| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 봄 (05/02 ~ 05/04, 대구 엑스코(EXCO)) |
| 권호 |
22권 1호 |
| 발표분야 |
무기재료_포스터 |
| 제목 |
Synthesis of the Ni2+-doped ZnSe@ZnS@ZnS quantum dots |
| 초록 |
Relatively monodisperse and highly luminescent Ni2+-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:Ni quantum dots (QDs) with very low surface defect density and which exhibited the Ni2+related green luminescence. The post-preparative introduction of a ZnS shell at the surface of the Ni2+-doped ZnSe QDs improved their photoluminescence properties, resulting in stronger emission. Ni2+-doped ZnSe@ZnS@ZnS QDs were investigated by X-ray differaction spectroscopy(XRD), UV-visible spectroscopy, Photoluminescence spectroscopy(PL). XRD confirms Ni2+-doped ZnSe@ZnS@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 green solution was monitored in the course of the nanocrystal growth. |
| 저자 |
이유로, 김종규, 유정열, 박선아, 정운호, 김은비, 김우석
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| 소속 |
단국대 |
| 키워드 |
Quantum dots; Zinc; Sellenium; Ni doped; Core shell
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| E-Mail |
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