Low Temperature Synthesis of CdSe Nanocrystal Quantum Dots using Paraffin Oil

Abstract

We report a simple and rapid route for synthesis of CdSe quantum dots at low temperature of 150°C by using the paraffin oil as a solvent in place of the conventional trioctylphosphine and trioctylphosphine oxide. The CdSe QDs were synthesized as a function of the growth temperature. UV-vis and PL data show a narrow emission peak at 552 nm with absorption peak of 533 nm, implying a uniform size distribution. The CdSe QDs reveal large blue-shifts in both UV-vis and PL data under the low temperature conditions, due to the quantum confinement effect depending on the smaller particle size.

Keywords:

• Quantum dots
• CdSe
• nanocrystals
• paraffin oil
• low temperature synthesis

Acknowledgment

This work was supported by the Regional Innovation Center Program (ADMRC) of the Ministry of Knowledge Economy, Republic of Korea. This research was supported by Kyungpook National University Research Fund, 2012.