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 journalArticlepeer-review

44 Citations (Scopus)

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
Article number6140534
Pages (from-to)129-133
Number of pages5
JournalIEEE Journal of Photovoltaics
Volume2
Issue number2
DOIs
Publication statusPublished - 2012

Bibliographical note

Funding Information:
Manuscript received November 5, 2001; revised December 3, 2011; accepted December 13, 2011. Date of publication January 27, 2012; date of current version March 16, 2012. This work was supported in part by the Department of Energy Division of Materials Science under Award DEFG02-07ER46471, by the Frederick Seitz Materials Research Laboratory at the University of Illinois at Urbana-Champaign, and by the National Science Foundation under Award 0749028 (CMMI).

All Science Journal Classification (ASJC) codes

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

Fingerprint

Dive into the research topics of 'Experimental study of design parameters in silicon micropillar array solar cells produced by soft lithography and metal-assisted chemical etching'. Together they form a unique fingerprint.

Cite this