“…It is well known that SnO 2 is a semiconductor that crystallizes in a tetragonal rutile structure [3]. SnO 2 films were grown by various processes like chemical precipitation route [4], chemical vapor deposition (CVD) [5], sputtering [6,7], sol-gel [8], pulsed laser deposition (PLD) [9], and spray pyrolysis deposition (SPD) [2,10,11]. This latter is a chemical deposition technique in which fine droplets of a solution containing desired species are sprayed on a preheated substrate.…”