Optimization of the carbon ink printing process   for the fabrication of flexible printed perovskite optoelectronic devices

Yerassyl Yerlanuly; Askhat Jumabekov

doi:10.26577/phst20261317

Authors

Yerassyl Yerlanuly National Laboratory Astana, Astana, Kazakhstan; Department of Physics, School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan https://orcid.org/0000-0001-6757-1041 (unauthenticated)
Askhat Jumabekov National Laboratory Astana, Astana, Kazakhstan; Department of Physics, School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan https://orcid.org/0000-0003-0051-9542 (unauthenticated)

DOI:

https://doi.org/10.26577/phst20261317

Abstract

Carbon-based electrodes represent a promising alternative to noble metals for fully printed flexible perovskite solar cells (FPSCs) due to their low cost, chemical stability, and compatibility with scalable manufacturing. In this work, the printing and optimization of carbon ink electrodes using slot-die coating and screen-printing techniques are systematically investigated for application in fully printed FPSCs. The influence of printing parameters on the electrical and structural properties of carbon films is evaluated through sheet resistance measurements and Raman spectroscopy. Slot-die-coated carbon electrodes deposited at an optimized pump rate of 1 mL min⁻¹ exhibit uniform films with a sheet resistance of approximately 80 Ω sq⁻¹, while screen printed electrodes fabricated using a multi point paste application strategy show improved uniformity with an average sheet resistance of ~125 Ω sq⁻¹. Using the optimized electrodes, fully printed FPSCs with a regular (n–i–p) architecture are fabricated on PET substrates. Devices incorporating slot-die coated carbon electrodes achieve a power conversion efficiency (PCE) of ~0.6% over a large active area, whereas screen printed carbon electrodes enable improved performance with a maximum PCE of 3.86%. These results demonstrate the feasibility of low-temperature, vacuum-free fabrication of flexible perovskite solar cells and provide practical guidelines for scalable roll-to-roll manufacturing.

Key words: Printed perovskite solar cells; carbon electrodes; slot-die coating; screen printing; flexible electronics

Author Biography

Yerassyl Yerlanuly, National Laboratory Astana, Astana, Kazakhstan; Department of Physics, School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan

Yerlanuly Yerassyl graduated with honours from the bachelor and master course programs of the Faculty of Physics and Technology of al-Farabi KazNU in the specialities "5B071800-Energetics" and "6M074000-Nanomaterials and Nanotechnology", respectively. His research activities cover nanotechnology, carbon nanomaterials, plasma physics, plasma technology. Yerlanuly is a multiple winner of national and foreign competitions for young scientists; Laureate of the State Youth Prize “Daryn” of the Government of the Republic of Kazakhstan in the field of science - 2019.
Yerlanuly Ye. is the author of 6 patents of the Republic of Kazakhstan, 20 publications in journals with impact factor, in the database of Web of Science and Scopus, and more than 30 publications in journals from the list of Education and Science Monitoring Committee of the Ministry of Education and Science of the Republic of Kazakhstan (EScMC of MESc RK). He has made scientific reports at international conferences several times. H-index 5.