We fabricated luminescent chemical vapor deposition-grown monolayer graphene sheets with an adsorbed europium complex, EuLC18, and characterized their luminescence properties. The EuLC18/graphene sheets clearly showed several photoluminescence peaks in a wavelength region from 580 to 694 nm, which were attributed to the ff transitions of the Eu ion. Luminescence was obtained via a photo-antenna effect, in which the ligands of EuLC18 absorbed the photo-excitation energy and transported it to the Eu excitation. Although the absolute luminescence quantum yield of the EuLC18/graphene sheet was as low as 0.5% due to the interaction between graphene and EuLC18, we demonstrated that graphene sheets can be made luminescent simply through adsorption of the luminescent Eu complex on the graphene surface.
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23 April 2018
Research Article|
April 26 2018
Making graphene luminescent by adsorption of an amphiphilic europium complex
Yusuke Hara;
Yusuke Hara
1
Department of Electrical Engineering and Electronics, College of Science and Engineering, Aoyama Gakuin University
, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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Koushi Yoshihara;
Koushi Yoshihara
2
Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University
, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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Kazuki Kondo;
Kazuki Kondo
2
Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University
, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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Shuhei Ogata;
Shuhei Ogata
2
Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University
, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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Takeshi Watanabe;
Takeshi Watanabe
1
Department of Electrical Engineering and Electronics, College of Science and Engineering, Aoyama Gakuin University
, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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Ayumi Ishii;
Ayumi Ishii
2
Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University
, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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Miki Hasegawa;
Miki Hasegawa
2
Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University
, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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Shinji Koh
Shinji Koh
1
Department of Electrical Engineering and Electronics, College of Science and Engineering, Aoyama Gakuin University
, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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Appl. Phys. Lett. 112, 173103 (2018)
Article history
Received:
November 19 2017
Accepted:
April 08 2018
Citation
Yusuke Hara, Koushi Yoshihara, Kazuki Kondo, Shuhei Ogata, Takeshi Watanabe, Ayumi Ishii, Miki Hasegawa, Shinji Koh; Making graphene luminescent by adsorption of an amphiphilic europium complex. Appl. Phys. Lett. 23 April 2018; 112 (17): 173103. https://doi.org/10.1063/1.5016418
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