Morphology-tunable assembly of periodically aligned Si nanowire and radial pn junction arrays for solar cell applications
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 mech...
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sg-ntu-dr.10356-996182020-03-07T14:00:31Z Morphology-tunable assembly of periodically aligned Si nanowire and radial pn junction arrays for solar cell applications Li, Xiaocheng Liang, Kun Tay, Beng Kang Teo, Edwin Hang Tong School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering 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. 2013-07-09T01:25:00Z 2019-12-06T20:09:33Z 2013-07-09T01:25:00Z 2019-12-06T20:09:33Z 2012 2012 Journal Article 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. 0169-4332 https://hdl.handle.net/10356/99618 http://hdl.handle.net/10220/11025 10.1016/j.apsusc.2012.02.091 en Applied surface science © 2012 Elsevier B.V. |
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DRNTU::Engineering::Electrical and electronic engineering Li, Xiaocheng Liang, Kun Tay, Beng Kang Teo, Edwin Hang Tong Morphology-tunable assembly of periodically aligned Si nanowire and radial pn junction arrays for solar cell applications |
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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. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Li, Xiaocheng Liang, Kun Tay, Beng Kang Teo, Edwin Hang Tong |
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Article |
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Li, Xiaocheng Liang, Kun Tay, Beng Kang Teo, Edwin Hang Tong |
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Li, Xiaocheng |
title |
Morphology-tunable assembly of periodically aligned Si nanowire and radial pn junction arrays for solar cell applications |
title_short |
Morphology-tunable assembly of periodically aligned Si nanowire and radial pn junction arrays for solar cell applications |
title_full |
Morphology-tunable assembly of periodically aligned Si nanowire and radial pn junction arrays for solar cell applications |
title_fullStr |
Morphology-tunable assembly of periodically aligned Si nanowire and radial pn junction arrays for solar cell applications |
title_full_unstemmed |
Morphology-tunable assembly of periodically aligned Si nanowire and radial pn junction arrays for solar cell applications |
title_sort |
morphology-tunable assembly of periodically aligned si nanowire and radial pn junction arrays for solar cell applications |
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2013 |
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https://hdl.handle.net/10356/99618 http://hdl.handle.net/10220/11025 |
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1681048402590171136 |