Influence of Periodic Surface Nanopatterning Profiles on Series Resistance in Thin-Film Crystalline Silicon Heterojunction Solar Cells

Islam Abdo, Christos Trompoukis, Loic Tous, Valerie Depauw, Rafik Guindi, Ivan Gordon, Ounsi El Daif

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In the frame of the development of thin crystalline silicon solar cell technologies, surface nanopatterning of silicon is gaining importance. Its impact on the material quality is, however, not yet fully controlled.We investigate here the influence of surface nanotexturing on the series resistance of a contacting scheme relevant for thin-film crystalline silicon heterojunction solar cells. Twodimensional periodic nanotextures are fabricated using a combination of nanoimprint lithography and either dry or wet etching, while random pyramid texturing is used for benchmarking. We compare these texturing techniques in terms of their effect on the series resistance of a solar cell through a study of the sheet resistance (R<inf>sh</inf> ) and contact resistance (R<inf>c</inf>) of its front layers, i.e., a sputtered transparent conductive oxide and evaporated metal contacts. We have found by four-point probe and the transfer length methods that dry-etched nanopatterns render the highestRsh and R<inf>c</inf> values. Wet-etched nanopatterns, on the other hand, have less impact on R<inf>c</inf> and render R<inf>sh</inf> similar to that obtained from the nontextured case.

Original languageEnglish
Article number7145385
Pages (from-to)1319-1324
Number of pages6
JournalIEEE Journal of Photovoltaics
Volume5
Issue number5
DOIs
Publication statusPublished - 1 Sep 2015

Fingerprint

Texturing
Silicon
Heterojunctions
heterojunctions
Solar cells
solar cells
Crystalline materials
Nanoimprint lithography
Thin films
Dry etching
Wet etching
Sheet resistance
Silicon solar cells
silicon
Benchmarking
Contact resistance
thin films
profiles
Oxides
Metals

Keywords

  • Crystalline silicon
  • four-point probe
  • inverted pyramids
  • light trapping
  • nanoimprint
  • surface texturing
  • thin-film solar cells
  • Transfer length method (TLM)

ASJC Scopus subject areas

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

Cite this

Influence of Periodic Surface Nanopatterning Profiles on Series Resistance in Thin-Film Crystalline Silicon Heterojunction Solar Cells. / Abdo, Islam; Trompoukis, Christos; Tous, Loic; Depauw, Valerie; Guindi, Rafik; Gordon, Ivan; El Daif, Ounsi.

In: IEEE Journal of Photovoltaics, Vol. 5, No. 5, 7145385, 01.09.2015, p. 1319-1324.

Research output: Contribution to journalArticle

Abdo, Islam ; Trompoukis, Christos ; Tous, Loic ; Depauw, Valerie ; Guindi, Rafik ; Gordon, Ivan ; El Daif, Ounsi. / Influence of Periodic Surface Nanopatterning Profiles on Series Resistance in Thin-Film Crystalline Silicon Heterojunction Solar Cells. In: IEEE Journal of Photovoltaics. 2015 ; Vol. 5, No. 5. pp. 1319-1324.
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