title: Eu3+doped down shifting TiO2layer for efficient dye-sensitized solar cells.
abstract: Europium doped TiO2(TiO2:Eu3+) down-shifting (DS) nanophosphors (NPrs) were synthesized by the solution-combustion method with different concentrations of Eu3+. The X-ray diffraction results confirmed the formation of a polycrystalline tetragonal structure of the TiO2. The emission of colour of the TiO2:Eu3+DS NPr was tuned by varying the doping concentration of Eu3+. The photoluminescence results confirmed that the TiO2:Eu3+DS NPrs converted the UV light into visible light by energy down-conversion process, i.e. down-shifting of high energy UV photons to low energy visible photons. These TiO2:Eu3+DS NPrs were used to enhance the efficiency of the Dye sensitized solar cell from 8.32% to 8.80%.
authors: Photovoltaic Laboratory, Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India; Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa. Electronic address: vinod.phy@gmail.com.
authors: Vinod
authors: V
authors: Kumar
authors: Photovoltaic Laboratory, Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India.
authors: Sanjay Kumar
authors: SK
authors: Swami
authors: Photovoltaic Laboratory, Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India.
authors: Anuj
authors: A
authors: Kumar
authors: Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa.
authors: O M
authors: OM
authors: Ntwaeaborwa
authors: Photovoltaic Laboratory, Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India.
authors: Viresh
authors: V
authors: Dutta
authors: Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa.
authors: H C
authors: HC
authors: Swart
keywords: DSSC; Defects; Down-shifting; XPS