Publication date: 15th December 2025
Silicon solar cells currently dominate satellite power systems; however, they are expensive to manufacture and account for a substantial portion of the total satellite cost, thereby limiting the broader accessibility of space technologies. Given the sharp rise in satellite launches over the past five years, the sector is entering a period of exceptionally high demand. Perovskite solar cells (PSCs) offer a lightweight, low-cost alternative with high power conversion efficiencies and are emerging as strong candidates for next-generation space photovoltaics [1,2].
In this presentation, I will focus on the fabrication of slot-die-coated perovskite films on flexible plastic substrates using two annealing approaches: conventional conductive (hot-plate) annealing and rapid radiative annealing via intense pulsed light (IPL) [3]. The latter aims to accelerate scale-up and enable fast, continuous manufacturing of flexible PSCs. A comprehensive investigation of material and device properties was performed, revealing notable differences between the two approaches. Furthermore, the radiation tolerance of the resulting devices was assessed under ionizing radiation to evaluate their suitability for future space applications [4,5].
Hot-plate annealing relies on high-temperature ovens and long conveyor systems, which result in slow throughput and increased production costs. In contrast, IPL annealing delivers millisecond-scale thermal processing, enabling rapid, energy-efficient, and inline-compatible fabrication that is well suited for large-area production. The results show that IPL-annealed films exhibit enhanced structural and optoelectronic properties while achieving device performance comparable to, or potentially exceeding, that of conventionally annealed counterparts.
The performance of both hot-plate and IPL-annealed PSCs was evaluated before and after exposure to ionizing radiation, and the resulting degradation mechanisms were systematically analyzed.
This work was supported by scientific research grants from the Ministry of Science and Higher Education of the Republic of Kazakhstan (grant numbers: AP23483937 and AP19576154) and by the Nazarbayev University Collaborative Research Program (grant number 211123CRP1613).
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