Abstract
White light-emitting diodes (LEDs) are great candidates for general lighting. Phosphors have commonly been used for the color conversion layers of white LEDs; however, they backscatter more than half of the down-converted light, which is lost within the device, thus degrading the overall performance. In this study, we propose and demonstrate white LEDs with improved efficiency enabled by the intimate integration of Ag@SiO2-supported blue InGaN/GaN nanorod LEDs together with green- and red-emitting perovskite nanocrystal (PNC) films as color conversion layers. The photoluminescence (PL) intensity of the blue LEDs (BLEDs) was significantly enhanced owing to the localized surface plasmon (LSP) effect of Ag@SiO2 nanoparticles. In addition, the perovskite PL intensity was improved by the high-power BLED backlight. The resulting PL intensity of the Ag@SiO2 nanoparticle-embedded nanorod white LED was 62% greater than that of a planar white LED.
Original language | English |
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Article number | 162974 |
Journal | Journal of Alloys and Compounds |
Volume | 898 |
DOIs | |
Publication status | Published - 2022 Mar 25 |
Bibliographical note
Funding Information:This research study was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT) ( NRF-2019K1A3A1A39103053 ) and by the Scientific and Technological Research Council of Turkey ( TÜBİTAK 119N343 ).
Publisher Copyright:
© 2021 Elsevier B.V.
Keywords
- Localized surface plasmon
- Nanorod light-emitting diodes
- Perovskite nanocrystals
- White light-emitting diodes
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry