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Stable and efficien...
Stable and efficient hybrid Ag-In-S/ZnS@SiO2-carbon quantum dots nanocomposites for white light-emitting diodes
- Article/chapterEnglish2020
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Elsevier,2020
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LIBRIS-ID:oai:DiVA.org:umu-173598
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-173598URI
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https://doi.org/10.1016/j.cej.2020.124654DOI
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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
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As a promising energy-saving technique, the eco-friendly and low-cost solid-state white light-emitting diodes (WLEDs) based on quantum dots (QDs) have been widely studied. Herein, a WLED device prepared by core-shell structure nanocomposites based on Ag-In-S/ZnS@SiO2 quantum dots (AIS@SiO2) and carbon quantum dots (CDs) was successfully constructed. CDs were combined onto the surface of AIS@SiO2 QDs to synthesize Ag-In-S/ZnS@SiO2-Carbon quantum dots (AIS-CDs) nanocomposites with a white-light emission, which successfully overcome the quenching effect of CDs induced by conventional aggregation. The as-prepared AIS-CDs nanocomposites presented high stability and a photoluminescence quantum yield (PLQY) of 35%. Moreover, the corresponding AIS-CDs nanocomposites-based WLEDs demonstrated the color coordinate of (0.32, 0.33), which is comparable to the pure white light (0.33, 0.33); furthermore, the luminous efficiency of the as-prepared WLEDs showed 15.1 lm W-1. These results reported herein may open up a new avenue for the development of high-performance, low-cost, and environmentally-friendly WLEDs.
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Yang, Jie
(author)
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Liu, Yong-fengUmeå universitet,Institutionen för fysik(Swepub:umu)yoli0007
(author)
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Zeng, Fan-ju
(author)
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Tang, Xiao-Sheng
(author)
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Yao, Zhi-qiang
(author)
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Guan, Hong-ling
(author)
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Xiong, Qian
(author)
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Zhou, Jia-er
(author)
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Wu, Dao-fu
(author)
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Du, Juan
(author)
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Umeå universitetInstitutionen för fysik
(creator_code:org_t)
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In:Chemical Engineering Journal: Elsevier3931385-89471873-3212
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Lin, Hao
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Yang, Jie
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Liu, Yong-feng
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Zeng, Fan-ju
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Tang, Xiao-Sheng
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Yao, Zhi-qiang
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show more...
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Guan, Hong-ling
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Xiong, Qian
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Zhou, Jia-er
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Wu, Dao-fu
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Du, Juan
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- ENGINEERING AND TECHNOLOGY
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Chemical Enginee ...
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Umeå University