반응 용기법을 이용한 InP/ZnS 양자점 합성과정에서 InP 코어의 성장기구
Growth mechanism of InP and InP/ZnS synthesis using colloidal synthesis
2
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
This study investigates the main growth mechanism of InP during InP/ZnS reaction of quantum dots (QDs). The size of the InP core, considering a synthesis time of 1-30 min, increased from the initial 2.56 nm to 3.97 nm. As a result of applying the proposed particle growth model, the migration mechanism, with time index 7, was found to be the main reaction. In addition, after the removal of unreacted In and P precursors from bath, further InP growth (of up to 4.19 nm (5%)), was observed when ZnS was added. The full width at half maximum (FWHM) of the synthesized InP/ZnS quantum dots was found to be relatively uniform, measuring about 59 nm. However, kinetic growth mechanism provides limited information for InP / ZnS core shell QDs, because the surface state of InP changes with reaction time. Further study is necessary, in order to clearly determine the kinetic growth mechanism of InP / ZnS core shell QDs.
Abstract
This study investigates the main growth mechanism of InP during InP/ZnS reaction of quantum dots (QDs). The size of the InP core, considering a synthesis time of 1-30 min, increased from the initial 2.56 nm to 3.97 nm. As a result of applying the proposed particle growth model, the migration mechanism, with time index 7, was found to be the main reaction. In addition, after the removal of unreacted In and P precursors from bath, further InP growth (of up to 4.19 nm (5%)), was observed when ZnS was added. The full width at half maximum (FWHM) of the synthesized InP/ZnS quantum dots was found to be relatively uniform, measuring about 59 nm. However, kinetic growth mechanism provides limited information for InP / ZnS core shell QDs, because the surface state of InP changes with reaction time. Further study is necessary, in order to clearly determine the kinetic growth mechanism of InP / ZnS core shell QDs.
참고문헌 (15)
- V. L. Colvin, , Nature, 370, pp.354~ (1994)
- H. S. Hong, , J. Korean Powder Metall. Inst., 19, pp.451~ (2012)
- J. Lovrić, , Chem. Biol., 12, pp.1227~ (2005)
- O. I. Micic, , J. Phys. Chem., 98, pp.4966~ (1994)
- S. Haubold, , Chem. Phys. Chem., 2, pp.331~ (2001)
- S. Adam, , J. Chem. Phys., 123, pp.084706~ (2005)
- W. S. Song, , J. Nanopart. Res., 15, pp.1750~ (2013)
- W. W. Yu, , Chem. Mater., 15, pp.2854~ (2003)
- O. I. Mićić, , J. Phys. Chem. B, 101, pp.4904~ (1997)
- K. Fuwa, , Anal. Chem., 35, pp.942~ (1963)
- J. D. Dow, , J. Vac. Sci. Technol. B, 20, pp.659~ (1982)
- B. S. Kim, , J. Korean Powder Metall. Inst., 7, pp.237~ (2000)
- P. J. F. Harris, , J. Catal., 82, pp.127~ (1983)
- U. T. D. Thuy, , Dalton Trans., 42, pp.12606~ (2013)
- R. Xie, , J. Am. Chem. Soc., 131, pp.15457~ (2009)