Solvent‑free perovskite solar cell technology could pave way for scalable production

February 24, 2026 - 22:10

A significant advancement in solar technology has been achieved with the development of a new, solvent-free manufacturing process for perovskite solar cells. This innovation promises to overcome key hurdles in producing these highly efficient cells on a commercial scale.

The breakthrough centers on a refined multi-source co-evaporation technique conducted under a vacuum. This method precisely deposits the raw perovskite materials as a vapor onto a surface, bypassing the need for liquid chemical solvents entirely. The result is a dramatic improvement in the crystalline quality and uniformity of the light-absorbing perovskite layer.

Eliminating solvents addresses two major bottlenecks. First, it removes the environmental and health concerns associated with handling large volumes of potentially toxic solvents in a factory setting. Second, and crucially, it solves the inconsistency problem. Traditional solution-based methods struggle to produce perfectly uniform films over large areas, as the liquid drying process is difficult to control. This vacuum-based approach ensures exceptional layer homogeneity.

This leap in fabrication quality directly translates to device performance and longevity. Solar cells produced with this technique demonstrate both high efficiency and notably improved operational stability. By providing a clean, controllable, and repeatable process, this research paves a clear path toward the scalable roll-to-roll production necessary for perovskite photovoltaics to move from the lab and make a substantial impact on global renewable energy generation.