A protocrystalline phase is a distinct phase occurring during crystal growth, which evolves into a microcrystalline form. The term is typically associated with silicon films in optical applications such as solar cells. [1]
Applications
Silicon solar cells
Amorphous silicon (a-Si) is a popular solar cell material owing to its low cost and ease of production. Owing to its disordered structure ( Urbach tail), its absorption extends to the energies below the band gap, resulting in a wide-range spectral response; however, it has a relatively low solar cell efficiency. Protocrystalline Si (pc-Si:H) also has a relatively low absorption near the band gap, owing to its more ordered crystalline structure. Thus, protocrystalline and amorphous silicon can be combined in a tandem solar cell, where the top thin layer of a-Si:H absorbs short-wavelength light whereas the underlying protocrystalline silicon layer absorbs the longer wavelengths [2]
See also
References
- ^ Ishikawa, Yasuaki; Schubert, Markus B. (2006-09-07). "Flexible Protocrystalline Silicon Solar Cells with Amorphous Buffer Layer". Japanese Journal of Applied Physics. 45 (9A): 6812–6822. doi: 10.1143/jjap.45.6812. ISSN 0021-4922.
- ^ Ahn, Jun Yong; Jun, Kyung Hoon; Lim, Koeng Su; Konagai, Makoto (2003-03-10). "Stable protocrystalline silicon and unstable microcrystalline silicon at the onset of a microcrystalline regime". Applied Physics Letters. 82 (11): 1718–1720. Bibcode: 2003ApPhL..82.1718A. doi: 10.1063/1.1561161. ISSN 0003-6951.
External links
- Wilken, Karen (2017). "Low temperature thin-film silicon solar cells on flexible plastic substrates" (PDF). Advances in Systems Analysis. 377. Forschungszentrum, Zentralbibliothek. hdl: 2128/14543. ISBN 978-3-95806-235-1. ISSN 1866-1793. OCLC 1075618416.
 | This crystallography-related article is a stub. You can help Wikipedia by expanding it. |
A protocrystalline phase is a distinct phase occurring during crystal growth, which evolves into a microcrystalline form. The term is typically associated with silicon films in optical applications such as solar cells. [1]
Applications
Silicon solar cells
Amorphous silicon (a-Si) is a popular solar cell material owing to its low cost and ease of production. Owing to its disordered structure ( Urbach tail), its absorption extends to the energies below the band gap, resulting in a wide-range spectral response; however, it has a relatively low solar cell efficiency. Protocrystalline Si (pc-Si:H) also has a relatively low absorption near the band gap, owing to its more ordered crystalline structure. Thus, protocrystalline and amorphous silicon can be combined in a tandem solar cell, where the top thin layer of a-Si:H absorbs short-wavelength light whereas the underlying protocrystalline silicon layer absorbs the longer wavelengths [2]
See also
References
- ^ Ishikawa, Yasuaki; Schubert, Markus B. (2006-09-07). "Flexible Protocrystalline Silicon Solar Cells with Amorphous Buffer Layer". Japanese Journal of Applied Physics. 45 (9A): 6812–6822. doi: 10.1143/jjap.45.6812. ISSN 0021-4922.
- ^ Ahn, Jun Yong; Jun, Kyung Hoon; Lim, Koeng Su; Konagai, Makoto (2003-03-10). "Stable protocrystalline silicon and unstable microcrystalline silicon at the onset of a microcrystalline regime". Applied Physics Letters. 82 (11): 1718–1720. Bibcode: 2003ApPhL..82.1718A. doi: 10.1063/1.1561161. ISSN 0003-6951.
External links
- Wilken, Karen (2017). "Low temperature thin-film silicon solar cells on flexible plastic substrates" (PDF). Advances in Systems Analysis. 377. Forschungszentrum, Zentralbibliothek. hdl: 2128/14543. ISBN 978-3-95806-235-1. ISSN 1866-1793. OCLC 1075618416.
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