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High performance hy...
High performance hybrid tandem white organic light-emitting diodes by using a novel intermediate connector
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Shi, Changsheng (författare)
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- Sun, Ning (författare)
- Umeå universitet,Institutionen för fysik
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Wu, Zhongbin (författare)
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Chen, Jiangshan (författare)
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Ma, Dongge (författare)
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(creator_code:org_t)
- 2018
- 2018
- Engelska.
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Ingår i: Journal of Materials Chemistry C. - : Royal Society of Chemistry. - 2050-7526 .- 2050-7534. ; 6:4, s. 767-772
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We propose a novel intermediate connector for fluorescence/phosphorescence hybrid tandem white organic light emitting diodes (WOLEDs). The core of our concept is to insert a thin layer of calcium (Ca) between lithium 8-hydroxyquinolinolate (Liq) and 1,4,5,8,9,11-hexaazatriphenylene hexacarbonitrile (HAT-CN) to construct the intermediate connector. The resultant hybrid tandem WOLEDs exhibit very high device performance. For the color-complementary devices, the maximum current efficiency (CE), power efficiency (PE) and external quantum efficiency (EQE) reach 106.3 cd A−1, 51.4 lm W−1 and 39.6%, respectively, without any out-coupling techniques. At the luminance intensity of 1000 cd m−2, the efficiencies can still be maintained at 102.8 cd A−1, 46.9 lm W−1 and 38.8%. We also obtain a color rendering index (CRI) as high as 93 in a three-primary-color device. Moreover, both the complementary and three-primary-color devices possess excellent stability for the luminance increased from 1000 cd m−2 to 10 000 cd m−2.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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