K. Ibrahim H, Salem RD . Optical Properties 0f poly vinyl alcohol ( PVA) doped with Ali Zarin Orange Azo Dye thin films prepared by cast method. JK-Physics [Internet]. 2012 Jun. 10 [cited 2024 May 18];4(1). Available from: https://journal.uokufa.edu.iq/index.php/jkp/article/view/7560