Abdul Majeed E.Ibrahim, Hasen Askar Kadhem and Amjad hossen jasem 2023. Study the effect resistivity slide and the time of etching on silicon surfaces morphology of producing photovoltaic method . Tikrit Journal of Pure Science. 21, 7 (Feb. 2023), 152–161. DOI:https://doi.org/10.25130/tjps.v21i7.1122.