Performance of ultrathin silicon solar microcells with nanostructures of relief formed by soft imprint lithography for broad band absorption enhancement

Dan Shir, Jongseung Yoon, Debashis Chanda, Jae Ha Ryu, John A. Rogers

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

Recently developed classes of monocrystalline silicon solar microcells can be assembled into modules with characteristics (i.e., mechanically flexible forms, compact concentrator designs, and high-voltage outputs) that would be impossible to achieve using conventional, wafer-based approaches. This paper presents experimental and computational studies of the optics of light absorption in ultrathin microcells that include nanoscale features of relief on their surfaces, formed by soft imprint lithography. Measurements on working devices with designs optimized for broad band trapping of incident light indicate good efficiencies in energy production even at thicknesses of just a few micrometers. These outcomes are relevant not only to the microcell technology described here but also to other photovoltaic systems that benefit from thin construction and efficient materials utilization.

Original languageEnglish (US)
Pages (from-to)3041-3046
Number of pages6
JournalNano letters
Volume10
Issue number8
DOIs
StatePublished - Aug 11 2010

Keywords

  • Nanoimprint lithography
  • light trapping
  • optical nanostructures
  • photovoltaics
  • silicon
  • soft lithography

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Performance of ultrathin silicon solar microcells with nanostructures of relief formed by soft imprint lithography for broad band absorption enhancement'. Together they form a unique fingerprint.

Cite this