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Electron Kinetics in Dye Sensitized Solar Cells Employing Anatase with (101) and (001) Facets
ASCR, Czech Republic; Charles University of Prague, Czech Republic.
Swiss Federal Institute Technology, Switzerland.
ASCR, Czech Republic; Charles University of Prague, Czech Republic.
ASCR, Czech Republic.
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2015 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 160, 296-305 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Elsevier , 2015. Vol. 160, 296-305 p.
Keyword [en]
Titanium dioxide anatase; dye-sensitized solar cell; electrochemical impedance spectroscopy; electron transport; nanoparticles
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-117207DOI: 10.1016/j.electacta.2015.02.016ISI: 000351115900040OAI: oai:DiVA.org:liu-117207DiVA: diva2:807116
Note

Funding Agencies|Sciex-NMSch programme [12.376]; Grant Agency of the Czech Republic [13-07724S, P108/12/0814]; European Research Council (ERC) for an Advanced Research Grant (ARG) [247404]; Swedish Research Council Linnaeus grant LiLi-NFM

Available from: 2015-04-22 Created: 2015-04-21 Last updated: 2017-12-04

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Liu, Xianjie

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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  • Other style
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  • de-DE
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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