Chemical synthesis of nonstoichiometric NiOx nanoparticles using different nickel salts and application as an additive or interface layer in photovoltaic device

Authors : Fatma Pınar CHOI

Pages : 13-25

View : 23 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The stoichiometric nickel oxide is an insulator while it becomes a p-type semiconductor with the presenceof divalent and trivalent states. Here nonstoichiometric nickel oxide nanoparticles insert ignore into journalissuearticles values(NiOxNPs); were synthesized viaa chemical route using two different starter salts; nickel chloride hexahydrate and nickel nitrate hexahydrate. Thenanoparticles were investigated by X-ray diffraction and transmission electron microscopy, scanning electron microscopy,to determine the crystal structure, morphology, and particle size. The effect of different nickel salts in the reaction andthe formation of NiOxnanoparticles were observed for the first time in the literature. Because of the high uniformityand stability, nitrate-based inks were employed as additives and interface layers for planar perovskite solar cells, usinga two-step deposition for regular insert ignore into journalissuearticles values(n-i-p); and one-step antisolvent washing method for inverted insert ignore into journalissuearticles values(p-i-n); configurations.Photovoltaic performances were improved in the case of NiOxapplied as an interface layer between P3HT and Ag forregular solar cells and both as an additive in sol-gel based NiOxand interface layer between HTL and perovskite ininverted solar cells.
Keywords : Nanoparticle synthesis, chemical precipitation, nonstoichiometric nickel oxide, nickel chloride hexahydrate, nickel nitrate hexahydrate, solar cells