پديد آورنده :
زارعي مقدم، رضا
عنوان :
طراحي، ساخت و سخت سازي پوشش نابازتابنده چندلايه بر بستره سولفيد روي در ناحيه طول موجي 8 تا 12 ميكرومتر
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده فيزيك
صفحه شمار :
ده، 125ص.: مصور
استاد راهنما :
حسين احمدوند
استاد مشاور :
محمد جان نثاري لاداني
توصيفگر ها :
لايه نشاني تبخير فيزيكي
تاريخ نمايه سازي :
1394/09/16
استاد داور :
جواد هاشمي فر، حميده شاكري پور
تاريخ ورود اطلاعات :
1396/10/06
چكيده انگليسي :
123Design fabrication and hardening of multi layer anti reflection coating in the range 8 12 m on zinc sulfide substrate Reza Zarei Moghadam r zareimoghadam@ph iut ac ir Date of Submission 2015 09 16 Department of Physics Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Dr Hossein Ahmadvand ahmadvand@cc iut ac irAbstract The present thesis aimed to design fabrication and hardening of multi layersbroadband anti reflection coating in the range from 8 to 12 m by using germanium andzinc sulfide on zinc sulfide substrate We selected Ge as high index material and ZnS aslow index material The design was performed by the Essential Macleod program Theoptimization was performed by the simplex method in which the desired transmission isobtained by changing the thickness of the layers Deposition was performed by physical vapor deposition PVD technique in avacuum chamber by using electron gun and thermal boat The arrangement andoptimized thickness of the layers in the fabricated antireflection coating are as follows ZnS substrate Ge 162 nm ZnS 395 nm Ge 551 nm ZnS 1293 nm The coating wasstudied by FTIR nanoindentation AFM and environmental tests The FTIR spectroscopyshows that the coating increases the IR transmission by about 22 26 An averagetransmittance of 93 was achieved in the wavelength range of 8 12 m In the next step in order to improve the mechanical properties of the coating wedeposited a bilayer of Y2O3 Carbon on the coating Nanoindentation test shows that thebilayer enhances the mechanical properties Finally the environmental analyzes such asabrasion adherence salt spray thermal shock and humidity were performed on thecoating The results show that the four layers coating with the protective bilayer ofY2O3 Carbon has successfully passed durability and environmental tests Keywords Multilayers antireflection coating ZnS substrate physical vapordeposition PVD Transmittance Infrared Germanium Zinc sulphide Nanoindentation
استاد راهنما :
حسين احمدوند
استاد مشاور :
محمد جان نثاري لاداني
استاد داور :
جواد هاشمي فر، حميده شاكري پور
