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

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 Spect...

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Bibliographic Details
Published in:Journal of physics. Conference series 2017-05, Vol.836 (1), p.12054
Main Authors: Sharma, Harit Kumar, Pandey, S K, Agrawal, S L
Format: Article
Language:English
Subjects:
Chemical precipitation
Electrons
Heterojunctions
Photovoltaic cells
Physics
Quantum dots
Solar cells
Spectroscopic analysis
Spectrum analysis
X-ray diffraction
Zincblende
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Summary: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 %.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/836/1/012054