"Photovoltaic response of Carissa spinarum berry extract in dye-sensitized solar cell".

The presented work deals with the titanium dioxide semiconductor-based dye-sensitized solar cell (DSSC) performance analysis. The DSSC is sensitized with natural dye extracted from Carissa spinarum fruit with iodide-Tri-iodide as an electrolyte and graphite coated transparent conducting oxide as back electrode. The dye characteristics were investigated by Fourier transform infrared, ultraviolet-visible, and photoluminescence spectroscopy to study the associated functional groups, optical band gap, and emission, respectively.

Amorphization and disorder of PrFeO3 thin films after heavy ion irradiation.

We present structural, morphological, optical absorption and Raman study of 200 MeV Ag(15+) ion irradiated PrFeO(3) thin film of around 200 nm thickness deposited on LaAlO(3) [001] substrate by using the pulsed laser deposition technique. X-ray diffraction studies shows that it has an orthorhombic structure with Pbnm space group and is grown with (001)-orientation. The substrate-induced strain is found to be small and is found to increase for ion fluence.