Advancing Continuous Roll-to-Roll Production: Harnessing Carbon in Perovskite Solar Cells
Trystan Watson a, Dave Beynon a, Ershad Parvazian a, Rahul Patidar a
a SPECIFIC, Swansea University, Baglan Bay Innovation and Knowledge Centre, Baglan, SA12 7AX, United Kingdom
Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
#PeroFF - Perovskite: from fundamentals to device fabrication
Barcelona, Spain, 2024 March 4th - 8th
Organizers: Lioz Etgar, Wang Feng and Michael Saliba
Invited Speaker, Trystan Watson, presentation 395
DOI: https://doi.org/10.29363/nanoge.matsus.2024.395
Publication date: 18th December 2023

This talk will explore the use of carbon electrodes in the fabrication of perovskite solar cells via a high-volume continuous slot-die roll-to-roll (R2R) method, discussing both the opportunities and challenges this technology presents.

A key aspect of the presentation will be the development and application of a specialized carbon ink in the R2R process. This ink is crucial for creating an efficient and compatible electrode layer in perovskite solar cells. However, the integration of carbon into the tightly controlled sequence of the R2R process presents significant challenges. Achieving uniform deposition of the carbon layer at the same processing speeds as other layers requires precise control over the rheology and drying behavior of the ink. These factors are critical to maintain the efficiency and consistency of the solar cells.

One of the major hurdles in this process is ensuring that the carbon ink can be deposited seamlessly within the high-speed, continuous R2R process without compromising the quality of the perovskite layer. Achieving this requires an understanding of the material properties and the interaction between the different layers of the solar cell.

The talk will also address the broader vision of this technology. The ultimate goal is to realize the concept of "liquid in, solar cell out," where the entire solar cell, from the transport layers to the perovskite layer to the carbon electrode, is fabricated in a single, continuous process. This approach promises not only a reduction in production costs but also a significant increase in the scalability and accessibility of perovskite technology.

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