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Improving Photovoltaic Performance in P3HT:PCBM Organic Solar Cells through Silver Nanoparticle Incorporation in Hole Transport Layer

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Abstract:

Organic solar cells (OSCs) have significant challenges with limited light absorption and low efficiency. This study investigates enhancing OSC performance through plasmonic effects by incorporating silver nanoparticles (AgNPs) into the hole transport layer (PEDOT:PSS). AgNP concentrations systematically varied in PEDOT:PSS (0.2%, 0.4%, 0.6%, and 0.8%) and studied their effects on device performance using UV-vis spectroscopy and current-voltage measurements. The OSC device with 0.8% AgNPs revealed a 39% increase in light absorption within the active poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) across the visible and ultraviolet spectrum, leading to a power conversion efficiency of 5.99% - twice that of the reference device. The enhanced performance is attributed to localised surface plasmon resonance effects, which improve carrier generation. These findings demonstrate a promising approach for enhancing OSC efficiency through plasmonic enhancement.

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Periodical:

Applied Mechanics and Materials (Volume 934)

Pages:

11-20

DOI:

https://doi.org/10.4028/p-8ri5Yo

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Online since:

February 2026

Authors:

Abdullah A. Hussain*, A. H. A. Hassan, K. M. Musa

Keywords:

Buffer Layer, P3HT:PCBM, PEDOT:PSS, Silver Nanoparticle

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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