A team of Australian scientists have produced perovskite solar cells which they claim is world first, getting it past heat and humidity tests of the International Electrotechnical Commission. Work was conducted at the University of New South Wales and supported by the government via the Australian Renewable Energy Agency. The cells passed three tests: temperature cycling between -40 °C and 85 °C; humidity combined with low temperature; and humidity combined with high temperature. All tests were applied repeatedly, including 75 days for the ‘Damp Heat’ test, during which the cells lost only 5% of their initial conversion efficiency. Normally, perovskite cells become unstable under the pressure of heat and humidity, releasing gas from their structures – ‘outgassing’ – degrading in…