Highly Efficient and Stable White Light-Emitting Diodes Using Perovskite Quantum Dot Paper
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Article number | 1902230 |
Journal / Publication | Advanced Science |
Volume | 6 |
Issue number | 24 |
Online published | 29 Oct 2019 |
Publication status | Published - 18 Dec 2019 |
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DOI | DOI |
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Attachment(s) | Documents
Publisher's Copyright Statement
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85074723957&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(b2f8d285-ffef-432c-a3cc-2943512e5b1d).html |
Abstract
Perovskite quantum dots (PQDs) are a competitive candidate for next-generation display technologies as a result of their superior photoluminescence, narrow emission, high quantum yield, and color tunability. However, due to poor thermal resistance and instability under high energy radiation, most PQD-based white light-emitting diodes (LEDs) show only modest luminous efficiency of ≈50 lm W-1 and a short lifetime of <100 h. In this study, by incorporating cellulose nanocrystals, a new type of QD film is fabricated: CH3NH3PbBr3 PQD paper that features 91% optical absorption, intense green light emission (518 nm), and excellent stability attributed to the complexation effect between the nanocellulose and PQDs. The PQD paper is combined with red K2SiF6:Mn4+ phosphor and blue GaN LED chips to fabricate a high-performance white LED demonstrating ultrahigh luminous efficiency (124 lm W-1), wide color gamut (123% of National Television System Committee), and long operation lifetime (240 h), which paves the way for advanced lighting technology.
Research Area(s)
- light-emitting diodes, paper, perovskites, quantum dots, stability, POLYMER COMPOSITE FILMS, COLOR-GAMUT, NANOCRYSTALS, LEDS, PHOTOLUMINESCENCE, LUMINESCENT, BR, TRANSPARENT, DISPLAYS, CSPBX3
Citation Format(s)
Highly Efficient and Stable White Light-Emitting Diodes Using Perovskite Quantum Dot Paper. / Kang, Chieh-Yu; Lin, Chun-Ho; Lin, Chih-Hao et al.
In: Advanced Science, Vol. 6, No. 24, 1902230, 18.12.2019.
In: Advanced Science, Vol. 6, No. 24, 1902230, 18.12.2019.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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