An intermediate band dye-sensitised solar cell using triplet–triplet annihilation. Issue 38 (7th September 2015)

• Record Type: Journal Article
• Authors: Simpson, Catherine; Clarke, Tracey M.; MacQueen, Rowan W.; Cheng, Yuen Yap; Trevitt, Adam J.; Mozer, Attila J.; Wagner, Pawel; Schmidt, Timothy W.; Nattestad, Andrew
• Is Part Of: Physical chemistry chemical physics. Volume 17:Issue 38(2015)
• Page Start: 24826
• Page End: 24830
• Publication Date: 2015-09-07
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c5cp04825g
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : A new mechanism of charge photogeneration is demonstrated for the first time, based on organic molecular structures. Abstract : A new mechanism of charge photogeneration is demonstrated for the first time, based on organic molecular structures. This intermediate band approach, integrated into a dye-sensitised solar cell configuration is shown to generate charges upon illumination with low energy photons. Specifically 610 nm photoexcitation of Pt porphyrins, through a series of energy transfer steps and triplet–triplet annihilation, excites a higher energy absorption onset molecule, which is then capable of charge injection into TiO2 . Transient absorption measurements reveal further detail of the processes involved.