Published August 30, 2008
| Version v1
Journal article
Large improvement of electron extraction from CdSe quantum dots into a TiO2 thin layer by N3 dye coabsorption
- 1. Departament de Fisica, Universitat Jaume I, 12071 Castello (Spain)
- 2. Hahn-Meitner-Institute, Glienicker Str. 100, 14109 Berlin (Germany)
- 3. Photonics and Optoelectronics Group, Physics Department and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universitaet Muenchen, Amalienstr. 54, 80799 Munich (Germany)
Description
Extraction of electrons and holes photogenerated in CdSe quantum dots (QD) of 2.3 nm diameter, is monitored by Surface Photovoltage Spectroscopy. The extraction of electrons into a thin TiO2 layer increases five-fold by absorption of N3 dye molecules on top of the QD layer. This process is facilitated by efficient hole extraction from the valence band of the QDs to the ground state of the N3 dye. Our results represent a direct measurement of charge separation in the N3/QD/TiO2 system
Availability note (English)
Available from http://dx.doi.org/10.1016/j.tsf.2007.12.110Additional details
Identifiers
- DOI
- 10.1016/j.tsf.2007.12.110;
- PII
- S0040-6090(07)02038-X;
Publishing Information
- Journal Title
- Thin Solid Films
- Journal Volume
- 516
- Journal Issue
- 20
- Journal Page Range
- p. 6994-6998
- ISSN
- 0040-6090
- CODEN
- THSFAP
Conference
- Title
- EMRS 2007 conference on advanced materials and concepts for photovoltaics
- Dates
- 28 May - 1 Jun 2007
- Place
- Strasbourg (France)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40005963
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ABSORPTION; CADMIUM SELENIDES; ELECTRON BEAM INJECTION; ELECTRONS; EXTRACTION; GROUND STATES; HOLES; LAYERS; QUANTUM DOTS; SOLAR CELLS; SPECTROSCOPY; THIN FILMS; TITANIUM OXIDES
- Descriptors DEC
- BEAM INJECTION; CADMIUM COMPOUNDS; CHALCOGENIDES; DIRECT ENERGY CONVERTERS; ELEMENTARY PARTICLES; ENERGY LEVELS; EQUIPMENT; FERMIONS; FILMS; LEPTONS; NANOSTRUCTURES; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRIC CELLS; PHOTOVOLTAIC CELLS; SELENIDES; SELENIUM COMPOUNDS; SEPARATION PROCESSES; SOLAR EQUIPMENT; SORPTION; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.