The spectrochemical behavior of composites based on poly (para-phenylenevinylene), reduced graphene oxide and pyrene

Ilie, Mirela; Baibarac, M.

doi:10.1016/j.optmat.2017.06.002

Cited by 2 publications

(2 citation statements)

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“…Up to now photoconductive studies were reported on multilayer PPV/RGO structures, but in the present study, we use bulk heterojunction based on PPV and RGO which are non‐covalently functionalized . Even though many researchers have studied the photoconductive processes on different types of materials, or even on composite materials based on PPV and carbon nanoparticles no one reported PC recorded on PPV/RGO, as a bulk heterojunction composite prepared through thermal conversion from the PPV precursor solution mixed with different concentration of RGO.…”

Section: Introductionmentioning

confidence: 97%

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Photoconductive Behavior of the PPV/RGO Composites: Insights of Charge Transfer Process

Ilie

Dragoman

Baibarac

2019

Physica Status Solidi (b)

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The paper deals with a study of composites based on poly(p-phenylenevinylene) (PPV) and reduced graphene oxide (RGO) in terms of photoconductivity and photocurrent (PC) dynamics in charge-discharge cyclic processes. The explanation for the photoconductive behavior is built with the support of DeVore and Onsager theories. Scanning samples in both directions involves charge transport, to and from, available energy states called defect centers. The existence of these centers is confirmed by a decrease in the composite bandgap caused by the RGO localized states which are situated slightly above the first HOMO level in the PPV bandgap. The contribution of RGO to the photoconductive properties of PPV is revealed through a photocurrent value with two orders of magnitude higher than for PPV.

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Section: Introductionmentioning

confidence: 97%

“…To the best of our knowledge there are up to now only few articles on PPV/RGO composite and from all these papers just one has reported photoconductive properties of PPV/RGO as a component of a CdS quantum dot‐sensitized solar cell, where PPV‐RGO played the role of the photocathode …”

Section: Introductionmentioning

confidence: 99%