondakov DY, Pawlik TD, Hatwar TK, Spindler JP (2009) Triplet annihilation exceeding spin statistical limit in highly efficient fluorescent organic light-emitting diodes. J Appl Phys 106:124510CrossRef Kondakov DY, Pawlik TD, Hatwar TK, Spindler JP (2009) Triplet annihilation exceeding spin statistical limit in highly efficient fluorescent organic light-emitting diodes. J Appl Phys 106:124510CrossRef
8.
Zurück zum Zitat Kondakov DY (2015) Triplet–triplet annihilation in highly efficient fluorescent organic light-emitting diodes: current state and future outlook. Philos Trans R Soc Math Phys Eng Sci 373:20140321CrossRef Kondakov DY (2015) Triplet–triplet annihilation in highly efficient fluorescent organic light-emitting diodes: current state and future outlook. Philos Trans R Soc Math Phys Eng Sci 373:20140321CrossRef
9.
Zurück zum Zitat Köhler A, Bässler H (2015) Electronic processes in organic semiconductors: an introduction. Wiley, New YorkCrossRef Köhler A, Bässler H (2015) Electronic processes in organic semiconductors: an introduction. Wiley, New YorkCrossRef
10.
Zurück zum Zitat Palilis L, Lidzey D, Redecker M et al (2001) High performance blue light-emitting diodes based on conjugated polymer blends. Synth Met Synth Met 121:1729–1730CrossRef Palilis L, Lidzey D, Redecker M et al (2001) High performance blue light-emitting diodes based on conjugated polymer blends. Synth Met Synth Met 121:1729–1730CrossRef
11.
Zurück zum Zitat Snaith HJ, Arias AC, Morteani AC, Silva C, Friend RH (2002) Charge generation kinetics and transport mechanisms in blended polyfluorene photovoltaic devices. Nano Lett Nano Lett 2:1353–1357CrossRef Snaith HJ, Arias AC, Morteani AC, Silva C, Friend RH (2002) Charge generation kinetics and transport mechanisms in blended polyfluorene photovoltaic devices. Nano Lett Nano Lett 2:1353–1357CrossRef
12.
Zurück zum Zitat Arias AC, MacKenzie JD, Stevenson R et al (2001) Photovoltaic performance and morphology of polyfluorene blends: a combined microscopic and photovoltaic investigation. Macromolecules 34:6005–6013CrossRef Arias AC, MacKenzie JD, Stevenson R et al (2001) Photovoltaic performance and morphology of polyfluorene blends: a combined microscopic and photovoltaic investigation. Macromolecules 34:6005–6013CrossRef
13.
Zurück zum Zitat Müllen K, Scherf U (2006) Organic light-emitting devices: synthesis, properties, and applications. Wiley, New York Müllen K, Scherf U (2006) Organic light-emitting devices: synthesis, properties, and applications. Wiley, New York
14.
Zurück zum Zitat Clare T (1986) An investigation of plasma polymerization and copolymerization using fluoroaromatic compounds, Dissertation, Durham University Clare T (1986) An investigation of plasma polymerization and copolymerization using fluoroaromatic compounds, Dissertation, Durham University
15.
Zurück zum Zitat Morteani AC, Friend RH, Silva C (2004) Endothermic exciplex–exciton energy-transfer in a blue-emitting polymeric heterojunction system. Chem Phys Lett 391:81–84CrossRef Morteani AC, Friend RH, Silva C (2004) Endothermic exciplex–exciton energy-transfer in a blue-emitting polymeric heterojunction system. Chem Phys Lett 391:81–84CrossRef
16.
Zurück zum Zitat Morteani AC, Dooht AS, Kim JS, Silva C et al (2003) Barrier-free electron–hole capture in polymer blend heterojunction light-emitting diodes. Adv Mater 15:1708CrossRef Morteani AC, Dooht AS, Kim JS, Silva C et al (2003) Barrier-free electron–hole capture in polymer blend heterojunction light-emitting diodes. Adv Mater 15:1708CrossRef
17.
Zurück zum Zitat Rothe C, Monkman AP (2003) Triplet exciton migration in a conjugated polyfluorene. Phys Rev B 68:075208CrossRef Rothe C, Monkman AP (2003) Triplet exciton migration in a conjugated polyfluorene. Phys Rev B 68:075208CrossRef
18.
Zurück zum Zitat Cheung ECC (2010) Evolution of optical gain properties through three generations of electroluminescent fluorene-based polymers, Dissertation, Imperial College London Cheung ECC (2010) Evolution of optical gain properties through three generations of electroluminescent fluorene-based polymers, Dissertation, Imperial College London
Metadaten
Titel
The contribution of triplet excitons to the total singlet production yield in a sky-blue emitting co-polymer film
verfasst von
Murat Aydemir
Publikationsdatum
23.02.2019
Verlag
Springer Berlin Heidelberg
Erschienen in
Polymer Bulletin / Ausgabe 12/2019
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-019-02729-8

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