Role of proton conducting polyelectrolyte on the organic photovoltaics efficiency

Azhakanantham, D and Raghu, G and Selvamani, M and Ramamurthy, PC and Seikh, AH and Kesavan, AV (2024) Role of proton conducting polyelectrolyte on the organic photovoltaics efficiency. In: Journal of Materials Science: Materials in Electronics, 35 (11).

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Abstract

Most of the efficient organic solar cells (OSC) often utilize reactive low-work-function metals like calcium and LiF as a buffer layer. Over a period of time, these types of buffer layer degrade, reacts and diffuses into electrode, photoactive layer. These type of changes results in reduction in efficiency and less lifetime of the OSC. This work demonstrated fabrication of OSC with ionic conducting non-conjugated polyelectrolytes polyethyleneimine (PEI) and perfluorinated ionomer (PFI) instead of conventional transport layer. PEI and PFI were used as a cathode and anode buffer, respectively, in the following device configuration ITO/PEI/P3HT:PC61BM/PFI/Ag. For various PFI thickness, OSC efficiency was optimized. The highest efficiency of 1.82 was obtained for 1:15 PFI ratio device, which was significant improvement than the reference device without PFI. The obtained results were analyzed and critical changes were discussed in this work. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

Item Type:	Journal Article
Publication:	Journal of Materials Science: Materials in Electronics
Publisher:	Springer
Additional Information:	The copyright for this article belongs to Springer.
Keywords:	Buffer layers; Efficiency; Electrodes; Lithium compounds; Polyelectrolytes; Silver compounds, reductions; Conjugated polyelectrolytes; Conventional transports; Organic photovoltaics; Perfluorinated ionomer; Photo-voltaic efficiency; Photoactive layers; Poly(ethyleneimine); Proton conducting polyelectrolytes; Transport layers, Organic solar cells
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	22 May 2024 09:00
Last Modified:	22 May 2024 09:00
URI:	https://eprints.iisc.ac.in/id/eprint/84798

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