A Highly Efficient Solar Cell Made from a Dye-Modified ZnO-Covered TiO2 Nanoporous Electrode
Citations Over TimeTop 1% of 2001 papers
Abstract
A photoelectrochemical solar cell based on porous ZnO-covered TiO2 film has been fabricated with ruthenium bipyridyl complex as the sensitizer. The cell generated a short-circuit photocurrent of 21.3 mA cm-2 and an open-circuit voltage of 712 mV under irradiation of 81.0 mW cm-2 white light from a xenon lamp with an overall conversion efficiency of 9.8%. Compared with the pure TiO2 (anatase) film, the ZnO-covered TiO2 film possesses more outstanding ability to transport electrons with an overall power conversion efficiency increase by 27.3%. Optical elctrochemical studies show that surface modification of TiO2 with ZnO can increase the concentration of free electrons in the conduction band of TiO2. This result implies that the charge recombination is reduced in the process of electron transport through the porous network, which can decrease the photocurrent loss and hence improve both short-circuit photocurrent and open-circuit photovoltage.
Related Papers
- → The optical properties of nanoporous structured titanium dioxide and the photovoltaic efficiency on DSSC(2010)77 cited
- → Performance Degradation of Dye-Sensitized Solar Cells Induced by Electrolytes(2012)30 cited
- → A Sol-solvothermal Processed ‘Black TiO2’ as Photoanode Material in Dye Sensitized Solar Cells(2017)29 cited
- → Improved Open-Circuit Voltage of Dye-Sensitized Solar Cells with LiNO3-Incorporated Titanium Dioxides(2013)
- → Role of titania photoanode phase on the performance of the Dye Sensitized Solar Cell(2023)