An international team of researchers led by Kyushu University and Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, has demonstrated stable, continuous lasing at room temperature for over an hour perovskite materials by managing to overcome a phenomenon that has so far prevented such long operation.

Recent developments in perovskite research have made them attractive for lasers because they can be fabricated from solution at low cost to have tunable colors and excellent stability, but a phenomenon termed lasing death causes lasing under constant operation at room temperature to stop after a few minutes for reasons that have been unclear.

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A team of scientists, led by the Toda Research Center at Tokyo Chemical Industry Company Limited (TCI) and Kyoto University, has designed and synthesized a series of cost-effective hole-transporting materials (TOP-HTMs) for perovskite solar cells.

The newly designed materials were successful in realizing high power conversion efficiencies (PCEs) both with and without additives. In addition, the resulting solar cell that was fabricated using these materials showed impressively high stability.