Optical Properties of the ZnS:Mn Crystal

Bang, Tae-Hwan; Choe, Sung-Hyu

doi:10.3938/npsm.63.1048

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2017

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“…또한 양자점 을 만들기 위한 공정법 또한 ZnS계 나노형광체는 인 체에 무해하며, 3.6 eV의 넓은 밴드 갭을 나타내어 전 이 금속 도핑을 통하여 발광 스펙트럼을 조절이 가능 하다는 장점이 있다 [3,4]. …”

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A Study on Photo-Luminescence Spectrum Properties of ZnS:Mn QD Prepared by Wet-Process

Min¹,

Lee²,

Moon³

et al. 2017

Journal of the Korean Institute of Electrical and Electronic Ma

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:In this study, the physical and optical properties of ZnS:Mn 2+ Quantum Dot prepared by wet-process condition with Mn/Zn ratio was valuated. The powder characteristics and optical behavior were investigated through XRD, TEM and Photo spectrometer exicted by various UV light source. We found the main peak of ZnS (111) was shifted by 0.8 degree to low angle position with increasing stirring energy from 200 RPM to 600 RPM, which is thought to be the increase of lattice defects during wet process. The photo luminescence at 600 RPM shows also higher blue intensity which is well correlated with XRD results. With increasing Mn/Zn ratio, the PL intensity become higher and shifed by 8.5nm to right side, by the increment of substitutional Mn 2+ ions.

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