Abstract
We report a simple, eco-friendly facile wet chemical route for the synthesis of pristine and rare–earth metal co-doped (Er/Yb, 10/90, 15/85, 20/80) nano-crystalline, strontium stannate (SrSnO3) whiskers. It is n-type wide bandgap (~4.1 eV) orthorhombic perovskite semiconductor at room temperature, and reveals increase in band gap with the increase in Er/Yb content (from 4.10 to 4.23, 4.30 to 4.39 eV). The samples exhibited strong emission around 365 nm following band-edge excitation by the wavelength of 290 nm. Further, strong up-conversion emission was observed in visible range at the excitation of wavelength 980 nm. The resistivity values were found to decrease with increase in the dopants Er/Yb concentration due to enhancement of charge carriers.
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This work was supported in part by SERB, Government of India (SB/FTP/ETA-243/2012, 2013-2016).
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Kumar, A., Sahrawat, V., Kumar, A.A. et al. Up-Conversion in Perovskite Strontium Stannate Nanocrystal Whiskers. Trans Indian Inst Met 70, 573–579 (2017). https://doi.org/10.1007/s12666-017-1051-8
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DOI: https://doi.org/10.1007/s12666-017-1051-8