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Related Experiment Video

Updated: May 5, 2026

Writing and Low-Temperature Characterization of Oxide Nanostructures

Writing and Low-Temperature Characterization of Oxide Nanostructures

Published on: July 18, 2014

Er³⁺-activated Ba₂V₂O₇ upconversion nanosheets for dual-mode temperature sensing.

Satish Kumar Samal¹, Sahana Kulkarni¹, Jyoti Yadav¹

¹Energy and Environment Unit, Institute of Nanoscience and Technology (INST), Mohali, Punjab, 140306, India. naidu245@gmail.com.

|March 22, 2024

Summary

This study synthesized Ba₂V₂O₇:Er³⁺ phosphors for non-contact temperature sensing. The material shows promising luminescence properties, making it suitable for luminescence intensity ratio (LIR) thermometry applications.

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Last Updated: May 5, 2026

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Area of Science:

Materials Science
Solid State Chemistry
Luminescence Spectroscopy

Background:

Non-contact thermometry using luminescence intensity ratio (LIR) is crucial.
Limited availability of sensitive Er³⁺-doped phosphors hinders progress.
Developing novel phosphors with enhanced luminescence and sensitivity is essential.

Purpose of the Study:

To synthesize and characterize Ba₂V₂O₇:Er³⁺ phosphors.
To investigate their upconversion and down-shifting luminescence properties.
To evaluate their potential for luminescence thermometry.

Main Methods:

Sol-gel synthesis aided by citric acid for Ba₂V₂O₇:Er³⁺.
Investigation of luminescence under UV and 980 nm laser excitation.
Analysis of luminescence intensity ratio (LIR) for temperature sensing.

Main Results:

Synthesized Ba₂V₂O₇:Er³⁺ phosphors exhibit pale green broadband emission under UV light (V₂O₇^2-) and green upconversion emission under 980 nm laser (Er³⁺).
The LIR between thermally coupled energy levels (TCELs) and non-thermally coupled energy levels (NTCELs) of Er³⁺ was analyzed.
The material demonstrated temperature-sensing capabilities.

Conclusions:

Ba₂V₂O₇:Er³⁺ phosphors are successfully synthesized via a sol-gel method.
The material exhibits distinct UV and NIR-excited luminescence, suitable for thermometry.
Ba₂V₂O₇:Er³⁺ nanosheets show potential for non-contact temperature sensing applications.