Volume 7 Issue 2 - July 2016

  • 1. Synthesis of cds/zns quantum dots for solarcell applications

    Authors : Lekshmi Gangadhar

    Pages : 591-600

    DOI : http://dx.doi.org/10.21172/1.72.590

    Keywords : cadmium sulfide, zinc sulfide, quantum dots, synthesis, core/shell, solar cells

    Abstract :

    Quantum dots are considered as potential candidates for solar cell applications due to quantum confinement effects. An alternative concept to present day photovoltaic devices is the quantum dots-sensitized solar cells (QDSSC). Cadmium sulfide/Zinc sulfide-sensitized solar cells have been synthesized by Chemical bath deposition based on an aqueous medium involving cadmium sulphate, zinc acetate, thiourea and ammonium hydroxide. To improve the luminescence efficiency and photostability of the quantum dots, overcoating quantum dots with another wide band gap semiconductor is a usual procedure. In particular, for CdS quantum dots, the particles were covered with ZnS to establish a core/shell system. This CdS/ZnS quantum dots are assembled onto nanoporous TiO2 films for quantum dots-sensitized solar cell applications. The structural and surface morphological properties of nanoparticles were studied using field emission scanning electron microscope (FE-SEM), Transmission electron microscopy (TEM), ultraviolet-visible light (UV-VIS) spectrometer, Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The photovoltaic studies of the cell were carried out and an I-V characteristic of the cell was compared with bare TiO2.An efficiency as high as 1.80% for the CdS/ZnS quantum dots-sensitized solar cells was achieved using the present method.

    Citing this Journal Article :

    Lekshmi Gangadhar, "Synthesis of cds/zns quantum dots for solarcell applications", https://www.ijltet.org/journal_details.php?id=906&j_id=3298, Volume 7 Issue 2 - July 2016, 591-600, #ijltetorg