Enhanced band-edge photoluminescence from MgO passivated ZnO nanocrystals

Yamamoto, Sekika; Mishina, Tomobumi

Journal of Luminescence, 2011, 131(4), 620-622

Permalink : https://hdl.handle.net/2115/45496

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アクセス権	open access
URI	https://hdl.handle.net/2115/45496
タイトル	Enhanced band-edge photoluminescence from MgO passivated ZnO nanocrystals
著者	著者名 Yamamoto, Sekika
著者	著者名 Mishina, Tomobumi
言語	英語
キーワード	ZnO
	Nanocrystal
	Luminescence
	Surface passivation
発行日	2011-04
出版者	Elsevier B.V.
収録物名	Journal of Luminescence
巻(号)	131(4)
ページ	620-622
抄録	Intense band-edge photoluminescence is observed from ZnO nanocrystals with an average diameter of about 3 nm. It is found that the growth from high temperature (70℃) precursor solution and succeeding surface passivation by MgO layer together lead to a five times enhancement of band-edge luminescence, in comparison to those grown by conventional low-temperature method without surface passivation. It is also found that above-band-gap illumination on the nanocrystals further enhances the luminescence intensity by five times. The strong photo-enhancement is considered to be aided by the reduction of surface non-radiative recombination path.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0022-2313
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.jlumin.2010.11.002