Journal Article

Scribing Method for Carbon Perovskite Solar Modules

Charbonneau, Cecile, Worsley, David, Meroni, Simone M. P., Dunlop, Tom, Baker, Jenny A., Watson, Trystan M., Hooper, Katherine E. A.

2020

Overview

The fully printable carbon triple-mesoscopic perovskite solar cell (C-PSC) has already demonstrated good efficiency and long-term stability, opening the possibility of lab-to-fab transition. Modules based on C-PSC architecture have been reported and, at present, are achieved through the accurate registration of each of the patterned layers using screen-printing. Modules based on this approach were reported with geometric fill factor (g-FF) as high as 70%. Another approach to create the interconnects, the so-called scribing method, was reported to achieve more than 90% g-FF for architectures based on evaporated metal contacts, i.e., without a carbon counter electrode. Here, for the first time, we adopt the scribing method to selectively remove materials within a C-PSC. This approach allowed a deep and selective scribe to open an aperture from the transparent electrode through all the layers, including the blocking layer, enabling a direct contact between the electrodes in the interconnects. In this work, a systematic study of the interconnection area between cells is discussed, showing the key role of the FTO/carbon contact. Furthermore, a module on 10 × 10 cm2 substrate with the optimised design showing efficiency over 10% is also demonstrated.

• Publisher: MDPI AG
• Subject: Capital costs / Carbon / Electrodes / Glass substrates / Market penetration / module / perovskite / Registration / screen-printing / solar cells / up-scaling