Topic: Stability of Perovskite Optoelectronic Devices

Perovskite optoelectronic devices – including solar cells, light‑emitting diodes, and photodetectors – have achieved remarkable gains in efficiency and luminescence. Yet their commercial translation remains blocked by instability under light, heat, moisture, and electric bias. Key degradation routes involve ion migration, phase segregation, interfacial reactions, and electrode corrosion. Although compositional engineering, passivation, 2D/3D heterostructures, and encapsulation have extended device lifetimes, a full mechanistic picture and cost‑effective, scalable solutions are still lacking.

This Special Issue invites original research and comprehensive reviews that tackle stability challenges from materials chemistry to device engineering. Topics of interest include degradation chemistry, in‑situ/operando characterization, novel stabilising additives, interface design, accelerated ageing protocols, and module‑level reliability. We particularly welcome studies that combine experimental with theoretical approaches, as well as efforts to bridge lab‑scale cells to large‑area modules. Research addressing environmental factors (humidity, oxygen, temperature cycling) and operational stress is also encouraged.

By gathering diverse perspectives – from fundamental degradation science to practical encapsulation and standardised testing – this issue aims to shorten the gap between academic breakthroughs and industrial deployment. We believe that cross‑disciplinary contributions will be key to unlocking the long‑term stability required for real‑world perovskite optoelectronics.

Perovskite stability, solar cells, optoelectronic devices, degradation mechanisms, ion migration, interface engineering, device reliability