Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
The development of nuclear fusion reactors requires detailed nuclear analyses to ensure they run safely and effectively. These are currently typically done using partial models. Juarez et al. now present a complete 360° model of the ITER tokamak, which allows for more realistic and complete modelling of the system.
Two-dimensional structures introduced into perovskite solar cells improve performance yet their morphological and dimensional control remains challenging. Jang et al. devise a solid-phase approach to grow phase-pure two-dimensional perovskites over bulk perovskite, which affords greater device efficiency and stability.
The investigation of perovskite solar modules under outdoor conditions could provide insights into device operation and degradation in the field. Velilla et al. report on the potential of the ideality factor to analyse outdoor device performance evolution over time, distinguish between degradation modes and estimate the lifetime.
