Performance of triple-cation perovskite solar cells under different indoor operating conditionsJošt, Marko (Avtor) Ajdič, Žan (Avtor) Topič, Marko (Avtor) photovoltaicsperovskite solar cellsindoor operationLED light sourcesdetailed balance limitbandgap tuningstabilitydiodeselectrical conductivitypower conversion efficiencysolar cellsWe systematically analyze triple-cation perovskite solar cells for indoor applications. A large number of devices with different bandgaps from 1.6 to 1.77 eV were fabricated, and their performance under 1-sun AM1.5 and indoor white light emitting diode (LED) light was compared. We find that the trends agree well with the detailed balance limit; however, the devices near the optimal bandgap (1.77 eV) perform worse due to the lower perovskite quality. Instead, we achieve the highest power conversion efficiency (PCE) of 34.0% under 870 lx with 1.67 eV and Al$_2$O$_3$ passivation. The perovskite with a bandgap of 1.71 eV is not far behind, with a high $V_{OC}$ of 1.02 V. Measurements under different white LED color temperatures confirm that the highest PCE is achieved under the warmest colors. All measurements were carried out in a dedicated indoor setup that ensures the diffuse light typical of indoor environments and allows both short- and long-term measurements. In the best case, we observe no degradation during the 33-day test under simulated office conditions with regular switching on and off of the light and a $T_{80}$ of 30 days under continuous illumination. The results were obtained from multiple batches, which corroborates our findings and gives them statistical relevance.20242024-11-18 12:31:12Članek v reviji164941UDK: 621.383.51:549.641ISSN pri članku: 1944-8252DOI: 10.1021/acsami.4c14736COBISS_ID: 215382531sl