A comparative analysis of infra-red luminescence spectra of ZnSe crystals doped with Yb,Gd or Cr impurities |
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| Affiliation: | 1. Magnetics Initiative Life Care Research Center, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu 711-873, Republic of Korea;2. School of Materials Science and Engineering, Kyungpook National University, Daegu 41566, Republic of Korea;3. Department of Polymer Science and Engineering, Kyungpook National University, Daegu 41566, Republic of Korea;4. Resources & Materials Research Center, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Republic of Korea;5. Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu 711-873, Republic of Korea;1. Division of Physics, Vignan Lara Institute of Technology and Science, Guntur, Andhra Pradesh, India;2. Department of Chemistry (PG Studies), Shree Velagapudi Ramakrishna Memorial College, Guntur, Andhra Pradesh, India;3. PG Department of Chemistry, Dharma Appa Rao College (DARC), Nuzvid, Andhra Pradesh, India;4. NTRC- MCETRC, and Aarshanano Composite Technologies Pvt. Ltd., Guntur, Andhra Pradesh, India;5. Department of Material Science and Technology, University of Ruse “A. Kanchev”, Ruse, Bulgaria;6. BioServe Biotechnologies (India) Pvt. Ltd., Hyderabad, Telangana, India;7. Division of Chemistry, Vignan’s Foundation for Science, Technology and Research University (Vignan’s University), Guntur, Andhra Pradesh, India |
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| Abstract: | Infra-red (IR) photoluminescence (PL) spectra of ZnSe crystals doped with Yb, Gd rare-earth impurities and Cr impurity are investigated. The influence of stoichiometric deviation on the spectra is studied and the structure of complex IR PL bands is analysed. The good coincidence between the structures of IR PL spectra of the samples doped with Yb, Gd, and Cr is shown. Correlation between the component parts of the bands at 1 and 2 μm is found and possibility to control the composition of IR PL spectra by enrichment of the samples with Zn or Se is discussed. The models that explain the formation of complexes based on rare-earth and background Cr and Cu impurities, responsible for IR PL bands, are proposed. Keywords: IR luminescence, ZnSe, Rare-earth impurities, Cr impurity. |
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| Keywords: | IR luminescence ZnSe Rare-earth impurities Cr impurity |
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