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Thiazoline Carbene-...
Thiazoline Carbene-Cu(I)-Amide complexes : Efficient White Electroluminescence from Combined Monomer and Excimer Emission
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- Ruduss, Armands (author)
- Riga Tech Univ, Fac Mat Sci & Appl Chem, LV-1048 Riga, Latvia.
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- Turovska, Baiba (author)
- Latvian Inst Organ Synth, LV-1006 Riga, Latvia.
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- Belyakov, Sergey (author)
- Latvian Inst Organ Synth, LV-1006 Riga, Latvia.
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- Stucere, Kitija A. (author)
- Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia.
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- Vembris, Aivars (author)
- Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia.
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- Baryshnikov, Glib (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Ågren, Hans (author)
- Uppsala universitet,Kemisk och biomolekylär fysik,Uppsala Univ, Sweden
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- Lu, Jhao-Cheng (author)
- Yuan Ze Univ, Dept Elect Engn, Chungli 32003, Taiwan.
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- Lin, Wei-Han (author)
- Yuan Ze Univ, Dept Elect Engn, Chungli 32003, Taiwan.
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- Chang, Chih-Hao (author)
- Yuan Ze Univ, Dept Elect Engn, Chungli 32003, Taiwan.
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- Traskovskis, Kaspars (author)
- Riga Tech Univ, Fac Mat Sci & Appl Chem, LV-1048 Riga, Latvia.
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Riga Tech Univ, Fac Mat Sci & Appl Chem, LV-1048 Riga, Latvia Latvian Inst Organ Synth, LV-1006 Riga, Latvia. (creator_code:org_t)
- 2022-03-29
- 2022
- English.
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In: ACS Applied Materials and Interfaces. - : American Chemical Society (ACS). - 1944-8244 .- 1944-8252. ; 14:13, s. 15478-15493
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Abstract
Subject headings
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- Luminescent carbene-metal-amide complexes bearing group 11 metals (Cu, Ag, Au) have recently attracted great attention due to their exceptional emission efficiency and high radiative decay rates (k(r)). These materials provide a less costly alternative to organic light-emitting diode (OLED) emitters based on more scarce metals, such as Ir and Pt. Herein, a series of eight Cu(I) complexes bearing as yet unexplored 1,3-thiazoline carbenes have been investigated and analyzed with respect to their light emission properties and OLED application. For the first time among the class of copper-based organometallic compounds the formation of efficient electroluminescent excimers is demonstrated. The prevalence of electroluminescence (EL) from either the monomer (bluish green) or the excimer (orange-red) can be adjusted in vacuum-deposited emissive layers by altering the extent of steric encumbrance of the emitter or its concentration. Optimized conditions in terms of the emitter structure and mass fraction allowed a simultaneous EL from the monomer and excimer, which laid the basis for a preparation of a single-emitter white OLED (WOLED) with external quantum efficiency of 16.5% and a maximum luminance of over 40000 cd m(-2). Wide overlapping emission bands of the monomer and excimer ensure a device color rendering index (CRI) of above 80. In such a way the prospects of copper complexes as cost-effective materials for lighting devices are demonstrated, offering expense reduction through a cheaper emissive component and a simplified device architecture.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Keyword
- thermally activated delayed fluorescence
- copper complex
- organic light-emitting diode
- carbene-metal-amide
- excimer
- Marcus theory
- conformational locking
- white emission
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ruduss, Armands
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Turovska, Baiba
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Belyakov, Sergey
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Stucere, Kitija ...
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Vembris, Aivars
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Baryshnikov, Gli ...
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show more...
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Ågren, Hans
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Lu, Jhao-Cheng
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Lin, Wei-Han
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Chang, Chih-Hao
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Traskovskis, Kas ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Other Chemistry ...
- Articles in the publication
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ACS Applied Mate ...
- By the university
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Uppsala University
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Linköping University