[REVISION HISTORY]

Perovskite solar cell research and manufacturing

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2026-08-31 04:27 UTC → 2026-09-03 07:12 UTC · added ~~removed~~

Research into perovskite solar technology ~~has focused~~ continues to focus on improving efficiency, stability, and manufacturing processes. Initial developments included a room-temperature, partially green method for producing CsPbBr3-based perovskite particles using a water-octadecene biphasic solvent system, alongside the demonstration of a semi-transparent perovskite photovoltaic cell reaching 21.87% efficiency using a p-i-n architecture. Subsequent advancements have addressed manufacturing complexities. Researchers in Germany developed a vacuum-based process chain to produce perovskite layers without solvents, utilizing sequential evaporation to deposit materials onto silicon substrates. ~~Additionally, efforts~~ Efforts to improve layer uniformity on textured silicon surfaces led to the implementation of a cesium chloride (CsCl) seeding layer to prevent the formation of unwanted lead iodide at the interface. Building on these vacuum-based methods, researchers at the University of Freiburg and the Fraunhofer Institute for Solar Energy Systems have developed a fully solvent-free perovskite-silicon tandem solar cell. This process utilizes physical vapor deposition (PVD) and sequential evaporation to achieve a power conversion efficiency of 27.1%. This approach is designed for industrial scalability by eliminating liquid carriers, reducing contamination risks, and removing the need for drying steps. The technology has also demonstrated high stability, retaining 97.06% of its initial efficiency after 6,800 hours of dark storage under nitrogen. ~~By layering wide-bandgap~~ Recent efforts have also focused on molecular passivation strategies to enhance cell longevity. In Japan, researchers at Sophia University and the National Institute for Materials Science used 2-aminobenzothiazole (2-ABZ) to stabilize tin-based perovskite ~~over narrow-bandgap silicon, these tandem~~ cells ~~aim to capture~~ by inhibiting tin oxidation. Additionally, a ~~broader solar spectrum~~ South Korean collaborative team developed a dual-molecule passivation technology using PDAI and ~~overcome the physical limitations of traditional silicon~~ 4TF molecules to address defects at grain boundaries and surface lead atoms, aiming to improve both efficiency and longevity in inverted perovskite cells.

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