We conducted photoluminescence (PL) mapping to elucidate the detailed mechanism of PL enhancement based on the energy transfer from excitons to surface plasmon polaritons (SPPs) in silver-coated InGaN quantum wells (QWs). The PL mapping for bare InGaN QWs showed positive or negative correlations between the PL peak intensity and wavelength. These correlations are normally caused by exciton localization and the quantum confined Stark effect, respectively; however, they did not appear in the silver-coated region of the InGaN QWs, and the wavelength distribution shifted into shorter wavelengths due to the SP-induced PL enhancement. These results suggest that the energy transfer from the excitons to the SPPs should be much faster than that in the exciton localization and charge screening processes of the piezoelectric field in QWs.
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23 October 2017
Research Article|
October 27 2017
Micro-photoluminescence mapping of surface plasmon enhanced light emissions from InGaN/GaN quantum wells Available to Purchase
Kazutaka Tateishi;
Kazutaka Tateishi
1
Institute for Materials Chemistry and Engineering, Kyushu University
, 744 Motooka, Nishiku, Fukuoka 819-0395, Japan
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Pangpang Wang;
Pangpang Wang
1
Institute for Materials Chemistry and Engineering, Kyushu University
, 744 Motooka, Nishiku, Fukuoka 819-0395, Japan
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Sou Ryuzaki;
Sou Ryuzaki
1
Institute for Materials Chemistry and Engineering, Kyushu University
, 744 Motooka, Nishiku, Fukuoka 819-0395, Japan
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Mitsuru Funato
;
Mitsuru Funato
2
Department of Electronic Science and Engineering, Kyoto University, Katsura Campus
, Nishikyo-ku, Kyoto 615-8510, Japan
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Yoichi Kawakami;
Yoichi Kawakami
2
Department of Electronic Science and Engineering, Kyoto University, Katsura Campus
, Nishikyo-ku, Kyoto 615-8510, Japan
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Koichi Okamoto;
1
Institute for Materials Chemistry and Engineering, Kyushu University
, 744 Motooka, Nishiku, Fukuoka 819-0395, Japan
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Kaoru Tamada
Kaoru Tamada
1
Institute for Materials Chemistry and Engineering, Kyushu University
, 744 Motooka, Nishiku, Fukuoka 819-0395, Japan
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Kazutaka Tateishi
1
Pangpang Wang
1
Sou Ryuzaki
1
Mitsuru Funato
2
Yoichi Kawakami
2
Koichi Okamoto
1
Kaoru Tamada
1
1
Institute for Materials Chemistry and Engineering, Kyushu University
, 744 Motooka, Nishiku, Fukuoka 819-0395, Japan
2
Department of Electronic Science and Engineering, Kyoto University, Katsura Campus
, Nishikyo-ku, Kyoto 615-8510, Japan
Appl. Phys. Lett. 111, 172105 (2017)
Article history
Received:
August 03 2017
Accepted:
October 17 2017
Citation
Kazutaka Tateishi, Pangpang Wang, Sou Ryuzaki, Mitsuru Funato, Yoichi Kawakami, Koichi Okamoto, Kaoru Tamada; Micro-photoluminescence mapping of surface plasmon enhanced light emissions from InGaN/GaN quantum wells. Appl. Phys. Lett. 23 October 2017; 111 (17): 172105. https://doi.org/10.1063/1.4998798
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