Ammonium iodide 1 Charge carrier relaxation Charge carriers 1 Correlated barrier hopping models 1 Dielectric losses 1 Dielectric properties 1 Dye-sensitized solar cells 1 Effects of temperature 1 Increasing temperatures 1 Open circuit voltage 1 Planning 1 Platinum counter electrodes 1 Poly(vinyl acetate) (PVAc) 1 Polyelectrolytes 1 Polymer solar cells 1 Relaxation time 1 Solar cells 1 Solid electrolytes 1 Solid polymer electrolytes 1 Solution-casting technique 1 Sustainable development 1 Temperature 1 Titanium castings 1 Titanium dioxide 1