Hydrogen Peroxide-Treated Carbon Dot Phosphor with a Bathochromic-Shifted, Aggregation-Enhanced Emission for Light-Emitting Devices and Visible Light Communication
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 | 1800369 |
Journal / Publication | Advanced Science |
Volume | 5 |
Issue number | 8 |
Online published | 13 Jun 2018 |
Publication status | Published - Aug 2018 |
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DOI | DOI |
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Attachment(s) | Documents
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85051588443&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(a4b7ce25-b017-48b7-a884-75d26e31c1bd).html |
Abstract
It is demonstrated that treatment of blue-emissive carbon dots (CDs) with aqueous hydrogen peroxide (H2O2) results in the green emissive solid state CD phosphor with photoluminescence quantum yield of 25% and short luminescence lifetime of 6 ns. The bathochromic-shifted, enhanced green emission of H2O2-treated CDs in the powder is ascribed to surface state changes occurring in the aggregated material. Using the green emissive H2O2-treated CD phosphor, down-conversion white-light-emitting devices with cool, pure, and warm white light are fabricated. Moreover, using the green emissive CD phosphor as a color converter, a laser-based white-light source is realized, and visible light communication with a high modulation bandwidth of up to 285 MHz and data transmission rate of ≈435 Mbps is demonstrated.
Research Area(s)
- aggregation-enhanced emission, carbon dots, hydrogen peroxide, visible light communication, white-light sources, PHOTOLUMINESCENCE QUANTUM YIELD, CONJUGATED POLYMERS, COLOR-CONVERTER, NANODOTS, DIODES, TRANSMISSION, FLUORESCENCE, THERAPY, SENSORS
Citation Format(s)
Hydrogen Peroxide-Treated Carbon Dot Phosphor with a Bathochromic-Shifted, Aggregation-Enhanced Emission for Light-Emitting Devices and Visible Light Communication. / Zhou, Zhengjie; Tian, Pengfei; Liu, Xiaoyan et al.
In: Advanced Science, Vol. 5, No. 8, 1800369, 08.2018.
In: Advanced Science, Vol. 5, No. 8, 1800369, 08.2018.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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