Premium
Cover Picture: Triarylamine‐Functionalized Ruthenium Dyes for Efficient Dye‐Sensitized Solar Cells (ChemSusChem 11/2008)
Author(s) -
Jin Zhengzhe,
Masuda Hideki,
Yamanaka Noriyo,
Minami Masaki,
Nakamura Tsutomu,
Nishikitani Yoshinori
Publication year - 2008
Publication title -
chemsuschem
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.200890032
Subject(s) - dye sensitized solar cell , ruthenium , photochemistry , homo/lumo , electrolyte , energy conversion efficiency , excited state , materials science , density functional theory , electron transfer , absorption (acoustics) , chemistry , optoelectronics , electrode , computational chemistry , organic chemistry , molecule , catalysis , atomic physics , physics , composite material
The cover picture shows a scheme for a solar cell sensitized by a triarylamine‐functionalized ruthenium dye "J6". To engineer an efficient sensitizer, the LUMO of the dye must be sufficiently high in energy to promote efficient charge injection into the TiO 2 film and the HOMO should be sufficiently low in energy for efficient regeneration of the oxidized dye by the hole‐transport material/electrolyte. In their Communication on page 901 ff., H. Masuda et al. report a high photon‐to‐electricity conversion efficiency for the DSSC based on J6. Results from density functional theory calculations suggest that the absorption in the visible region originates from metal‐to‐ligand charge‐transfer transitions from Ru(NCS) 2 to the anchoring bipyridyl ligand, leading to efficient electron transfer from the excited dye to the TiO 2 conduction band (CB).