Vats, Tanvi and Kumar, Sumit and Jain, Kiran (2014) Effect of surface treatment on the photovoltaic properties of titania nanorods and MEHPPV nanocomposites. Colloid and Polymer Science, 292 (11). pp. 3025-3031. ISSN 0303-402X

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In this work, anatase titanium dioxide (TiO2) nanorods (NRs) were synthesized by low-temperature hydrolysis of titanium tetraisopropoxide (TTIP) and using oleic acid (OA) as capping agent. The OA-capped titania NRs were then processed using surface ligand exchange by pyridine (Py). The two types of NRs, with different capping agents hence obtained, were blended with poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene] (MEHPPV) to prepare hybrid organic-inorganic nanocomposites. In order to elucidate the changes caused by the surface modifications, transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and X-ray diffraction were used to study the morphology. The Fourier transform infrared spectroscopy (FTIR) analysis confirms that the ligands coordinated with the Ti center of TiO2 NRs. The optical properties of the modified TiO2 NRs are characterized by UV-Vis absorption spectra and photoluminescence (PL) spectra. Photoluminescence lifetime studies were conducted to predict the capping agent more suitable for photovoltaic applications.

Item Type: Article
Additional Information: Copyright for this article belongs to M/S Springer Verlag.
Uncontrolled Keywords: Low-temperature hydrolysis Surface ligand exchange Hybrid organic–inorganic nanocomposites PL quenching and photoluminescence lifetime
Subjects: Chemistry
Polymer Science
Depositing User: Dr. Rajpal Walke
Date Deposited: 22 Sep 2015 11:01
Last Modified: 22 Sep 2015 11:01

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