Three-dimensional nanopillar-array photovoltaics on low-cost and flexible substrates

Zhiyong Fan, Haleh Razavi, Jae Won Do, Aimee Moriwaki, Onur Ergen, Yu Lun Chueh, Paul W. Leu, Johnny C. Ho, Toshitake Takahashi, Lothar A. Reichertz, Steven Neale, Kyoungsik Yu, Ming Wu, Joel W. Ager, Ali Javey

研究成果: Contribution to journalArticle査読

924 被引用数 (Scopus)


Solar energy represents one of the most abundant and yet least harvested sources of renewable energy. In recent years, tremendous progress has been made in developing photovoltaics that can be potentially mass deployed1-3. Of particular interest to cost-effective solar cells is to use novel device structures and materials processing for enabling acceptable efficiencies 4-6. In this regard, here, we report the direct growth of highly regular, single-crystalline nanopillar arrays of optically active semiconductors on aluminium substrates that are then configured as solar-cell modules. As an example, we demonstrate a photovoltaic structure that incorporates three-dimensional, single-crystalline n-CdS nanopillars, embedded in polycrystalline thin films of p-CdTe, to enable high absorption of light and efficient collection of the carriers. Through experiments and modelling, we demonstrate the potency of this approach for enabling highly versatile solar modules on both rigid and flexible substrates with enhanced carrier collection efficiency arising from the geometric configuration of the nanopillars.

ジャーナルNature Materials
出版ステータス出版済み - 8 2009

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学


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