Halide perovskites show promise as thermoelectric material

Halide perovskites have been proposed as affordable alternatives to existing thermoelectric materials, but research into their suitability for thermoelectric applications has been limited.

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In this study, published in Nature Communications, scientists at from Queen Mary University of London (QMUL) conducted experiments on thin films of the halide perovskite - caesium tin iodide - to test its ability to produce electrical current from heat. The researchers found they were able to improve the materials' thermoelectric properties through methods that involved partial oxidation and the introduction of additional elements into the material.

In a statement, Dr Oliver Fenwick, lead Royal Society University Research Fellow and lecturer in materials science at QMUL, said: "For many years halide perovskites have been suggested as promising thermoelectric materials. But whilst simulations have suggested good thermoelectric properties real experimental data hasn't met these expectations.