Advancing Scalability of Semitransparent Perovskite Solar Cells for Building-Integrated Photovoltaics with Roll-to-Roll Production
Flexible Perovskite solar cells (PSCs) have emerged as a promising technology for solar energy conversion due to their high efficiency, low-cost, lightweight, and thin characteristics. However, their scalability is a major challenge that needs to be addressed for commercialization. As the preliminary work, using of a non-toxic solvent system and low deposition temperature for the flexible all-blade coated PSCs with 14%. PCE was done. Additionally, flexible semitransparent devices using FAPbBr3 perovskite as part of the European Project CitySolar were manufactured that showed up to 60% average visible transparency and delivered 5% PCE. We propose the development of roll-to-roll (R2R) deposited perovskite solar modules using a cost-effective and robust scalable slot-die coating technique. This work can produce a highly efficient and stable semitransparent solar modules suitable for BIPV applications, opening new opportunities in the PV market.
Status: Ongoing
Date of proposal: 28/02/2023
Start date: 23/07/2001
End Date: 23/09/2028
Used Instruments: Julich R2R infrustructure. Blade coating equipment. R2R (Roll-to-Roll) slot-die coater. Ultrasonic bath. UV-ozone treatment setup. Sun simulator (for solar cell and module measurements). Laser ablation equipment (for film thickness measurement). Confocal microscope. SEM (Scanning Electron Microscope).
Experimental Technique: Blade coating. R2R slot-die coating. Ultrasonic cleaning. UV-ozone treatment. Laser ablation. Photoluminescence measurement. Confocal microscopy. SEM analysis.
Experiment Description: Replication of perovskite solar cell recipe from CHOSE at FZJ using blade coating and R2R techniques. Optimization of blade coating and R2R process for fabricating perovskite solar cells and modules. Investigations into the effects of different concentrations of PbBr2 and FABr inks, CsBr additives, and film thickness on perovskite solar cell performance. Characterization of film properties and solar cell performance using various techniques.
Type Samples: Glass/ITO substrates. PET/IMI substrates (for flexible modules). Perovskite films (FAPbBr3).
Sample Description: Solar cells with a structure of Glass/ITO/SnO2/FAPbBr3/PEDOT/Carbon or PET/IMI/SnO2/FAPbBr3/PEDOT/Carbon for flexible modules.
Experiment Data Type: Photovoltaic characteristics (PCE, VOC, JSC, FF). Film thickness measurements. Photoluminescence spectra. SEM images. Transmittance spectra. JV curves.
Characterization Technics: Photoluminescence characterization. Confocal microscopy. SEM. UV-Vis spectroscopy. Photovoltaic efficiency testing (sun simulator).
Characterization Data Type: Photoluminescence spectra data. Confocal microscopy data (film thickness). SEM images (morphology). UV-Vis spectra (transmittance). JV curves and photovoltaic efficiency data (PCE, VOC, JSC, FF).
Analyzed Data: Optimization of ink concentration for perovskite layer deposition. Effect of CsBr additive concentration on perovskite crystallization. Comparison of performance between blade-coated and R2R-coated cells. Evaluation of film quality and solar cell efficiency.
Main Targets Project: To scale up the production of perovskite solar cells while maintaining performance using R2R manufacturing. To optimize the perovskite solar cell fabrication process and validate it on flexible substrates. To demonstrate the viability of blade-coated and R2R-coated flexible perovskite solar cells and modules.
Main Achievements Findings: Successful demonstration of R2R coated wide bandgap PSCs. Comparable performance of flexible R2R coated cells to blade-coated samples. Fabrication of flexible and fully printed modules using R2R coating. Identification of optimal CsBr additive concentration for phase-pure FAPbBr3. Achievement of 7.24% PCE in R2R-coated cells and 5.37% in modules.