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Luminescence in Mn-doped CdS nanocrystals |
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| Authors: | Angshuman Nag Sameer Sapra Subhra Sen Gupta Ankita Prakash Ajit Ghangrekar N. Periasamy D. D. Sarma |
| Affiliation: | (1) Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560 012, India;(2) Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai, 400 005, India;(3) Centre for Advanced Materials, Indian Association for the Cultivation of Science, Kolkata, 700 032, India |
| Abstract: | We have synthesized Mn-doped CdS nanocrystals (NCs) with size ranging from 1.8–3 nm. Photoluminescence (PL) spectra of the doped NCs differ from that of the undoped NCs with an additional peak due to Mn d-d transitions. Electron paramagnetic resonance spectra along with X-ray absorption spectroscopy and PL spectra confirm the incorporation of Mn in the CdS lattice. The fact that emissions from surface states and the Mn d levels occur at two different energies, allowed us to study the PL lifetime decay behaviour of both kinds of emissions. |
| Keywords: | Luminescence doping semiconductor nanocrystals |
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