20.500.12556/RUL-159119 The effect of Al$_2$O$_3$ on the performance of perovskite solar cells Improving the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs) remain the two most important goals of perovskite research. Herein, the effects of Al$_2$O$_3$ interlayer on the performance of formamidinium-cesiums and “triple cation” PSCs by depositing a thin Al$_2$O$_3$ layer via atomic layer deposition on different interfaces are analyzed. It is found that it can efficiently serve as a passivation layer of perovskite absorber, as a seed layer for the compact growth of the subsequent SnO$_2$ layer, or as a capping layer to the whole cell in the superstrate configuration to prevent moisture ingress. The optimized devices utilizing Al$_2$O$_3$ have on average more than 1% absolute higher PCE, with reduced penetration of moisture inside the device. Especially, the capping layer has shown the greatest benefit, extending the stability of the devices by more than two times and allowing long-term operation without encapsulation. In the best case, a T$_{80}$ time of almost 900 h under day/night-cycling illumination is obtained. The observed trends are based on data from a large number of devices (more than 300 devices were tested in the maximum power point), which give statistical relevance to the promising results. perovskites perovskite solar cells long-term stability Al$_2$O$_3$ moisture MPP tracking true false true Angleški jezik Slovenski jezik Članek v reviji 2024-07-01 08:32:29 2024-07-01 08:32:30 2024-07-12 03:35:32 0000-00-00 00:00:00 2024 0 0 9 str. iss. 12, art. 2400247 Vol. 8 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 5 2367-198X 10.1002/solr.202400247 197486339 Solar_RRL_-_2024_-_Ajdic_-_The_Effect_of_Al2O3_on_the_Performance_of_Perovskite_Solar_Cells.pdf Solar_RRL_-_2024_-_Ajdic_-_The_Effect_of_Al2O3_on_the_Performance_of_Perovskite_Solar_Cells.pdf 1 848245B4EB47E640D849EC12075505E8 4d08ca5f57e603e45711ac73ebe5d3f3b8d67b5a255bee7702dadf38532d63ec 3a1cb4e0-3774-11ef-a093-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=187009 https://onlinelibrary.wiley.com/doi/10.1002/solr.202400247 0 0d944af9-3774-11ef-a093-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=187008 Fakulteta za elektrotehniko 0 0 0