SrTiO3/TiO2 Hybridstructure as Photoanode in Dye‐Sensitized Solar Cell. Issue 12 (16th September 2013)

• Record Type: Journal Article
• Authors: Wang, Yu‐Shiuan; Chen, Ting‐Ting_; Huang, Yi‐Jen; Huang, Tzu‐Ping; Lee, Yin‐Yu; Chiu, Hsin‐Tien; Lee, Chi‐Young
• Is Part Of: Journal of the Chinese Chemical Society. Volume 60:Issue 12(2013:Dec.)
• Page Start: 1437
• Page End: 1441
• Publication Date: 2013-09-16
• Subjects: Chemistry -- Periodicals; Electronic journals; 540.5
• DOI: 10.1002/jccs.201300284
• Languages: English
• ISSNs: 0009-4536

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>In dye‐sensitized solar cells (DSSCs), the charge recombination at the TiO₂/dye/electrolyte interface greatly influences the photoelectron conversion efficiency. Hybrid semiconductor materials with matched band potentials are designed to reduce the charge recombination. In this study, SrTiO₃/TiO₂ hybridstructure was synthesized by using TiO₂ nanoparticles as template in a hydrothermal, showing a negative shift in the flat band potential. The DSSC with the SrTiO₃/TiO₂ anode exhibits an increased photovoltage and a reduced photocurrent. The suppression of charge recombination at the TiO₂/dye/electrolyte interface was observed in the electrochemical impedance spectroscopy, causing an improvement in the photovoltage. However, the SrTiO₃/TiO₂ system shows an obstructed electrons injection from the dye to SrTiO₃/TiO₂, limiting the photocurrent performance. The photoelectrochemical properties of the SrTiO₃/TiO₂ system are discussed in detail herein.</p> </abstract>