Stable New Sensitizer with Improved Light Harvesting for Nanocrystalline Dye-Sensitized Solar Cells

✍ Scribed by P. Wang; S. M. Zakeeruddin; J. E. Moser; R. Humphry-Baker; P. Comte; V. Aranyos; A. Hagfeldt; M. K. Nazeeruddin; M. Grätzel

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 332 KB
• Volume: 16
• Category: Article
• ISSN: 0935-9648
• DOI: 10.1002/adma.200400039

✦ Synopsis

A constant current of typically 1 lA was applied between two platinum electrodes immersed in the solution in two compartments, separated by a glass frit.

X-Ray Crystallography: C 24 H 14 O 12 S 8 , M w = 748.83, hexagonal, space group P6 2 22 (or P6 4 22), a = 10.774(1) , c = 20.085(2) , V = 2119.6(2) 3 , Z = 3, crystal size 0.30 mm 0.15 mm 0.10 mm, l(Mo Ka) = 0.697 mm ±1 . Data were collected using a Rigaku RAXIS-RAPID diffractometer, equipped with an imaging plate area detector (graphite-monochromated Mo Ka radiation, k = 0.71075 , x-scan mode (2.0 steps), semi-empirical absorption correction). The structure was solved by direct methods, and refined by full-matrix leastsquares against F 2 of all data using the TeXsan program package. Hydrogen atoms, with the exception of those in carboxy groups, were included in the calculated positions, but were not refined. The position of the carboxy hydrogen was determined from the difference Fourier map and isotropically refined. All non-H atoms were refined anisotropically. The refinement converges with R 1 = 0.032 for 1340 data (I > 2a(I)), R w = 0.068 for all data (3.63 < h < 27.40), max/min residual electron density 0.28/±0.17 e 3 . [10]