Vacuum–Sublimable Ionic Yellow Phosphorescent Iridium(III) Complexes with Broad Emission for White Electroluminescence

The exploration of efficient yellow emitters featuring broad emission band plays an essential role for the complementary‐color‐based white organic light‐emitting devices (OLEDs). Herein, two new yellow ionic iridium(III) complexes (Ir1 and Ir2) having excellent sublimation ability are designed and p...

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Autores principales:	Peng Tao, Xiao-Kang Zheng, Yuk-Ki Lee, Guo-Liang Wang, Fei-Yang Li, Zi-Kang Li, Qiang Zhao, Yan-Qin Miao, Wai-Yeung Wong
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	broad emission ionic iridium(III) complexes sublimable ionic complexes yellow phosphorescence Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/2e3cf4c43dba47dc854eea3da5ae3413
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spelling	oai:doaj.org-article:2e3cf4c43dba47dc854eea3da5ae34132021-11-04T09:00:27ZVacuum–Sublimable Ionic Yellow Phosphorescent Iridium(III) Complexes with Broad Emission for White Electroluminescence2699-929310.1002/adpr.202100115https://doaj.org/article/2e3cf4c43dba47dc854eea3da5ae34132021-11-01T00:00:00Zhttps://doi.org/10.1002/adpr.202100115https://doaj.org/toc/2699-9293The exploration of efficient yellow emitters featuring broad emission band plays an essential role for the complementary‐color‐based white organic light‐emitting devices (OLEDs). Herein, two new yellow ionic iridium(III) complexes (Ir1 and Ir2) having excellent sublimation ability are designed and prepared by the incorporation of chlorine‐modified 2‐phenylquinoline ligand and introduction of bulky counter ion. At room temperature, these ionic iridium(III) complexes show bright yellow phosphorescence in both solid and solution states due to the presence of bulky counter ion. They share the same emission wavelength (538 and 573 nm as the emission shoulder) with extremely high quantum yields (as high as 0.91) in Ar‐saturated CH2Cl2. Notably, those complexes also exhibit very broad full width at half maximum (FWHM) (up to 100 nm) attributed to almost the same intensities of emission maximum and shoulder, making them excellent candidates for white electroluminescence. The as‐prepared yellow OLEDs show high external quantum efficiency (EQE) of 11.6% and broad FWHM of 105 nm. The two‐color‐based white OLED is prepared with peak EQE of 9.2%, the 1931 CIE coordinate of (0.29, 0.31), and color rendering index of 79, proving that these new ionic iridium(III) complexes show a great potential for white electroluminescence.Peng TaoXiao-Kang ZhengYuk-Ki LeeGuo-Liang WangFei-Yang LiZi-Kang LiQiang ZhaoYan-Qin MiaoWai-Yeung WongWiley-VCHarticlebroad emissionionic iridium(III) complexessublimable ionic complexesyellow phosphorescenceApplied optics. PhotonicsTA1501-1820Optics. LightQC350-467ENAdvanced Photonics Research, Vol 2, Iss 11, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	broad emission ionic iridium(III) complexes sublimable ionic complexes yellow phosphorescence Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
spellingShingle	broad emission ionic iridium(III) complexes sublimable ionic complexes yellow phosphorescence Applied optics. Photonics TA1501-1820 Optics. Light QC350-467 Peng Tao Xiao-Kang Zheng Yuk-Ki Lee Guo-Liang Wang Fei-Yang Li Zi-Kang Li Qiang Zhao Yan-Qin Miao Wai-Yeung Wong Vacuum–Sublimable Ionic Yellow Phosphorescent Iridium(III) Complexes with Broad Emission for White Electroluminescence
description	The exploration of efficient yellow emitters featuring broad emission band plays an essential role for the complementary‐color‐based white organic light‐emitting devices (OLEDs). Herein, two new yellow ionic iridium(III) complexes (Ir1 and Ir2) having excellent sublimation ability are designed and prepared by the incorporation of chlorine‐modified 2‐phenylquinoline ligand and introduction of bulky counter ion. At room temperature, these ionic iridium(III) complexes show bright yellow phosphorescence in both solid and solution states due to the presence of bulky counter ion. They share the same emission wavelength (538 and 573 nm as the emission shoulder) with extremely high quantum yields (as high as 0.91) in Ar‐saturated CH2Cl2. Notably, those complexes also exhibit very broad full width at half maximum (FWHM) (up to 100 nm) attributed to almost the same intensities of emission maximum and shoulder, making them excellent candidates for white electroluminescence. The as‐prepared yellow OLEDs show high external quantum efficiency (EQE) of 11.6% and broad FWHM of 105 nm. The two‐color‐based white OLED is prepared with peak EQE of 9.2%, the 1931 CIE coordinate of (0.29, 0.31), and color rendering index of 79, proving that these new ionic iridium(III) complexes show a great potential for white electroluminescence.
format	article
author	Peng Tao Xiao-Kang Zheng Yuk-Ki Lee Guo-Liang Wang Fei-Yang Li Zi-Kang Li Qiang Zhao Yan-Qin Miao Wai-Yeung Wong
author_facet	Peng Tao Xiao-Kang Zheng Yuk-Ki Lee Guo-Liang Wang Fei-Yang Li Zi-Kang Li Qiang Zhao Yan-Qin Miao Wai-Yeung Wong
author_sort	Peng Tao
title	Vacuum–Sublimable Ionic Yellow Phosphorescent Iridium(III) Complexes with Broad Emission for White Electroluminescence
title_short	Vacuum–Sublimable Ionic Yellow Phosphorescent Iridium(III) Complexes with Broad Emission for White Electroluminescence
title_full	Vacuum–Sublimable Ionic Yellow Phosphorescent Iridium(III) Complexes with Broad Emission for White Electroluminescence
title_fullStr	Vacuum–Sublimable Ionic Yellow Phosphorescent Iridium(III) Complexes with Broad Emission for White Electroluminescence
title_full_unstemmed	Vacuum–Sublimable Ionic Yellow Phosphorescent Iridium(III) Complexes with Broad Emission for White Electroluminescence
title_sort	vacuum–sublimable ionic yellow phosphorescent iridium(iii) complexes with broad emission for white electroluminescence
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/2e3cf4c43dba47dc854eea3da5ae3413
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Vacuum–Sublimable Ionic Yellow Phosphorescent Iridium(III) Complexes with Broad Emission for White Electroluminescence

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