Photoluminescence quenching in cobalt doped ZnO nanocrystals

Sekika Yamamoto

Journal of Applied Physics, 2012, 111(9), 094310

Permalink : https://hdl.handle.net/2115/49182

このアイテムのアクセス数:268件（2026-02-09 13:48 集計）

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ZnCoO2012JAP	pdf	1.45 MB	477

アクセス権	open access
URI	https://hdl.handle.net/2115/49182
タイトル	Photoluminescence quenching in cobalt doped ZnO nanocrystals
著者	著者名 Sekika Yamamoto
言語	英語
キーワード	cobalt
	excitons
	II-VI semiconductors
	inclusions
	nanostructured materials
	photoluminescence
	radiation quenching
	red shift
	semiconductor doping
	time resolved spectra
	wide band gap semiconductors
	zinc compounds
発行日	2012-05-07
収録物名	Journal of Applied Physics
巻(号)	111(9)
ページ	094310
抄録	Influence of cobalt doping on the luminescence properties of ZnO nanocrystals with average diameter of 3.0 nm is investigated. Time resolved measurements at 20 K show that the dark exciton luminescence is completely lost in the nanocrystals doped with cobalt, while the perturbed luminescence with slight red shift survives and exhibits a non-exponential decay curve reflecting random distribution of cobalt atoms. By analyzing the non-exponentiality, the increase of the decay rate of the band-edge luminescence induced by the inclusion of single cobalt atom is estimated to be 0.012 ps-1
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	0021-8979
EISSN	1089-7550
関連情報	URI http://jap.aip.org/
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1063/1.4710533