Copper borate as a photocathode in p-type dye-sensitized solar cells. Issue 2 (24th December 2015)

• Record Type: Journal Article
• Authors: Jiang, Tengfei; Bujoli-Doeuff, Martine; Farré, Yoann; Blart, Errol; Pellegrin, Yann; Gautron, Eric; Boujtita, Mohammed; Cario, Laurent; Odobel, Fabrice; Jobic, Stéphane
• Is Part Of: RSC advances. Volume 6:Issue 2(2016)
• Page Start: 1549
• Page End: 1553
• Publication Date: 2015-12-24
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra24397a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Copper borate as a photocathode in p-type dye-sensitized solar cells. Abstract : p-Type dye-sensitized solar cells (p-DSSCs) have recently become a major research focus because coupling with n-type DSSCs yields highly efficient tandem DSSCs. Indeed many delafossite-like compounds appear as promising candidates for p-DSSCs due to their deep valence band position and high hole mobility. In this paper, the synthesis of CuBO2 was attempted by a facile sol–gel methodology. Then, the as-obtained particles were used to prepare photocathodes for p-DSSCs with DPP-NDI dye as sensitizer and tris(4, 4′-di- tert -butyl-2, 2′-bipyridine)cobalt(iii /ii ) as redox mediator. Due to the deeper valence band position compared with classical NiO photocathode, the "CuBO2 " based p-DSSC presents an open-circuit photovoltage ( V oc ) of 453 mV, which is 150 mV higher than that of NiO in the same conditions. The results show that "CuBO2 " is a potential alternative for NiO in p-DSSCs.