| 학회 | 한국재료학회 |
| 학술대회 | 2007년 가을 (11/02 ~ 11/02, 성균관대학교) |
| 권호 | 13권 2호 |
| 발표분야 | 나노생체재료 |
| 제목 | Enhanced optical properties of noble metal-zinc oxide nanocomposites |
| 초록 | In this study spherical–shape Au- and Ag-ZnO nanocomposites were synthesized using a two-step solution phase method. The composite nanocrystals show enhanced UV light emission due not only to the surface electron transfer from the Au or Ag to the ZnO by the surface plasmon resonance (SPR), but to the extension of the Fermi energy level to the ZnO. Also, they show suppressed visible light luminescence due to the SPR energy transfer from the Au or Ag to the ZnO to excite the electrons trapped in oxygen vacancies. In this study, Au- and Ag-ZnO composite nanocrystals with the size of 4~10 nm were successfully synthesized using wet chemical approaches. Enhanced photoluminescence (PL) properties were revealed in the composite nanocrystals, and the mechanism was discussed based upon the SPR and the energy band structure. |
| 저자 | 이명기, 김기은, 곽우철, 노경민, 김민석, 김강일, 유민규, 성윤모 |
| 소속 | 고려대 |
| 키워드 | ZnO; noble metal; PL; SPR |
