Imaging the photovoltaic response of PbS-sensitized porous titania

Turyanska, Lyudmila and Makarovsky, O. and Elfurawi, U. and Patane, A. and Fay, M. W. and Bowers, J. W. and Upadhyaya, H. M. (2011) Imaging the photovoltaic response of PbS-sensitized porous titania. Physica Status Solidi (A) Applications and Materials Science, 208 (10). pp. 2450-2453. ISSN 1862-6300

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We report the photovoltaic response of solid-state devices based on porous TiO 2 photosensitized with PbS nanocrystals. A photovoltaic response in the visible and near infrared wavelength range is obtained by exploiting the Schottky junction that forms at the interface between the PbS/TiO 2 film and a metallic contact. Spatial images of the photoluminescence and of the short circuit photocurrent signal reveal a non-homogeneous response, which we explain in terms of the electron transfer dynamics at the PbS/TiO 2 interface and the morphological properties of TiO 2. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords:Colloidal quantum dots, Electron transfer dynamics, lead sulphide, Metallic contacts, Morphological properties, Non-homogeneous, PbS nanocrystal, Photovoltaic response, Porous TiO, Porous titania, Schottky junctions, Short-circuit photocurrent, Spatial images, TiO, Titania, Visible and near infrared, Electron transitions, Quantum theory, Semiconductor quantum wells, Solid state devices, Titanium dioxide, Photovoltaic effects
Subjects:F Physical Sciences > F310 Applied Physics
Divisions:College of Science > School of Chemistry
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ID Code:22522
Deposited On:06 Apr 2016 15:29

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