Time-Resolved Luminescence Properties of Laser-Fabricated Nano-diamonds.

Juan Hao, Lingyun Pan, Minghui An, Yunzhi Dai, Bingrong Gao

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In one paragraph

Article in Nanoscale research letters, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Juan HaoCollege of Electronic Science and Engineering, Jilin University, Changchun, 130012, People's Republic of China.

Lingyun PanCollege of Physics, Jilin University, Changchun, 130012, People's Republic of China. ply@jlu.edu.cn.

Minghui AnCollege of Electronic Science and Engineering, Jilin University, Changchun, 130012, People's Republic of China.

Yunzhi DaiCollege of Electronic Science and Engineering, Jilin University, Changchun, 130012, People's Republic of China.

Bingrong GaoCollege of Electronic Science and Engineering, Jilin University, Changchun, 130012, People's Republic of China. brgao@jlu.edu.cn.

Funding

National Key Research and Development Program of China No. 2017YFB1104600National Natural Science Foundation of China 21903035National Natural Science Foundation of China 61575079National Natural Science Foundation of China 61590930National Natural Science Foundation of China 61825502National Natural Science Foundation of China 61827826

6 · The paper itself

Abstract

In the study, well-crystallized nano-diamonds with an average size of 3.8 nm are obtained via femtosecond laser ablation. Both steady-state and transient luminescence are observed. The luminescence peaks of nano-diamonds shift from 380 to 495 nm when the excitation wavelength changes from 280 to 420 nm. After passivation by polyethylene glycol-400N, the surface of nano-diamonds is significantly oxidized, which is verified by Raman and UV-Vis absorption spectra. Furthermore, there is no change in all the luminescence wavelengths, although the maximum intensity increases by 10 times. Time-resolved luminescence spectra reveal that trapping states can be modified by surface passivation, and this leads to stronger luminescence with a longer lifetime.

Indexed as

LuminescenceNano-diamondsPulsed laser ablationSurface modification

Identifiers

PMID32816127

DOI10.1186/s11671-020-03393-y

PMCPMC7441128

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