Interface‐Driven Thermoelectric Switching Performance of VO+‐Diffused Soda‐Lime Glass

Carmel Mary Esther Alphonse,Bonnie J Tyler,Gerhard Wilde,Mohan Muralikrishna Garlapati,Heinrich F Arlinghaus,Sergiy V Divinski

doi:10.1002/pssr.202100077

Carmel Mary Esther Alphonse, Bonnie J Tyler + Show 4 more

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https://doi.org/10.1002/pssr.202100077

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Abstract

Strongly confined NaVO+ segregation and its thermoresponsive functionality at the interface between simple sputter‐deposited amorphous vanadium oxide thin films and soda‐lime glass is substantiated in this work by in situ temperature‐controlled time‐of‐flight secondary‐ion mass spectrometry (ToF‐SIMS). The obtained ToF‐SIMS depth profiles provide unambiguous evidence for a reversible transformation that causes systematic switching of the NaVO+/Na+ and Na+/VO+ intensities upon cycling the temperature between 25 and 340 °C. Subsequently, NaVO complexes are found to be reversibly formed (at 300 °C) in vanadium oxide‐diffused glass, leading to thermoresponsive electrical behavior of the thin‐film glass system. This new segregation and diffusion‐dependent multifunctionality of NaVO+ point toward applications as an advanced material for thermoelectrical/optical switches, in smart windows or in thermal sensors.

Highlights

Vanadium oxide is one of the most promising and deeply studied materials in smart and energy materials applications
The present study focuses on the functional behaviour of cost-effectively sputter deposited vanadium oxide thin films on a commercial glass substrate such as soda-lime glass and a detailed investigation of the temperature-dependent reversible interactions of native elements in the amorphous vanadium pentoxide/soda-lime glass system by in-situ temperaturecontrolled Time-of-Flight Secondary-Ion Mass Spectrometry (ToF-SIMS)
The vanadium oxide thin film was sputter deposited on soda-lime glass as explained in the Materials and Methods section

Summary

Introduction

Vanadium oxide is one of the most promising and deeply studied materials in smart and energy materials applications. The present study focuses on the functional behaviour of cost-effectively sputter deposited vanadium oxide thin films on a commercial glass substrate such as soda-lime glass and a detailed investigation of the temperature-dependent reversible interactions of native elements in the amorphous vanadium pentoxide/soda-lime glass system by in-situ temperaturecontrolled Time-of-Flight Secondary-Ion Mass Spectrometry (ToF-SIMS).

Results

Conclusion