Drying Mediated Aggregation Pattern of CdTe QDs towards the Fabrication of Molecular Devices
A. Arivarasan1, S. Bharathi2, S. Arunpandiyan3, S. Ezhil Arasi4, P. Devendran5
1A. Arivarasan, Department of Physics, Kalasalingam Academy of Research and Higher Education, Krishnankoil (Tamil Nadu), India.
2S. Bharathi, NGSeq Analytics LLC, San Diego, California, United States of America.
3S. Arunpandiyan, Department of Physics, Kalasalingam Academy of Research and Higher Education, Krishnankoil (Tamil Nadu), India.
4S. Ezhil Arasi, Department of Physics, Kalasalingam Academy of Research and Higher Education, Krishnankoil (Tamil Nadu), India.
5P. Devendran, Department of Physics, Kalasalingam Academy of Research and Higher Education, Krishnankoil (Tamil Nadu), India.
Manuscript received on 24 November 2019 | Revised Manuscript received on 18 December 2019 | Manuscript Published on 30 December 2019 | PP: 305-309 | Volume-9 Issue-1S4 December 2019 | Retrieval Number: A11701291S419/19©BEIESP | DOI: 10.35940/ijeat.A1170.1291S419
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Drying mediated self-aggregation patterns of CdTe colloidal QDs through simple evaporation method was reported. Thioglycolic acid (TGA) capped CdTe QDs were prepared in aqueous phase through colloidal route and their structural, optical and morphological behaviors were studied. The drying patterns of CdTe QDs were fabricated under a constant evaporation rate. The coffee ring effect and the drying pattern formations were studied for the TGA capped CdTe colloidal QDs suspension in an aqueous medium. The structural behavior of the CdTe QDs and the drying patterns were revealed by the X-ray diffraction analysis. The size-tunable optical properties of the prepared CdTe QDs were studied by the optical absorption and emission spectroscopy. The capping effects of TGA on CdTe QDs were confirmed by the FT-IR analysis. The surface morphology of the TGA capped CdTe QDs and the drying mediated aggregation patterns of CdTe colloidal suspension were studied by the scanning electron microscopy analysis. The drying mediated patterns from the evaporation technique were suggested as a simple technique for the fabrication of molecular devices.
Keywords: Colloidal Quantum Dots, Drying Patterns, Self-Aggregation, Evaporation Technique, SEM.
Scope of the Article: Optical Devices