% reductions 1 Catalyst activity 1 Charge transfer 1 Comparatives studies 1 Corrosion resistance 1 Counter electrode 1 Counter electrodes 1 Cyclic voltammetry 1 Dimethylformamide 1 Dye- sensitized solar cells 1 Dye-sensitized solar cells 1 Electrochemical impedance spectroscopy 1 Electrodes 1 Energy dispersive X ray spectroscopy 1 Energy dispersive spectroscopy 1 FeSe2 1 Field emission microscopes 1 High resolution transmission electron microscopy 1 Iron compounds 1 Mild hydrothermal method NiSe2 1 Nickel compounds 1 Organic solvents 1 Polyelectrolytes 1 Potassium hydroxide 1 Scanning electron microscopy 1 Selenides 1 Selenium compounds 1 Simple++ 1 Solar power generation 1