The effect of vacuum and air annealing on the structural, optical and photoluminescence properties of ZnS" films

Priya, K and Rao, Gowrish K and Ali, Muhammed A V and Murari, M S and Sanjeev, Ganesh (2021) The effect of vacuum and air annealing on the structural, optical and photoluminescence properties of ZnS" films. Physica B, 619. ISSN 0921-4526

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Abstract

The!deposition!temperature!and!post deposition!heat!treatment!can!be!effectively!used!to!"ne!tune!the!structure! and!composition!of! the!"lms! to!obtain!desired!performance.! In! this!paper,!we!have! investigated! the!effect!of! elevated!substrate!temperature!and!post deposition!annealing!(in!air!and!vacuum)!on!the!properties!of!ZnS!"lms.! Both!the!tools!were!found!to!produce!considerable!changes!in!the!crystal!structure!of!the!"lms.!The!major!impact! was!found!to!be!an!increase!in!crystallite!size!which!effectively!reduced!the!defects.!Although!a!small!amount!of! tensile!stress!was!produced!as!a!side effect!of!heat!treatment,!the!"lms!remained!structurally!intact.!The!vacuum!annealing!was!found!to!be!far!more!productive!than!annealing!in!air.!It!produced!nearly!the!same!amount!of! improvement! in!the!crystallite!size,!but!with!considerably!less!tensile!stress.!Furthermore,!the!bandgap!of!the! "lms!remained!unaffected!by!vacuum!annealing.

Item Type: Article
Uncontrolled Keywords: Thin!"lm! II-VI! Semiconducting!Physical!vapor!deposition! Optical!properties! Microstructure
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 20 Jan 2022 06:22
Last Modified: 20 Jan 2022 06:22
URI: http://eprints.manipal.edu/id/eprint/158083

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