The present paper discusses thoretical study about the surface plasmon resonance (SPR) properties of poly‐3 hexylthiophene‐2,5‐diyl, 6,6‐phenylC61 butyric acid methyl ester: Cu nano film with the variation of thickness of Cu nano film. The present theoretical studies show that the variation of thickness of the Cu nano film gives better result as compared to gold and silver nano films. The SPR Q‐factor infers that copper would be a good candidate to replace gold as potential plasmonic materials.
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