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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/17207

Title: Functionalization of Boron-Doped Nanocrystalline Diamond with N3 Dye Molecules
Authors: YEAP, Weng Siang
Liu, X.
BEVK, David
Pasquarelli, A.
LUTSEN, Laurence
Fahlman, M.
MAES, Wouter
HAENEN, Ken
Issue Date: 2014
Publisher: AMER CHEMICAL SOC
Citation: ACS APPLIED MATERIALS & INTERFACES, 6 (13), p. 10322-10329
Abstract: N3 dye molecules [cis-bis(isothiocyanato)bis(2,2'-bipyridyl-4,4'-dicarboxylato)ruthenium(II)] are covalently attached to boron-doped nanocrystalline diamond (B:NCD) thin films through a combination of coupling chemistries, i.e., diazonium, Suzuki, and EDC-NHS. X-ray and ultraviolet photoelectron spectroscopy and near-edge X-ray absorption fine structure spectroscopy are used to verify the covalent bonding of the dye on the B:NCD surface (compared to a hydrogen-terminated reference). The spectroscopic results confirm the presence of a dense N3 chromophore layer, and the positions of the frontier orbitals of the dye relative to the band edge of the B:NCD thin film are inferred as well. Proof-of-concept photoelectrochemical measurements show a strong increase in the photocurrent compared to non-dye-functionalized B:NCD films. This study opens up the possibility of applying N3-sensitized B:NCD thin films as hole conductors in dye-sensitized solar cells.
Notes: [Yeap, W. S.; Bevk, D.; Maes, W.; Haenen, K.] Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. [Liu, X.; Fahlman, M.] Linkoping Univ, Dept Phys Chem & Biol, S-58183 Linkoping, Sweden. [Bevk, D.; Lutsen, L.; Maes, W.; Haenen, K.] IMEC VZW, IMOMEC, B-3590 Diepenbeek, Belgium. [Pasquarelli, A.] Univ Ulm, Inst Electron Devices & Circuits, D-89069 Ulm, Germany.
URI: http://hdl.handle.net/1942/17207
DOI: 10.1021/am501783b
ISI #: 000338979900049
ISSN: 1944-8244
Category: A1
Type: Journal Contribution
Validation: ecoom, 2015
Appears in Collections: Research publications

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