Abstract
We report the photovoltaic response of solid-state devices based on porous TiO2 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/TiO2 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/TiO2 interface and the morphological properties of TiO2. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Original language | English |
---|---|
Pages (from-to) | 2450-2453 |
Number of pages | 4 |
Journal | Physica Status Solidi (A) Applications and Materials Science |
Volume | 208 |
Issue number | 10 |
DOIs | |
Publication status | Published - Oct 2011 |
Keywords
- colloidal quantum dots
- lead sulphide
- Schottky junctions
- titania