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- W4200541791 abstract "Polarized light emission from organic light-emitting devices (OLEDs) is of considerable current interest because of their great potential in various optical and optoelectronic devices. Utilizing materials with aligned molecular orientation is a simple and promising way to realize highly polarized OLEDs; however, both the polarization ratio and efficiency are still far from the requirements for practical applications. Organic single crystals with inherent anisotropic properties induced by their long-range periodic order are ideal candidates for intrinsically polarized emission. Herein, the intrinsic polarization has been dramatically amplified by constructing a microcavity structure in organic single-crystal OLEDs to effectively couple microcavity resonance to polarized light. A high polarization ratio of 176 has been achieved from the polarized OLEDs. Moreover, highly aligned single-crystalline molecules with small tilted orientation angles to the crystal surface result in a high outcoupling efficiency for surface-emitting crystal OLEDs. A maximum luminance of <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mn>6122</mml:mn> <mml:mspace width=thickmathspace /> <mml:msup> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>c</mml:mi> <mml:mi mathvariant=normal>d</mml:mi> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mo>/</mml:mo> </mml:mrow> <mml:mi mathvariant=normal>m</mml:mi> </mml:mrow> <mml:mn>2</mml:mn> </mml:msup> </mml:math> and current efficiency of 1.86 cd/A were achieved, which are among the best performances for crystal OLEDs. This work may lead to a new strategy for simultaneously enhancing the polarization ratio and efficiency of polarized OLEDs and promote their development in various optical and optoelectronic applications." @default.
- W4200541791 created "2021-12-31" @default.
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- W4200541791 date "2022-01-18" @default.
- W4200541791 modified "2023-10-14" @default.
- W4200541791 title "Highly polarized emission from organic single-crystal light-emitting devices with a polarization ratio of 176" @default.
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- W4200541791 doi "https://doi.org/10.1364/optica.442016" @default.
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