Event Details
Humidity-Tolerant Fabrication of Scalable Perovskite Solar Cells and Modules
Presenter: Mohammad Reza Kokaba
Supervisor:
Date: Wed, October 7, 2026
Time: 16:00:00 - 00:00:00
Place: Elliott 230
ABSTRACT
Abstract:
Ambient-air fabrication of perovskite solar cells remains challenging because fluctuations in humidity can disrupt perovskite crystallization and introduce defects. This seminar presents a humidity-tolerant FAPbI₃ ink strategy based on mixed methylammonium chloride (MACl) and propylammonium chloride (PACl), together with controlled water addition. Using a compositionally graded film approach, the interplay between additive composition and humidity is systematically investigated, leading to an optimized ink containing 5 mol.% MACl, 25 mol.% PACl, and 5 vol.% water. The PACl additive moderates water–precursor interactions and suppresses moisture-induced degradation, enabling uniform, phase-pure α-FAPbI₃ films across a broad range of humidity conditions. Perovskite solar cells fabricated from the optimized ink achieve a power conversion efficiency of 22.7%, while fully scalable minimodules with an active area of 10.23 cm² reach 17.5% efficiency. This work establishes mixed alkylammonium chloride chemistry as a strategy for reliable and scalable perovskite photovoltaic manufacturing under variable ambient conditions.