CdTe solar cell with industrial Al:ZnO on soda-lime glass

Ramesh G. Dhere, Maximilien Bonnet-Eymard, Emilie Charlet, Emmanuelle Peter, Joel N. Duenow, Jian V. Li, Darius Kuciauskas, Timothy A. Gessert

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

One avenue to enhance CdTe cell performance is to improve the optical transmission of the transparent conductive oxide (TCO)/window layer stack. In this paper, we examine soda-lime float glass coated with an Al-doped ZnO layer and a buffer layer. The possible advantages of using a ZnO-based TCO include reduced surface roughness, improved transparency, and an integrated buffer layer that can be optimized for use in a CdTe PV device. Device processing was modified to address the chemical and thermal differences between the ZnO-based TCO stack produced by Saint-Gobain and the TCOs previously used at the National Renewable Energy Laboratory (NREL). These process modifications produced ∼ 8% efficiency for devices without a buffer layer. Incorporation of buffer layers has already produced devices with ∼ 11% and > 12% efficiency for CdTe deposition temperatures of 570° and 500°C, respectively.

Original languageEnglish
Pages (from-to)7142-7145
Number of pages4
JournalThin Solid Films
Volume519
Issue number21
DOIs
Publication statusPublished - 2011 Aug 31

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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