Recent years have seen significant advancements in the stability of perovskite solar cells (PSCs), driven by various improvements in material selection, structural modifications, and fabrication processes. Despite achieving high power conversion efficiencies, stability remains a major challenge to their commercialization. Here are some key developments:
Advancements in Stability
- Structural Modifications and Fabrication Techniques: Researchers have explored various fabrication methods and structural modifications to enhance stability. This includes using hydrophobic hole transport materials (HTMs) which have shown significant improvements in device stability.
- Use of Dopants and Alternative Materials: Incorporating dopants like iridium complexes into the HTMs has been proposed as a strategy to boost stability. Additionally, replacing certain hygroscopic chemicals with more stable alternatives, such as spiro compounds instead of lithium salts, has improved device stability.
- Understanding Degradation Mechanisms: Studies have focused on understanding the degradation of perovskites, which often occurs due to exposure to water, oxygen, UV light, and high temperatures. Identifying these mechanisms helps in developing strategies to mitigate them.
- Perovskite Film Optimization: Optimizing the perovskite film quality and device architecture has been crucial. Techniques that produce high-quality, single-crystal-like perovskite films have demonstrated not only improved efficiency but also better stability under environmental stressors.
- Material Compatibility and Charge Transport: Enhancing compatibility between different layers in the device and improving charge transport properties have also contributed to better stability and performance of PSCs.
These advancements collectively move perovskite solar cells closer to commercial viability by addressing their stability challenges.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-advancements-have-been-made-in-the-stability-of-perovskite-solar-cells/
