Advanced nano-crystalline SI:H solar cell structures using novel transparent conducting light trapping oxides (TCLO)

J. A.Anna Selvan, Yuan Min Li, Sheyu Guo, Alan E. Delahoy

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

For the achievement of maximum current density in nc-Si solar cells, transparent conducting light trapping oxides (TCLO) are developed to increase the optical path length of sunlight in the cells and to eliminate free carrier absorption in the transparent conducting oxides used at various locations in the cells. One possibility for the TCLO is a bilayer of high-mobility, titanium- or molybdenum-doped indium oxide (ITiO or IMO) and intrinsic-ZnO with specific light trapping structure. In order to increase the absorption in both short-wavelength and long-wavelength regions, we fabricate the TCLO with dual feature sizes that correspond to the whole wavelength range (up to 1150nm). Further, fabrication and characterization of the first single-layer TCLO is presented using ITiO. Microstructural analysis of such layers reveals remarkable surface features made up of 'nanorods' with width and length of ∼50nm and ∼500 nm, respectively. Application of TCLOs as superstrates for p-i-n ne-Si:H solar cells increased the current density by about ∼30% compared to solar cells on commercial textured substrates.

Original languageEnglish (US)
Pages (from-to)1492-1495
Number of pages4
JournalConference Record of the IEEE Photovoltaic Specialists Conference
StatePublished - Dec 1 2005
Event31st IEEE Photovoltaic Specialists Conference - 2005 - Lake Buena Vista, FL, United States
Duration: Jan 3 2005Jan 7 2005

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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