Electron Kinetics in Dye Sensitized Solar Cells Employing Anatase with (101) and (001) Facets

Barbora Laskova; Thomas Moehl; Ladislav Kavan; Marketa Zukalova; Xianjie Liu; Aswani Yella; Pascal Comte; Arnost Zukal; Mohammad Khaja Nazeeruddin; Michael Graetzel

doi:10.1016/j.electacta.2015.02.016

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Electron Kinetics in Dye Sensitized Solar Cells Employing Anatase with (101) and (001) Facets

Journal article

Peer reviewed

Electron Kinetics in Dye Sensitized Solar Cells Employing Anatase with (101) and (001) Facets

Barbora Laskova, Thomas Moehl, Ladislav Kavan, Marketa Zukalova, Xianjie Liu, Aswani Yella, Pascal Comte, Arnost Zukal, Mohammad Khaja Nazeeruddin and Michael Graetzel

Electrochimica acta, Vol.160, pp.296-305

01/04/2015

DOI: https://doi.org/10.1016/j.electacta.2015.02.016

Abstract

Electrochemistry

Physical Sciences

Science & Technology

Two phase-pure nanocrystalline anatase materials differing in the exposed crystal facets (001) or (101) are studied by electrochemical impedance spectroscopy and by transient photovoltage and photocurrent decay in dye sensitized solar cells. A larger chemical capacitance, indicating larger density of states, is observed for anatase (001). The presence of deep electron traps in (001) nanosheets is further confirmed by optical (UV-Vis) and photoemission (XPS, UPS) spectra. The difference in chemical capacitance indicates a slower diffusion of electrons in the (001) anatase material, but also a higher electron lifetime compared to (101) anatase material. (C) 2015 Elsevier Ltd. All rights reserved.

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Title: Electron Kinetics in Dye Sensitized Solar Cells Employing Anatase with (101) and (001) Facets
Creators - without role: Barbora Laskova - Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry
Thomas Moehl - École Polytechnique Fédérale de Lausanne
Ladislav Kavan - Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry
Marketa Zukalova - Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry
Xianjie Liu - Linköping University
Aswani Yella - École Polytechnique Fédérale de Lausanne
Pascal Comte - École Polytechnique Fédérale de Lausanne
Arnost Zukal - Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry
Mohammad Khaja Nazeeruddin - École Polytechnique Fédérale de Lausanne
Michael Graetzel - Federal Reserve
Publication Details: Electrochimica acta, Vol.160, pp.296-305
Publisher: Elsevier
Number of pages: 10
Grant note: Swedish Research Council Linnaeus grant LiLi-NFM 12.376 / Sciex-NMSch programme 13-07724S; P108/12/0814 / Grant Agency of the Czech Republic; Norwegian Agency for Development Cooperation - NORAD 247404 / European Research Council (ERC) for an Advanced Research Grant (ARG); European Research Council (ERC)
Identifiers: 9924924608331
Academic Unit: Prince Mohammad Bin Fahd University
Language: English
Resource Type: Journal article