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Optoelectronic Properties of a Series of P3HT/Dye Pairs

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Journal Article - Open Access

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Norfolk State University Norfolk United States

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A series of polymerdye composite pairs, where the same polymer Poly 3-hexylthiophene-2,5-diyl or P3HT paired with a series of three molecular dyes Meso-Tetra4-carboxyphenyl porphine TCPP, Ferriprotoporphyrin IX chloride Hemin, and Protoporphyrin IX Protoof different frontier orbitals and absorption coefficients are systematically investigated for potential optoelectronic conversion applications. A facile method to distinguish the charge and energy transfer contributions between emissive P3HT and dyes under certain conditions via concentration dependent photoluminescence PL is described. The experimental results from this study also revealed that the optoelectronic energy conversion efficiencies of theP3HTdye based OE devices appear to be affected more critically by the P3HTdye pair PL quenching than the optical absorption coefficients of the dyes, and that there appears to exist an optimal LUMO offset of P3HTdye pair for most severe PL quenching or the best optoelectronic conversion efficiency. These study could be very useful for the design and development of next generation high efficiency soft materials based optoelectronic devices such as solar cells and photodetectors.

Subject Categories:

  • Non-electrical Energy Conversion
  • Electricity and Magnetism

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