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|Title:||Morphology-tunable assembly of periodically aligned Si nanowire and radial pn junction arrays for solar cell applications||Authors:||Li, Xiaocheng
Tay, Beng Kang
Teo, Edwin Hang Tong
|Keywords:||DRNTU::Engineering::Electrical and electronic engineering||Issue Date:||2012||Source:||Li, X., Liang, K., Tay, B. K., & Teo, E. H. T. (2012). Morphology-tunable assembly of periodically aligned Si nanowire and radial pn junction arrays for solar cell applications. Applied Surface Science, 258(17), 6169–6176.||Series/Report no.:||Applied surface science||Abstract:||Large-area periodically aligned Si nanowire (PASiNW) arrays have been fabricated on Si substrates via a templated catalytic chemical etching process. The diameter, length, packing density, and even the shape of Si nanowires (SiNWs) could be precisely controlled and tuned. A local coupling redox mechanism involving the reduction of H2O2 on silver particles and the dissolution of Si is responsible for formation of SiNWs. With the as-prepared SiNWs as templates, three kinds of PASiNW radial pn junction structures were fabricated on Si substrates via a solid-state phosphorous diffusion strategy and their applications in solar cells were also explored. The PASiNW radial pn junction-based solar cell with big diameter and interspace shows the highest power conversion efficiency (PCE) of 4.10% among the three kinds of devices. Further optimization, including surface passivation and electrode contact, is still needed for the higher efficiency PASiNW radial pn junction-based solar cells in the future.||URI:||https://hdl.handle.net/10356/99618
|ISSN:||0169-4332||DOI:||10.1016/j.apsusc.2012.02.091||Rights:||© 2012 Elsevier B.V.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||EEE Journal Articles|
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