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양이온 교환에 의한 CuInS²/ZnS 코어-쉘 양자점의 합성과 형광에 대한 연구
- Alternative Title
- CuInS²/ZnS Core-Shell Quantum Dots by Cation Exchange and Their Blue-Shift of Photoluminescence
- Author(s)
- 박재현
- Alternative Author(s)
- Park, Jae-hyun
- Advisor
- 김상욱
- Department
- 일반대학원 분자과학기술학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2011-02
- Language
- eng
- Keyword
- 양자점
- Alternative Abstract
- Highly luminescent CuInS²/ZnS (CIS/ZnS) core/shell quantum dots which have quantum yield of 65 % were synthesized by cation exchange reaction. Similar sized CIS core and CIS/ZnS core/shell which were confirmed by the TEM images revealed that cation exchange occurred inside core, as a result, reduced core size and large blue-shifted emission. Elemental analysis by the ICP revealed the CIS cores have gradient composition that is richer in indium close to the surface of the core, which could explain broad emission spectrum. Cation exchange reaction could be applied to AgInS² (AIS) QDs, which showed blue-shift of 70 ㎚ in the emission spectrum. PXRD pattern also showed peak shift as an evidence of core/shell structure.
- Fulltext
- Appears in Collections:
- Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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