Studies on ternary zinc blend based semiconducting quantum dots for hybrid solar cell applications

Frontiers of Physics and Plasma Science

Sharma, Harit Kumar^1 ; Pandey, S.K.^2 ; Agrawal, S.L.^1

SSI Laboratory Department of Physics, Awadhesh Pratap Singh University, Rewa (M.P.)

486003, India^1

Govt. Engineering College, Rewa (M.P.)

486002, India^2

关键词: Bulk heterojunction;    Hybrid solar cells;    Impedance spectroscopy measurements;    Mott-Schottky analysis;    N-type conductivity;    Semiconducting quantum dots;    UV visible spectroscopy;    Wet-chemical precipitation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/836/1/012054/pdf
DOI  :  10.1088/1742-6596/836/1/012054

来源: IOP

【 摘 要 】

A systematic study is presented in the present work on the fabrication of hybrid solar cell using doped zinc blend based semiconductor quantum dots (QDs) prepared by a simple wet chemical precipitation method. Formation of quantum dot has been ascertained by X-ray Diffraction (XRD), UV-visible Spectroscopy and Impedance Spectroscopy measurements. XRD studies established the zinc-blende phase in quantum dot regime. UV-visible studies reveal decrement in optical bandgap of the QDs with co-doping of Cd ion in ZnS lattice. Mott-Schottky analysis revealed n-type conductivity with increasein band bending from binary to ternary configuration respectively. Bulk heterojunction hybrid solar cells fabricated in 1cm X 1cm size in conjunction with p type Polypyrroleunder AM 1.5 illumination resulted in highest conversion efficiency of 1.6 %.