![]() ![]() Light-induced lattice expansion leads to high-efficiency perovskite solar cells. Spontaneous enhancement of the stable power conversion efficiency in perovskite solar cells. Origin of Sn (ii) oxidation in tin halide perovskites. Blade-coated perovskites on textured silicon for 26%-efficient monolithic perovskite/silicon tandem solar cells. Crystallization in one-step solution deposition of perovskite films: upward or downward? Sci. Liquid medium annealing for fabricating durable perovskite solar cells with improved reproducibility. Slot-die coating large-area formamidinium–cesium perovskite film for efficient and stable parallel solar module. Perovskite ink with wide processing window for scalable high-efficiency solar cells. In situ dynamic observations of perovskite crystallisation and microstructure evolution intermediated from 4− cage nanoparticles. Efficient perovskite solar cells prepared by hot air blowing to ultrasonic spraying in ambient air. Hot-air-assisted fully air-processed barium incorporated CsPbI 2Br perovskite thin films for highly efficient and stable all-inorganic perovskite solar cells. Scalable fabrication and coating methods for perovskite solar cells and solar modules. Highly reproducible and efficient FASnI 3 perovskite solar cells fabricated with volatilizable reducing solvent. Enhanced performance of tin-based perovskite solar cells induced by an ammonium hypophosphite additive. Antioxidant grain passivation for air‐stable tin‐based perovskite solar cells. Enhanced photovoltaic performance of FASnI 3-based perovskite solar cells with hydrazinium chloride coadditive. Highly efficient tin perovskite solar cells achieved in a wide oxygen concentration range. Sn (IV)-free tin perovskite films realized by in situ Sn (0) nanoparticle treatment of the precursor solution. Monolithic all-perovskite tandem solar cells with 24.8% efficiency exploiting comproportionation to suppress Sn (ii) oxidation in precursor ink. Surfactant-controlled ink drying enables high-speed deposition of perovskite films for efficient photovoltaic modules. All-perovskite tandem solar cells with 24.2% certified efficiency and area over 1 cm 2 using surface-anchoring zwitterionic antioxidant. ![]() Enhancing electron diffusion length in narrow-bandgap perovskites for efficient monolithic perovskite tandem solar cells. Stabilizing perovskite–substrate interfaces for high-performance perovskite modules. Tailoring solvent coordination for high-speed, room-temperature blading of perovskite photovoltaic films. Reduced self-doping of perovskites induced by short annealing for efficient solar modules. Iodine reduction for reproducible and high-performance perovskite solar cells and modules. Defect compensation in formamidinium–caesium perovskites for highly efficient solar mini-modules with improved photostability. Solar cell efficiency tables (version 58). All-perovskite tandem solar cells with improved grain surface passivation. CH 3NH 3PbBr 3–CH 3NH 3PbI 3 perovskite–perovskite tandem solar cells with exceeding 2.2 V open circuit voltage. Pathways to high efficiency perovskite monolithic solar modules. ![]() Opportunities and challenges for tandem solar cells using metal halide perovskite semiconductors. The very small cell-to-module derate of 6.5% demonstrates the advantage of a tandem monolithic structure for solar modules. Monolithic all-perovskite tandem solar modules showed a champion efficiency of 21.6% with a 14.3 cm 2 aperture area, corresponding to an active area efficiency of 23.0%. This combination suppresses tin and iodide oxidation and forms a thin SnO 2 layer on the NBG film surface. Adding a reduction agent into NBG films followed by a short period of air exposure and a post-fabrication storage surprisingly increases carrier recombination lifetime and enables laser scribing in ambient conditions without obvious loss of device performance. Here a hot gas-assisted blading method is developed to accelerate the perovskite solidification, forming compact and thick narrow bandgap (NBG) perovskite films. All-perovskite tandem solar modules are promising to reduce the cost of photovoltaic systems with their high efficiency and solution fabrication, but their sensitivity to air still imposes a great challenge. ![]()
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