A Bis(tridentate) cobalt Polypyridine Complex as Mediator in Dye-Sensitized Solar Cells

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Andreas KC Mengel
  • Woohyung Cho
  • Aaron Breivogel
  • Kookheon Char
  • Yong Soo Kang
  • Katja Heinze
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000359296600010&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1002/ejic.201500252
eISSN
1099-0682
Externe Identifier
  • Clarivate Analytics Document Solution ID: CO6WB
ISSN
1434-1948
Ausgabe der Veröffentlichung
20
Zeitschrift
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Schlüsselwörter
  • Solar cells
  • Dyes
  • Sensitizers
  • Electron transfer
  • Redox mediators
  • Cobalt
  • Ruthenium
Paginierung
3299 - 3306
Datum der Veröffentlichung
2015
Status
Published
Titel
A Bis(tridentate) cobalt Polypyridine Complex as Mediator in Dye-Sensitized Solar Cells
Sub types
  • Article

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:title>Abstract</jats:title><jats:p>Dye‐sensitized solar cells equipped with cationic and neutral Ru<jats:sup>II</jats:sup>‐based sensitizers [Ru(ddpd){tpy(COOH)<jats:sub>3</jats:sub>}]<jats:sup>2+</jats:sup> [<jats:bold>1</jats:bold><jats:sup>2+</jats:sup>; ddpd =<jats:italic> N</jats:italic>,<jats:italic>N′</jats:italic>‐dimethyl‐<jats:italic>N</jats:italic>,<jats:italic>N′</jats:italic>‐di(pyridin‐2‐yl)pyridin‐2,6‐diamine, tpy(COOH)<jats:sub>3</jats:sub> = 2,2″6′,2″‐terpyridine‐4,4′,4″‐tricarboxylic acid] and [Ru(ddpd){tpy(COOH)(COO)<jats:sub>2</jats:sub>}] (<jats:bold>2</jats:bold>) with and without the coadsorbent chenodeoxycholic acid were constructed with I<jats:sub>3</jats:sub><jats:sup>–</jats:sup>/I<jats:sup>–</jats:sup> or the Co<jats:sup>III/II</jats:sup>‐based redox mediators [Co(bpy)<jats:sub>3</jats:sub>]<jats:sup>3+/2+</jats:sup> (<jats:bold>3</jats:bold><jats:sup>3+/2+</jats:sup>; bpy = 2,2′‐bipyridine) and [Co(ddpd)<jats:sub>2</jats:sub>]<jats:sup>3+/2+</jats:sup> (<jats:bold>4</jats:bold><jats:sup>3+/2+</jats:sup>) in the presence of LiClO<jats:sub>4</jats:sub> and 4‐<jats:italic>tert</jats:italic>‐butylpyridine. The best photovoltaic performance was achieved by using the <jats:bold>4</jats:bold><jats:sup>3+/2+</jats:sup> shuttle and the neutral sensitizer <jats:bold>2</jats:bold> without coadsorbent. The higher short‐circuit photocurrent density and higher electron recombination lifetimes obtained with this combination suggest slow electron recombination kinetics at the TiO<jats:sub>2</jats:sub> surface with the Co<jats:sup>III</jats:sup> complex <jats:bold>4</jats:bold><jats:sup>3+</jats:sup>. The slow electron transfer to <jats:bold>4</jats:bold><jats:sup>3+</jats:sup> is tentatively ascribed to the high‐lying π* orbitals of the electron‐rich ddpd ligands, which result in a weak electronic coupling. This contrasts with the faster recombination with <jats:bold>3</jats:bold><jats:sup>3+</jats:sup>, which features the low‐energy π* orbitals of the bpy ligands.</jats:p>
Autoren
  • Andreas KC Mengel
  • Woohyung Cho
  • Aaron Breivogel
  • Kookheon Char
  • Yong Soo Kang
  • Katja Heinze
DOI
10.1002/ejic.201500252
eISSN
1099-0682
ISSN
1434-1948
Ausgabe der Veröffentlichung
20
Zeitschrift
European Journal of Inorganic Chemistry
Sprache
en
Online publication date
2015
Paginierung
3299 - 3306
Datum der Veröffentlichung
2015
Status
Published
Herausgeber
Wiley
Herausgeber URL
http://dx.doi.org/10.1002/ejic.201500252
Datum der Datenerfassung
2023
Titel
A Bis(tridentate)cobalt Polypyridine Complex as Mediator in Dye‐Sensitized Solar Cells
Ausgabe der Zeitschrift
2015

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