NDLI: Magnesium doped ZnO nanoparticles embedded ZnO nanorod hybrid electrodes for dye sensitized solar cells

Content Provider	Springer Nature Link
Author	Justin Raj, C. Karthick, S. N. Hemalatha, K. V. Son, Min Kyu Kim, Hee Je Prabakar, K.
Copyright Year	2012
Abstract	We report a novel type of Mg doped ZnO nanoparticles (ZMP) embedded on hydrothermally grown ZnO nanorod (ZR) based photoanode dye sensitized solar cells. The crystallinity, composition and morphology of the photoanodes were characterized by using X-ray diffraction analysis, X-ray photoelectron spectroscopy and scanning electron microscopy. The amount of dye absorbed in the photoanode was observed using UV visible spectral analysis. The improved internal resistance and charge-transfer kinetics of the fabricated cells were analyzed using electrochemical impedance spectroscopy. The ZMP embedded electrode of low thickness (~2.5 μm) gained an enhanced short-circuit current density of 8.56 mA/cm$^{2}$, open-circuit photo voltage of 0.71 V, fill factor of 0.51, and overall conversion efficiency of 2.91 % under 1 sun illumination. This shows high conversion efficiency and performance than that of ZnO nanorod (η ~ 0.22 %) and bare ZnO nanoparticles (ZP) embedded ZnO nanorod (η ~ 1.04 %) based cells. The presence of Mg ions in the ZnO nanoparticle hinders the interfacial recombination of the photo-excited electrons with the electrolyte and also shows better dye absorption than that of ZR. These factors can significantly enhance solar-cell performance and increase the efficiency of the ZMP based dye sensitized solar cells.
Starting Page	453
Ending Page	459
Page Count	7
File Format	PDF
ISSN	09280707
Journal	Journal of Sol-Gel Science and Technology
Volume Number	62
Issue Number	3
e-ISSN	15734846
Language	English
Publisher	Springer US
Publisher Date	2012-03-21
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanostructured materials Dye sensitized solar cells Zinc oxide Photoanode Nanorods Thin films Optical and Electronic Materials Inorganic Chemistry Ceramics, Glass, Composites, Natural Methods Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Materials Chemistry Biomaterials Condensed Matter Physics Electronic, Optical and Magnetic Materials

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