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      https://www.ias.ac.in/article/fulltext/boms/036/07/1161-1164

    • Keywords

       

      CdSe; nanotetrapods; conjugated polymer; hybrid solar cells.

    • Abstract

       

      Tetrapod-shaped CdSe nanocrystals were obtained using a simple method. HRTEM shows that the average size of the tetrapod core are about 4 nm, widths of the tetrapod arms are about 4 nm and lengths of the arms are about 20 nm. XRD patterns reveal that the OA-capped CdSe tetrapod nanocrystals have a hexagonal wurtzite structure. A hybrid solar cell fabricated based on an 8:1 (w/w) blend of CdSe tetrapod nanocrystals and MEH–PPV showed a maximum power conversion efficiency of 0.46% under an air mass 1.5 global condition. The effects of nanocrystal composition on the photovoltaic properties of hybrid solar cells based on nanotetrapods CdSe/MEH–PPV were investigated. The power conversion efficiency values initially increased and then decreased, but the 𝑉OC values linearly decreased from 1.1 to 0.25 V with increased CdSe nanotetrapod in the blend film. The significant quenching of PL with increased nanotetrapod concentration indicated photo-induced charge transfer between MEH–PPV and CdSe.

    • Author Affiliations

       

      Qi Pang1 Li Juan Zhao2 Jun He3 Chun Jie Liang3 Ai Miao Qin3 Jian Nong Wang4

      1. College of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
      2. Applied Physics Department, Donghua University, Shanghai 201620, China
      3. College of Chemistry and Material, Yulin Normal University, Yulin, Guangxi 537000, China
      4. Physics Department, Hong Kong Uniersity of Science and Technology, Clear Water Bay, Hong Kong, China
    • Dates

       
  • Bulletin of Materials Science | News

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