Up-Conversion in Perovskite Strontium Stannate Nanocrystal Whiskers

Ashok Kumar; Vikas Sahrawat; Astakala Anil Kumar; Shashank Priya

doi:10.1007/s12666-017-1051-8

Up-Conversion in Perovskite Strontium Stannate Nanocrystal Whiskers

Ashok Kumar, Vikas Sahrawat, Astakala Anil Kumar, Shashank Priya

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

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.

Original language	English (US)
Pages (from-to)	573-579
Number of pages	7
Journal	Transactions of the Indian Institute of Metals
Volume	70
Issue number	3
DOIs	https://doi.org/10.1007/s12666-017-1051-8
State	Published - Apr 1 2017
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported in part by SERB, Government of India (SB/FTP/ETA-243/2012, 2013-2016).

Publisher Copyright:
© 2017, The Indian Institute of Metals - IIM.

Keywords

Chemical synthesis
Conductivity
Optical properties
Perovskite
Up–conversion

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10.1007/s12666-017-1051-8

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title = "Up-Conversion in Perovskite Strontium Stannate Nanocrystal Whiskers",

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.",

keywords = "Chemical synthesis, Conductivity, Optical properties, Perovskite, Up–conversion",

author = "Ashok Kumar and Vikas Sahrawat and Kumar, {Astakala Anil} and Shashank Priya",

note = "Funding Information: This work was supported in part by SERB, Government of India (SB/FTP/ETA-243/2012, 2013-2016). Publisher Copyright: {\textcopyright} 2017, The Indian Institute of Metals - IIM.",

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T1 - Up-Conversion in Perovskite Strontium Stannate Nanocrystal Whiskers

AU - Kumar, Ashok

AU - Sahrawat, Vikas

AU - Kumar, Astakala Anil

AU - Priya, Shashank

PY - 2017/4/1

Y1 - 2017/4/1

N2 - 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.

AB - 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.

KW - Chemical synthesis

KW - Conductivity

KW - Optical properties

KW - Perovskite

KW - Up–conversion

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JO - Transactions of the Indian Institute of Metals

JF - Transactions of the Indian Institute of Metals

IS - 3

ER -

Up-Conversion in Perovskite Strontium Stannate Nanocrystal Whiskers

Abstract

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