Quantum dot sensitization of organic-inorganic hybrid solar cells

Details

Serval ID
serval:BIB_782FAA55107A
Type
Article: article from journal or magazin.
Publication sub-type
Letter (letter): Communication to the publisher.
Collection
Publications
Title
Quantum dot sensitization of organic-inorganic hybrid solar cells
Journal
Journal of Physical Chemistry B
Author(s)
Plass R., Pelet S., Krueger J., Grätzel M.
ISSN
1520-6106
Publication state
Published
Issued date
2002
Volume
106
Number
31
Pages
7578-7580
Language
english
Abstract
A high surface area pn-heterojunction between TiO2 and an organic p-type charge transport material (spiro-OMeTAD) was sensitized to visible light using lead sulfide (PbS) quantum dots. PbS quantum dots were formed in situ on a nanocrystalline TiO2 electrode using chemical bath deposition techniques.1 The organic hole conductor was applied from solution to form the sensitized heterojunction. The structure of the quantum dots was analyzed using HRTEM technique. Ultrafast laser photolysis experiments suggested the initial charge separation to proceed in the subpicosecond time range. Transient absorption laser spectroscopy revealed that interfacial charge recombination of the initially formed charge carriers is much faster than in comparable dye-sensitized systems.2,3 The sensitized heterojunction showed incident photon-to-electron conversion efficiencies (IPCE) of up to 45% and energy conversion efficiencies under simulated sunlight AM1.5 (10 mW/cm2) of 0.49%.
Create date
22/10/2012 13:05
Last modification date
20/08/2019 14:34
Usage data