Si solar microcells for modules with reduced purity requirements, high voltage outputs and mechanically stretchable designs

Alfred J. Baca; Ki Jun Yu; Tyler A. Cain; Dae Hyeong Kim; Jongseung Yoon; Angus A. Rockett; Ralph G. Nuzzo; John A. Rogers

doi:10.1109/PVSC.2009.5411715

Si solar microcells for modules with reduced purity requirements, high voltage outputs and mechanically stretchable designs

Alfred J. Baca, Ki Jun Yu, Tyler A. Cain, Dae Hyeong Kim, Jongseung Yoon, Angus A. Rockett, Ralph G. Nuzzo, John A. Rogers

Materials Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We recently reported a strategy, in which modules consist of large-scale arrays of small, interconnected ultrathin (i.e. 1-20 μm) Si microcells (μ-cells) formed by anisotropic etching of bulk wafers and integrated with a soft printing technique. Here we report three new advances in this type of printed, μ-cell technology. First, we show that μ-cells formed with low purity, solar grade wafers (Dow Corning ® 101 SOG Si metal), can achieve efficiencies much higher than those possible with corresponding bulk cells formed with the same material. Second, we demonstrate high voltage mini-modules that incorporate these μ-cells and lead to high voltage outputs. Finally, we demonstrate the fabrication of mechanically stretchable solar cell modules which are non-coplanar (i.e. arch shaped). The results show that these materials and designs yield a stretchable layout that can undergo strains of up to 30 % without failure.

Original language	English (US)
Title of host publication	2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009
Pages	120-123
Number of pages	4
DOIs	https://doi.org/10.1109/PVSC.2009.5411715
State	Published - Dec 1 2009
Event	2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 - Philadelphia, PA, United States Duration: Jun 7 2009 → Jun 12 2009

Other

Other	2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009
Country	United States
City	Philadelphia, PA
Period	6/7/09 → 6/12/09

ASJC Scopus subject areas

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

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10.1109/PVSC.2009.5411715

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Baca, A. J., Yu, K. J., Cain, T. A., Kim, D. H., Yoon, J., Rockett, A. A., Nuzzo, R. G., & Rogers, J. A. (2009). Si solar microcells for modules with reduced purity requirements, high voltage outputs and mechanically stretchable designs. In 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 (pp. 120-123). [5411715] https://doi.org/10.1109/PVSC.2009.5411715

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title = "Si solar microcells for modules with reduced purity requirements, high voltage outputs and mechanically stretchable designs",

abstract = "We recently reported a strategy, in which modules consist of large-scale arrays of small, interconnected ultrathin (i.e. 1-20 μm) Si microcells (μ-cells) formed by anisotropic etching of bulk wafers and integrated with a soft printing technique. Here we report three new advances in this type of printed, μ-cell technology. First, we show that μ-cells formed with low purity, solar grade wafers (Dow Corning {\textregistered} 101 SOG Si metal), can achieve efficiencies much higher than those possible with corresponding bulk cells formed with the same material. Second, we demonstrate high voltage mini-modules that incorporate these μ-cells and lead to high voltage outputs. Finally, we demonstrate the fabrication of mechanically stretchable solar cell modules which are non-coplanar (i.e. arch shaped). The results show that these materials and designs yield a stretchable layout that can undergo strains of up to 30 % without failure.",

author = "Baca, {Alfred J.} and Yu, {Ki Jun} and Cain, {Tyler A.} and Kim, {Dae Hyeong} and Jongseung Yoon and Rockett, {Angus A.} and Nuzzo, {Ralph G.} and Rogers, {John A.}",

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doi = "10.1109/PVSC.2009.5411715",

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Baca, AJ, Yu, KJ, Cain, TA, Kim, DH, Yoon, J, Rockett, AA, Nuzzo, RG & Rogers, JA 2009, Si solar microcells for modules with reduced purity requirements, high voltage outputs and mechanically stretchable designs. in 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009., 5411715, pp. 120-123, 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009, Philadelphia, PA, United States, 6/7/09. https://doi.org/10.1109/PVSC.2009.5411715

Si solar microcells for modules with reduced purity requirements, high voltage outputs and mechanically stretchable designs. / Baca, Alfred J.; Yu, Ki Jun; Cain, Tyler A.; Kim, Dae Hyeong; Yoon, Jongseung; Rockett, Angus A.; Nuzzo, Ralph G.; Rogers, John A.

2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009. 2009. p. 120-123 5411715.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AB - We recently reported a strategy, in which modules consist of large-scale arrays of small, interconnected ultrathin (i.e. 1-20 μm) Si microcells (μ-cells) formed by anisotropic etching of bulk wafers and integrated with a soft printing technique. Here we report three new advances in this type of printed, μ-cell technology. First, we show that μ-cells formed with low purity, solar grade wafers (Dow Corning ® 101 SOG Si metal), can achieve efficiencies much higher than those possible with corresponding bulk cells formed with the same material. Second, we demonstrate high voltage mini-modules that incorporate these μ-cells and lead to high voltage outputs. Finally, we demonstrate the fabrication of mechanically stretchable solar cell modules which are non-coplanar (i.e. arch shaped). The results show that these materials and designs yield a stretchable layout that can undergo strains of up to 30 % without failure.

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