Transient photoconductivity and femtosecond nonlinear optical properties of a conjugated polymer–graphene oxide composite

  title={Transient photoconductivity and femtosecond nonlinear optical properties of a conjugated polymer–graphene oxide composite},
  author={Venkatram Nalla and Lakshminarayana Polavarapu and Kiran Kumar Manga and Bee Min Goh and Kian Ping Loh and Qinghua Xu and Wei Ji},
A water soluble conjugated thiophene polymer, sodium salt of poly[2-(3-thienyl)ethoxy-4-butylsulfonate] (TPP), and graphene oxide (GO) composite film (GO–TPP) device was prepared. Transient photoconductivity measurements were carried out on the GO–TPP composite film using 150 ns laser pulses of 527 nm wavelength. Highly efficient photocurrent generation was observed from the GO–TPP film. The relationships of the film photoconductivity, photocurrent decay time and electron decay times with the… 

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