Researchers set out to reduce losses in large area perovskite solar panels by optimizing laser design

Researchers at the University of Rome Tor Vergata's Centre for Hybrid and Organic Solar Energy (CHOSE), collaboration with Greatcell Solar Italy, Technische Universität Dresden and Istituto di Struttura della Materia (ISM-CNR), have designed a way to reduce cell-to-module losses in perovskite solar modules, by optimizing the laser design, establishing a relationship between geometrical fill factor, cell area width, and P1'P2'P3 laser parameters.

In their new work, the research team presented a complete assessment of the optimization of the laser and design of perovskite solar modules. They also transferred these optimizations to a minipanel size, proving the durability of the process.

Upscaling the process from 2.5 × 2.5 to 10 × 10 cm² an efficiency of 18.71% and 17.79% was achieved on an active area of 2.25 and 48 cm² respectively, with only 5% relative losses when scaling from to mini-module to module size. A minipanel was fabricated on 20 × 20 cm², showing 11.9% stabilized efficiency and 2.3 W on an active area of 192 cm², among the highest reported in literature so far at this size.