Preparation and application of carbon-nanodot@NaCl composite phosphors with strong green emission

Yuechen Zhai; Ding Zhou; Pengtao Jing; Di Li; Haibo Zeng; Songnan Qu

doi:10.1016/j.jcis.2017.03.007

Preparation and application of carbon-nanodot@NaCl composite phosphors with strong green emission

J Colloid Interface Sci. 2017 Jul 1:497:165-171. doi: 10.1016/j.jcis.2017.03.007. Epub 2017 Mar 2.

Authors

Yuechen Zhai¹, Ding Zhou², Pengtao Jing¹, Di Li¹, Haibo Zeng³, Songnan Qu⁴

Affiliations

¹ State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.
² State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China. Electronic address: zhouding@ciomp.ac.cn.
³ Institute of Optoelectronics & Nanomaterials, College of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
⁴ State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China. Electronic address: qusn@ciomp.ac.cn.

PMID: 28284070
DOI: 10.1016/j.jcis.2017.03.007

Abstract

Luminescent carbon nanodots (CDots) have attracted much attention, but their luminescence is usually quenched in solid state. Efficient green or yellow emissive CDot-based phosphors are scarce. In this work, green emissive CDot@NaCl composite phosphors were fabricated through a convenient, low cost and eco-friendly way by embedding green emissive CDots (g-CDot) in NaCl crystals. With the protection of NaCl host, the g-CDot@NaCl composite phosphors exhibit good photostability, significant resistance to organic solvents, and improved photoluminescence quantum yields up to 25%. White light-emitting diodes with tunable color temperatures (3944-5478K) and CIE coordinates have been realized based on the g-CDot@NaCl composite phosphors.

Keywords: Carbon dots; Composite phosphors; High photostability; NaCl; White light-emitting diodes.

Publication types

Research Support, Non-U.S. Gov't