Hydrogen Peroxide‐Treated Carbon Dot Phosphor with a Bathochromic‐Shifted, Aggregation‐Enhanced Emission for Light‐Emitting Devices and Visible Light Communication | Zendy

Zhou Zhengjie | Zendy; Tian Pengfei | Zendy; Liu Xiaoyan | Zendy; Mei Shiliang | Zendy; Zhou Ding | Zendy; Li Di | Zendy; Jing Pengtao | Zendy; Zhang Wanlu | Zendy; Guo Ruiqian | Zendy; Qu Songnan | Zendy; Rogach Andrey L. | Zendy

Open Access

Hydrogen Peroxide‐Treated Carbon Dot Phosphor with a Bathochromic‐Shifted, Aggregation‐Enhanced Emission for Light‐Emitting Devices and Visible Light Communication

Author(s) -

Zhou Zhengjie,

Tian Pengfei,

Liu Xiaoyan,

Mei Shiliang,

Zhou Ding,

Li Di,

Jing Pengtao,

Zhang Wanlu,

Guo Ruiqian,

Qu Songnan,

Rogach Andrey L.

Publication year - 2018

Publication title -

advanced science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.388

H-Index - 100

ISSN - 2198-3844

DOI - 10.1002/advs.201800369

Subject(s) - phosphor , bathochromic shift , photoluminescence , materials science , luminescence , green light , optoelectronics , quantum yield , visible spectrum , photochemistry , hydrogen peroxide , optics , chemistry , fluorescence , blue light , physics , organic chemistry

It is demonstrated that treatment of blue‐emissive carbon dots (CDs) with aqueous hydrogen peroxide (H 2 O 2 ) 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 H 2 O 2 ‐treated CDs in the powder is ascribed to surface state changes occurring in the aggregated material. Using the green emissive H 2 O 2 ‐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.

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