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Linkam Reports on the Temperature-Controlled Microscopy Characterisation of Perovskite Materials for Photovoltaics

publication date: Mar 5, 2018
author/source: Linkam Scientific Instruments Limited

Linkam HFS600

Market leaders in temperature-controlled microscopy and leaders in sample characterization solutions, Linkam Scientific Instruments, reports on work from users in Singapore and Swansea to characterize perovskites, an exciting material with increasing numbers of applications in photovoltaics.

Linkam was a sponsor of the 2018 International Conference on Perovskite Thin Film Photovoltaics in Rennes. France. Perovskites have been found to have incredible electric, magnetic and superconducting properties. The flexibility of the bond angles and the ability to incorporate ions allows engineering of different perovskite materials. It is these properties which make perovskites attractive for a variety of different applications in microelectronics and semiconductor research such as photovoltaics.

The accurate temperature control and ability to combine with other analytical techniques such as Raman microscopy makes Linkam stages ideal for the study of perovskites. Linkam have been creating sample characterisation solutions for the microelectronics and semiconductor field for many years. They design stages with accurate temperature control ranging from -196 °C to 1500 °C. The environment within the chamber can also be controlled, with the options of gas purging, controlled vacuum, pressure or humidity. To accommodate for electrical measurements, stages can also be fitted with a variety of electrical output connectors and gold tipped tungsten needle probes.

Examples of this application include work from a group in the College of Engineering at Swansea University1 who employ a Linkam RH95 Humidity Generator and THMS600-H stage to conduct in-situ Raman Spectroscopy to study the degradation kinetics of perovskite materials when subjected to changes in temperature and humidity. Analysis of Raman peaks in the thermodegradation and dehydration processes help determine how to improve perovskite performance in future applications.

A Linkam probe stage, the HFS600E-PB4, was used by a team led from the National University of Singapore2 to study angular momentum states of perovskite materials. Again, the set-up was shown to be ideal for performing low temperature Raman spectroscopy whilst probing the decay of angular momentum states.

For information on Linkam's range of thermo-electrical characterisation products along with other temperature and environmental control materials characterisation solutions, click here to visit the web site.

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