Core-shell ZnO@CuInS2 hexagonal nanopyramids with improved photo-conversion efficiency

Kajari Das; Sirshendu Ghosh; Kaushik Chakrabarti; Sumana Paul; Godhuli Sinha; J. Lahtinen; D. Jana; S. K. De

doi:10.1016/j.solmat.2015.07.010

Core-shell ZnO@CuInS₂ hexagonal nanopyramids with improved photo-conversion efficiency

Kajari Das, Sirshendu Ghosh, Kaushik Chakrabarti, Sumana Paul, Godhuli Sinha, J. Lahtinen, D. Jana, S. K. De

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

A soft chemical route has been employed to synthesize ZnO@CuInS₂ (ZnO@CIS) core-shell hexagonal nanopyramids using 2-mercaptopropionic acid as a surface-functionalized agent. The core-shell formation was confirmed by the X-ray diffraction, high resolution transmission electron microscope and X-ray photoelectron spectroscopy characterizations. UV-visible absorption spectrum of the core-shell nanopyramids shows a red shift of the band edge of pure ZnO in the visible region along with broadening of the absorption spectrum. ZnO@CIS nanopyramids can be used as an antireflection coating on Silicon solar cell, exhibit lower reflectance and better light trapping ability than the Silicon solar cell with ZnO nanopyramids. Moreover higher photocurrent is obtained for the n-ZnO/n-CIS core-shell junction due to favorable band bending. The efficiency of the p-Si/n-ZnO solar cell (6.6%) is improved to 10% for p-Si/n-ZnO@n-CIS configuration.

Original language	English
Pages (from-to)	326-334
Number of pages	9
Journal	Solar Energy Materials and Solar Cells
Volume	143
DOIs	https://doi.org/10.1016/j.solmat.2015.07.010
State	Published - 31 Jul 2015
Externally published	Yes

Keywords

Antireflection coating
Core-shell
Growth mechanism
Nanopyramids
Soft Chemical route
Solar cell

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.solmat.2015.07.010

Cite this

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title = "Core-shell ZnO@CuInS2 hexagonal nanopyramids with improved photo-conversion efficiency",

abstract = "A soft chemical route has been employed to synthesize ZnO@CuInS2 (ZnO@CIS) core-shell hexagonal nanopyramids using 2-mercaptopropionic acid as a surface-functionalized agent. The core-shell formation was confirmed by the X-ray diffraction, high resolution transmission electron microscope and X-ray photoelectron spectroscopy characterizations. UV-visible absorption spectrum of the core-shell nanopyramids shows a red shift of the band edge of pure ZnO in the visible region along with broadening of the absorption spectrum. ZnO@CIS nanopyramids can be used as an antireflection coating on Silicon solar cell, exhibit lower reflectance and better light trapping ability than the Silicon solar cell with ZnO nanopyramids. Moreover higher photocurrent is obtained for the n-ZnO/n-CIS core-shell junction due to favorable band bending. The efficiency of the p-Si/n-ZnO solar cell (6.6%) is improved to 10% for p-Si/n-ZnO@n-CIS configuration.",

keywords = "Antireflection coating, Core-shell, Growth mechanism, Nanopyramids, Soft Chemical route, Solar cell",

author = "Kajari Das and Sirshendu Ghosh and Kaushik Chakrabarti and Sumana Paul and Godhuli Sinha and J. Lahtinen and D. Jana and De, {S. K.}",

year = "2015",

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doi = "10.1016/j.solmat.2015.07.010",

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AU - Das, Kajari

AU - Ghosh, Sirshendu

AU - Chakrabarti, Kaushik

AU - Paul, Sumana

AU - Sinha, Godhuli

AU - Lahtinen, J.

AU - Jana, D.

AU - De, S. K.

PY - 2015/7/31

Y1 - 2015/7/31

N2 - A soft chemical route has been employed to synthesize ZnO@CuInS2 (ZnO@CIS) core-shell hexagonal nanopyramids using 2-mercaptopropionic acid as a surface-functionalized agent. The core-shell formation was confirmed by the X-ray diffraction, high resolution transmission electron microscope and X-ray photoelectron spectroscopy characterizations. UV-visible absorption spectrum of the core-shell nanopyramids shows a red shift of the band edge of pure ZnO in the visible region along with broadening of the absorption spectrum. ZnO@CIS nanopyramids can be used as an antireflection coating on Silicon solar cell, exhibit lower reflectance and better light trapping ability than the Silicon solar cell with ZnO nanopyramids. Moreover higher photocurrent is obtained for the n-ZnO/n-CIS core-shell junction due to favorable band bending. The efficiency of the p-Si/n-ZnO solar cell (6.6%) is improved to 10% for p-Si/n-ZnO@n-CIS configuration.

AB - A soft chemical route has been employed to synthesize ZnO@CuInS2 (ZnO@CIS) core-shell hexagonal nanopyramids using 2-mercaptopropionic acid as a surface-functionalized agent. The core-shell formation was confirmed by the X-ray diffraction, high resolution transmission electron microscope and X-ray photoelectron spectroscopy characterizations. UV-visible absorption spectrum of the core-shell nanopyramids shows a red shift of the band edge of pure ZnO in the visible region along with broadening of the absorption spectrum. ZnO@CIS nanopyramids can be used as an antireflection coating on Silicon solar cell, exhibit lower reflectance and better light trapping ability than the Silicon solar cell with ZnO nanopyramids. Moreover higher photocurrent is obtained for the n-ZnO/n-CIS core-shell junction due to favorable band bending. The efficiency of the p-Si/n-ZnO solar cell (6.6%) is improved to 10% for p-Si/n-ZnO@n-CIS configuration.

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KW - Solar cell

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