SrTiO3 Recombination-Inhibiting Barrier Layer for Type II Dye-Sensitized Solar Cells
Citations Over TimeTop 10% of 2010 papers
Abstract
Type II dye-sensitized solar cells (DSSCs) differ from conventional DSSCs by their mechanism of light absorption and electron injection. Instead of photoexcitation of the dye, followed by electron injection to the semiconductor conduction band, in type II DSSCs, there is a direct electron injection from the HOMO level of the sensitizer into the conduction band of the semiconductor. The main drawback of such cells is their extremely rapid back-electron-transfer rate. Herein, we present a new approach for inhibiting back electron transfer in a catechol-sensitized type II DSSC using a thin layer barrier coating of SrTiO3 between the semiconductor and the sensitizer. A 70% improvement in charge collection efficiency is reported. A proposed mechanism for the operation of the SrTiO3 barrier layer is presented.
Related Papers
- → Factors Affect Dye Sensitized Solar Cells performance(2017)10 cited
- → Deep-Level Defect Effects on the Low-Temperature Photoexcitation Process in CdZnTe Crystals(2019)4 cited
- → Potential Modulation of Semiconductor Dot Array System due to Photoexcitation(1999)3 cited
- Recent progress on tandem structured dye-sensitized solar cells(2012)
- → Investigation and optimization of dye-sensitized solar cells, under variable lighting conditions(2023)