화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2017년 가을 (11/08 ~ 11/10, 부산 벡스코(BEXCO))
권호 21권 2호
발표분야 무기재료_포스터
제목 Synthesis of the Mn2+-doped ZnSe@ZnS quantum dots
초록 Relatively monodisperse and highly luminescent Mn2+-doped ZnSe nanocrystals were synthesized in aqueous solution at 100ºC using the nucleation-doping strategy. The effects were investigated systematically. Using 3-mercaptopropionic acid as capping ligand afforded 3.1 nm wide ZnSe:Mn quantum dots (QDs) with very low surface defect density and which exhibited the Mn2+related orange luminescence.  The post-preparative introduction of a ZnS shell at the surface of the Mn2+-doped ZnSe QDs improved their photoluminescence properties, resulting in stronger emission. . Mn2+-doped ZnSe@ZnS QDs were investigated by X-ray differaction spectroscopy(XRD), UV-visible spectroscopy, Photoluminescence spectroscopy(PL). XRD confirms Mn2+-doped ZnSe@ZnS QDs nanocrystal structure. Because of the Ostwald ripening effect, UV spectrum was indicated red-shift. The absorption peak was indicated redshift. The PL of the clear orange solution was monitored in the course of the nanocrystal growth.
저자 이유로, 김종규, 유정열, 김우석, 정운호, 박선아, 김은비, 하태훈, 이탁재
소속 단국대
키워드 Quantum dots; Zinc; Sellenium; Mn doped.
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