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Thiazoline Carbene-...
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Ruduss, ArmandsRiga Tech Univ, Fac Mat Sci & Appl Chem, LV-1048 Riga, Latvia.
(author)
Thiazoline Carbene-Cu(I)-Amide complexes : Efficient White Electroluminescence from Combined Monomer and Excimer Emission
- Article/chapterEnglish2022
Publisher, publication year, extent ...
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2022-03-29
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American Chemical Society (ACS),2022
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electronicrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:uu-476651
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-476651URI
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https://doi.org/10.1021/acsami.2c00847DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-185851URI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Funding Agencies|Latvian Council of Science [lzp-2019/1-0231]; Swedish Research Council [2020-04600, 2018-05973]; Ministry of Science and Technology of Taiwan [110-2221-E-155-036, 110-2221-E-155-033MY2]
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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.
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Turovska, BaibaLatvian Inst Organ Synth, LV-1006 Riga, Latvia.
(author)
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Belyakov, SergeyLatvian Inst Organ Synth, LV-1006 Riga, Latvia.
(author)
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Stucere, Kitija A.Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia.
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Vembris, AivarsUniv Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia.
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Baryshnikov, GlibLinköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten(Swepub:liu)gliba58
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Ågren, HansUppsala universitet,Kemisk och biomolekylär fysik,Uppsala Univ, Sweden(Swepub:uu)hanag788
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Lu, Jhao-ChengYuan Ze Univ, Dept Elect Engn, Chungli 32003, Taiwan.
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Lin, Wei-HanYuan Ze Univ, Dept Elect Engn, Chungli 32003, Taiwan.
(author)
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Chang, Chih-HaoYuan Ze Univ, Dept Elect Engn, Chungli 32003, Taiwan.
(author)
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Traskovskis, KasparsRiga Tech Univ, Fac Mat Sci & Appl Chem, LV-1048 Riga, Latvia.
(author)
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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)
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In:ACS Applied Materials and Interfaces: American Chemical Society (ACS)14:13, s. 15478-154931944-82441944-8252
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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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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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