Ultrathin silicon solar microcells for semitransparent, mechanically flexible and microconcentrator module designs

Jongseung Yoon, Alfred J. Baca, Sang Il Park, Paulius Elvikis, Joseph B. Geddes, Lanfang Li, Rak Hwan Kim, Jianliang Xiao, Shuodao Wang, Tae Ho Kim, Michael J. Motala, Bok Yeop Ahn, Eric B. Duoss, Jennifer A. Lewis, Ralph G. Nuzzo, Placid M. Ferreira, Yonggang Huang, Angus Rockett, John A. Rogers

Research output: Contribution to journalArticlepeer-review


The high natural abundance of silicon, together with its excellent reliability and good efficiency in solar cells, suggest its continued use in production of solar energy, on massive scales, for the foreseeable future. Although organics, nanocrystals, nanowires and other new materials hold significant promise, many opportunities continue to exist for research into unconventional means of exploiting silicon in advanced photovoltaic systems. Here, we describe modules that use large-scale arrays of silicon solar microcells created from bulk wafers and integrated in diverse spatial layouts on foreign substrates by transfer printing. The resulting devices can offer useful features, including high degrees of mechanical flexibility, user-definable transparency and ultrathin-form-factor microconcentrator designs. Detailed studies of the processes for creating and manipulating such microcells, together with theoretical and experimental investigations of the electrical, mechanical and optical characteristics of several types of module that incorporate them, illuminate the key aspects.

Original languageEnglish (US)
Pages (from-to)907-915
Number of pages9
JournalNature Materials
Issue number11
StatePublished - Nov 16 2008

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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