Perovskite solar cells are part of the third generation of solar cells, a technology that holds the potential to reduce the use of fossil fuels in energy production. Some factors, such as stability and toxicity, jeopardize the scaling process towards commercialization and access to worldwide markets. This work comprises a review over the last decade on PSC advances and progress in the most highly cited databases. A marked trend was found in replacing Pb for Sn from the absorbing perovskite materials, as well as finding the transport layers that will help in the stability and the efficiency of the solar cell. WO₃ is presented as a viable element for the formation of the electron transport layer. Spiro-OMeTAD is the most used compound for the hole transport layer, but other viable substitutes were also found. Lastly, the Cs₂SnI₆ double perovskite was identified as one of the most stable perovskites that emerged in these 10 years. The efficiency and stability of Sn-based solar cells is still very low when compared to their Pb-based counterparts, driving the current research in material science to enhance their performance.

Sugarcane bagasse ash (SCBA) has been widely studied as a partial supplementary cementitious material; nonetheless, its hydration behavior and performance when combined with nanoscale modifiers remain insufficiently understood. The aim of this study is to assess the pozzolanic potential of SCBA, the hydration behavior of binary SCBA–cement composites and the mechanical performance of ternary mortars with silica nanoparticles (Si-NPs). SCBA reactivity was confirmed by a Chapelle index of ~300 mg Ca(OH)₂/g, while hydration development in binary pastes (5–20 wt% SCBA) was quantified using TG/dTG and semi-quantitative XRD. Low SCBA replacement levels (5–10 wt%) enhanced the hydration degree by up to ~12% at 28 days compared with the reference paste. Ternary mortars incorporating 5 wt% SCBA and Si-NPs exhibited significant strength gains, with the optimal blend (2.5 wt% Si-NPs) achieving a 42% increase in 28-day compressive strength relative to the reference mortar. A sustainability assessment showed concurrent reductions in clinker intensity and CO₂ intensity of approximately 33% and 32%, respectively. These findings support the sustainable and technical viability of combining agro-industrial waste and nanotechnology as complementary strategies for reducing clinker content while enhancing eco-efficiency in alternative cementitious composites.