• HAMZA SAIDI

      Articles written in Bulletin of Materials Science

    • Effect of annealing treatment and ICL in the improvement of OSC properties based on MEH-PPV:PC70BM and P3HT:PC70BM sub-cells

      HAMZA BOUZID HAMZA SAIDI NADIA CHEHATA ABDELAZIZ BOUAZIZI

      More Details Abstract Fulltext PDF

      Tandem organic solar cells (OSCs), consisting of more than one (usually two) sub-cells, stacked and connected by a charge recombination layer (i.e., interconnecting layer (ICL)), are highly promising to boost OSC efficiency. The ICL plays a critical role in regulating the performance of tandem device. Here, we report ZnO or C$_{60}$ as a simple ICL, modified then, by a PEDOT:PSS layer, can act as an efficient ICLs in tandem device to achieve a significant increase in performance compared to single sub-cell. After optimized optical properties of MEH-PPV:PC$_{70}$BM and P3HT:PC$_{70}$BM sub-cells by varying the annealing temperature, these ICLs are used to connect photoactive layers. For all tandem devices, we showed an improvement in optical properties, especially in the ground and excited states compared to optimized single sub-cells. The degree of improved performance in tandem devices is attributed to the connection which provides each ICL. For fully optimized tandem, based on C$_{60}$ ICL, reached ${\sim}$78% enhancement in charge transfer compared to the bottom sub-cell and 82% compared to the top sub-cell, obtained for ${\lambda}_{emission}$ = 650 nm.

  • 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

© 2021-2022 Indian Academy of Sciences, Bengaluru.