We report a simple and rapid route for synthesis of CdSe quantum dots at low temperature of 150 degrees 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.