Role of side groups in pyridine and bipyridine ruthenium dye complexes for modulated surface photovoltage in nanoporous TiO2
Küçük Resim Yok
Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The influence of molecular side groups on the electron backtransfer into ruthenium-dye molecules adsorbed on ultra-thin nanoporous TiO2 layers has been investigated by modulated surface photovoltage spectroscopy in argon atmosphere. All ruthenium-dye molecules contained one bipyridine (bpy) ligand with two carboxylic groups for anchoring at the TiO2 surface. Ruthenium (II) complexes with a second bpy ligand with branching and non-branching side groups containing C and H only and ruthenium (II) complexes with a second pyridine (py) ligand with side groups containing different numbers of -C-O-C- sequences were synthesized. The electron backtransfer was practically not affected by branching or non-branching side groups in the bpy-bpy complexes. In contrast, electron backtransfer was much less for bpy-py complexes in comparison to bpy-bpy complexes and increased strongly with increasing number of -C-O-C- sequences in the side groups. (C) 2009 Elsevier B.V. All rights reserved.
Açıklama
Symposium on Mesoscopic Dye Sensitized and Organic Heterojunction Solar Cells held at the e-MRS 2009 Spring Meeting -- 2009 -- Strasbourg, FRANCE
Anahtar Kelimeler
Ruthenium (II) complex, Surface photovoltage spectroscopy, Electron backtransfer, Titanium dioxide
Kaynak
Solar Energy Materials and Solar Cells
WoS Q Değeri
Q1
Scopus Q Değeri
Cilt
94
Sayı
4
