Learning know-how on fabrication and encapsulation of 10 cm x 10 cm perovskite modules
There is a huge gap between making small cells and modules. Conveniently, multiple stand alone perovskite cells (~0.1 cm square) can be made by spin coating techniques. Meanwhile, the policy makers and community at large want to see data obtained from modules at real outdoor conditions, leaving small cells tested under simulated and controlled ambient less relevant to paving way for perovskite PV to enter market. Our project aims to provide evidence of outdoor testing of solution-processed emerging PV suitable and potential for cloudy climate such as that of the UK. We clearly see VIPERLAB as an accelerator for us to establish the know-how and minimize resource waste in shifting from small cell to a minimodule 10 cm x 10 cm. By the end of our project (2024), we will also develop larger 30 cm x 30 cm modules. Instead of conducting a specific experiment, it would be a great gain for us to learn know-how and establish our baseline alike to other more experienced research groups.
Status: Ongoing
Date of proposal: 31/08/2023
Start date: 30/01/2023
End Date: 03/02/2023
Used Instruments: UNITOV_CHOSE-S2S
Experimental Technique: Blade coating method for active layers (ETL, perovskite, Spiro-OMeTAD). Laser patterning (P1 etching) and substrate cleaning. Gold contact deposition and current-voltage (IV) measurement.
Experiment Description: The experiment, conducted at the University of Rome 'Tor Vergata,' focused on learning the fabrication of perovskite solar modules measuring 10 cm x 10 cm. The primary learning objectives included laser patterning, active layer deposition, and encapsulation aspects of module fabrication.
Type Samples: Perovskite solar modules.
Sample Description: Initially planned for slot-die coating, but shifted to blade coating for smaller samples (5 cm x 7 cm) to save precursor and reduce waste.
Experiment Data Type: Process and technique details for module fabrication. Efficiency and performance characteristics of fabricated modules.
Characterization Technics: Patterning and alignment. Blade coating for active layer deposition. IV measurement for performance evaluation.
Characterization Data Type: Details on patterning and alignment processes. Characteristics of active layers deposited via blade coating. Performance data from IV measurements.
Analyzed Data: Techniques and methodologies for perovskite solar module fabrication. Adaptation and optimization strategies in module fabrication process.
Main Targets Project: Learning and mastering the fabrication of perovskite solar modules. Gaining know-how on solution-processable solar modules using sheet-to-sheet deposition methods.
Main Achievements Findings: Successful transfer of knowledge on module fabrication, with a focus on blade coating methods. Insightful learning experience covering all aspects of module fabrication from etching to encapsulation. Adaptation of the acquired knowledge for optimizing processes in the UK laboratory. Efficient and helpful knowledge transfer from the CHOSE team, focusing on high efficiency solar modules with minimum geometric fill factor loss.
Review 17
How would you describe your experience with the VIPERLAB opportunity? How did the experience/visit at CHOSE meet your expectations?
It was brilliant. I was able to learn from right person of the group with respect to upscaling sheet to sheet perovskite module fabrication.
Did you face any difficulties during your visit or application process?
I wish I knew the typical duration of visits. When I came there, I realised other Viperlab visitors came for few weeks or even few months. Meanwhile, I set the mindset of spending minimum time when I applied. I wish I had written a proposal for longer visit period to get hands on experience too, not only observing CHOSE colleagues doing their work and taking notes. Moreover, I think the requirement to only let single occupancy for hotel will be a hindrance to me in the future to work at Viperlab facilities outside UK. I have a spouse and young children. Allowing the hotel to be accommodating family-bringing colleagues will be wiser. We donít go to Viperlab facilities to travel/leisure, we go there for work. I wish for longer stays; family is allowed to accompany. Since there is a daily budget for hotel/accommodation, I think there is a room for that flexibility.
Does this VIPERLAB experience at CHOSE bring you closer to your research objectives? How?
Yes, it does. I know parameters toconsider laser scribing and thus minimise geometric fill factor losses. I have ideas of slot die coating apparatus to be adjusted in my lab in the UK
What other VIPERLAB activities have you participated in, or would you like to participate in?
I read slides of LCA of perovskite PV workshops the one that I could not attend. I would love to participate in space PV and tandem workshops, but the publicity seemed to be rather close to the D-day making it difficult for me to arrange for Schengen visa.
Do you intend or already did publish/present your collected results in a paper or conference?
Now, we have no publishable finding yet as we are still optimising our upscaling set up. We surely will mention VIPERLAB support in any future publication within my project.