Green Route Synthesis of High Quality CdSe Quantum Dots

Anil Kumar Malik

Department of Physcs, Multanimal Modi College Modinagar, Uttar Pradesh, India.

e-mail: anilkmalik@gmail.com

Cadmium precursors with acetylacetonate, less toxic than Me₂Cd give one-step synthesis procedure for CdSe quantum dots (QDs). Powder X-ray diffraction shows hexagonal structure of QDs. TEM and HRTEM images of QDs reveal that they are almost mono disperse and size is of the order of  5 nm. It is observed that the precursor and reaction time affect size. The size of QDs increases with reaction time. The temporal growth was monitored by UV−Vis spectroscopy (up to 20 min).

Keywords: Cadmium selenide, X-ray diffraction, Temporal growth.

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