Experimental study of design parameters in silicon micropillar array solar cells produced by soft lithography and metal-assisted chemical etching

Jae Cheol Shin, Debashis Chanda, Winston Chern, Ki Jun Yu, John A. Rogers, Xiuling Li

Research output: Contribution to journalArticle

Abstract

Solar cells, consisting of core-shell p-n junction silicon micropillars on a thin membrane fabricated using soft lithography and metal-assisted chemical etching, are studied as a function of geometrical designs. Significant enhancement in absorption rate is found without much dependence on the pillar diameters in the range of 0.5-2 μm. However, the short-circuit current increases continuously with diameter, which is inversely proportional to the total surface area for a fixed diameter/pitch pillar array. This study provides unambiguous evidence that surface recombination is the dominant loss mechanism in nanowire- or micropillar-based solar cells.

Original languageEnglish (US)
Article number6140534
Pages (from-to)129-133
Number of pages5
JournalIEEE Journal of Photovoltaics
Volume2
Issue number2
DOIs
StatePublished - Jan 27 2012

Fingerprint

Solar cell arrays
Silicon
Lithography
Etching
Solar cells
lithography
solar cells
Metals
etching
silicon
Short circuit currents
metals
Nanowires
short circuit currents
Membranes
p-n junctions
nanowires
membranes
augmentation

Keywords

  • Etching
  • nanopatterning
  • photovoltaic cells
  • semiconductor nanostructures

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Experimental study of design parameters in silicon micropillar array solar cells produced by soft lithography and metal-assisted chemical etching. / Shin, Jae Cheol; Chanda, Debashis; Chern, Winston; Yu, Ki Jun; Rogers, John A.; Li, Xiuling.

In: IEEE Journal of Photovoltaics, Vol. 2, No. 2, 6140534, 27.01.2012, p. 129-133.

Research output: Contribution to journalArticle

Shin, Jae Cheol ; Chanda, Debashis ; Chern, Winston ; Yu, Ki Jun ; Rogers, John A. ; Li, Xiuling. / Experimental study of design parameters in silicon micropillar array solar cells produced by soft lithography and metal-assisted chemical etching. In: IEEE Journal of Photovoltaics. 2012 ; Vol. 2, No. 2. pp. 129-133.
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