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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/043/0174

    • Keywords

       

      Exciton diffusion; encapsulated polymer nanoparticles; electron and hole acceptor.

    • Abstract

       

      Exciton generation, migration and dissociation are key fundamental processes that dictate the efficiency of optoelectronic devices. Here, we investigate exciton diffusion process of conjugated polymer nanoparticles (PNPs) in the presence of electron and hole scavenger molecules using time-resolved spectroscopy. We found that the exciton diffusion length of hole transporting PNPs, decreases in the presence of hole scavenger molecule and it increases in the presence of electron scavenger molecule. Analysis reveals that the diffusivity of excitons can be controlled by changing the nature of scavenger molecules. Such fundamental study is important for developing devices where lower and higher exciton diffusivities are required depending on the requirement of application mode.

    • Author Affiliations

       

      ARNAB GHOSH1 BIKASH JANA1 AJEET KUMAR2 SRIJON GHOSH1 AMITAVA PATRA1

      1. School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
      2. Indian Institute of Science Education and Research, Mohali 140306, India

    • Dates

       
      Published
      29 July 2020
      Manuscript received
      14 August 2019
      Accepted
      1 January 2019
      Final version published online
      29 July 2020

    • Supplementary Material

       

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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