Researchers from Pakistan's University of Engineering & Technology (UET) and National University of Technology have reported the use of manual screen printing to fabricate semi-transparent, scalable perovskite solar modules without the requirement for numerous laser-scribing steps.
A carbon-based, hole-transport-layer-free perovskite solar module with a power conversion efficiency of 11.83% was manufactured, with an active area of 900 cm2. Accelerated testing was done in settings with elevated humidity, high sun irradiation, and harsh temperatures to determine whether these modules are ready for the market.
The modules showed mean deterioration rates of 0.04% and 0.02% when tested at average spring and summer temperatures of 35°C and 44°C, respectively. The degradation rate in a dry heat test at 70°C was found to be 0.11%. Under 70 % relative humidity, full solar light, and water immersion, degradation rates of 0.05%, 0.11%, and 0.16% were noted, respectively. Thanks to their high efficiency and stability, the team expects that these semi-transparent perovskite solar modules can be used in building-integrated photovoltaic applications.
