Study of optical and structural properties of CdSe quantum dot embedded in PVA polymer matrix

Journal Article · Fri Aug 28 04:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4929271· OSTI ID:22488859

Tyagi, Chetna; Sharma, Ambika ^[1]

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1. Department of Applied Sciences ITM University, HUDA Sector-23 A, Gurgaon, 122017 (Haryana) INDIA (India)

To enhance the properties and applicability of devices it is essential to incorporate semiconductor nanoparticles into polymer matrix. This introduces a new branch of science which includes device fabrications such as gas sensors, nonlinear optics, catalysis etc. Herein, we have synthesized CdSe/PVA nanocomposite (NC) material using wet chemical synthesis technique. The XRD studies revealed the formation of crystalline structure of CdSe nanoparticles (NP’s) and PVA NC’s with an average size of 100 nm and 5 nm respectively. Energy band gap is determined using UV-VIS Spectroscopy. A red shift in the absorption edge of CdSe/PVA NC is observed with respect to CdSe Np’s, The photoluminescence spectra also show red shift for CdSe/PVA NC as compared to CdSe NP’s Thus the use of CdSe/PVA for solar cell application would be more preferable than CdSe NP’s.

• OSTI ID: 22488859
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1675; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION
ABSORPTION SPECTROSCOPY
CADMIUM SELENIDES
CATALYSIS
COMPARATIVE EVALUATIONS
MATRIX MATERIALS
NANOCOMPOSITES
NANOPARTICLES
NONLINEAR OPTICS
PHOTOLUMINESCENCE
PVA
QUANTUM DOTS
RED SHIFT
SEMICONDUCTOR MATERIALS
SOLAR CELLS
SYNTHESIS
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
X-RAY DIFFRACTION