TY - JOUR T1 - The investigation of PVA nanocomposite layers contained ZnSe nanoparticles synthesized with laser ablation TT - بررسی خواص لایه های نانو کامپوزیت PVA حاوی نانوذرات ZnSe تولید شده به روش کندوسوز لیزری JF - opsi JO - opsi VL - 20 IS - 0 UR - http://opsi.ir/article-1-358-en.html Y1 - 2014 SP - 889 EP - 892 KW - ZnSe KW - PVA KW - Nanoparticles KW - Nanocomposite KW - Laser Ablation N2 - In this paper nanocomposite thin films of ZnSe nanoparticles (NPs) embedded in PVA were produced and their properties were investigated. The ZnSe NPs has been synthesized by pulsed laser ablation of ZnSe bulk target immersed in distilled water using a 1064 nm, high frequency (Q-Switched) Nd:YAG laser. The crystal size was about 14.4 nm. NPs were combined by PVA with 5, 10 and 13 weight percent and coated on glass substrates. X-ray diffraction analysis indicates that NPs in layers were crystalline (zinc blend). The optical band gap of nanocomposite thin films has been studied by UV-Vis optical absorption spectroscopy. Accordingly, the corresponding optical band gaps (Eg) decrease by increasing the concentration of NPs (2.92-2.80 eV). The surface roughness was studied using AFM analysis for each layer M3 ER -