Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating
<p dir="ltr">We demonstrate that laser peening coupled with sintering of CdTe nanowire films substantially enhances film quality and charge transfer while largely maintaining basic particle morphology. During the laser peening phase, a shockwave is used to compress the film. Laser si...
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2015
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| author | Kelly M. Rickey (19568770) |
| author2 | Qiong Nian (1477645) Genqiang Zhang (1794397) Liangliang Chen (380152) Sergey Suslov (3688918) S. Venkataprasad Bhat (17755241) Yue Wu (1262184) Gary J. Cheng (1405315) Xiulin Ruan (1475545) |
| author2_role | author author author author author author author author |
| author_facet | Kelly M. Rickey (19568770) Qiong Nian (1477645) Genqiang Zhang (1794397) Liangliang Chen (380152) Sergey Suslov (3688918) S. Venkataprasad Bhat (17755241) Yue Wu (1262184) Gary J. Cheng (1405315) Xiulin Ruan (1475545) |
| author_role | author |
| dc.creator.none.fl_str_mv | Kelly M. Rickey (19568770) Qiong Nian (1477645) Genqiang Zhang (1794397) Liangliang Chen (380152) Sergey Suslov (3688918) S. Venkataprasad Bhat (17755241) Yue Wu (1262184) Gary J. Cheng (1405315) Xiulin Ruan (1475545) |
| dc.date.none.fl_str_mv | 2015-11-03T03:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1038/srep16052 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Welding_of_Semiconductor_Nanowires_by_Coupling_Laser-Induced_Peening_and_Localized_Heating/26974786 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Electronics, sensors and digital hardware Materials engineering Nanotechnology Electronic properties and materials Nanowires Synthesis and processing |
| dc.title.none.fl_str_mv | Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">We demonstrate that laser peening coupled with sintering of CdTe nanowire films substantially enhances film quality and charge transfer while largely maintaining basic particle morphology. During the laser peening phase, a shockwave is used to compress the film. Laser sintering comprises the second step, where a nanosecond pulse laser beam welds the nanowires. Microstructure, morphology, material content and electrical conductivities of the films are characterized before and after treatment. The morphology results show that laser peening can decrease porosity and bring nanowires into contact and pulsed laser heating fuses those contacts. Multiphysics simulations coupling electromagnetic and heat transfer modules demonstrate that during pulsed laser heating, local EM field enhancement is generated specifically around the contact areas between two semiconductor nanowires, indicating localized heating. The characterization results indicate that solely laser peening or sintering can only moderately improve the thin film quality; however, when coupled together as laser peen sintering (LPS), the electrical conductivity enhancement is dramatic. LPS can decrease resistivity up to a factor of ~10,000, resulting in values on the order of ~105 Ω-cm in some cases, which is comparable to CdTe thin films. Our work demonstrates that LPS is an effective processing method to obtain high-quality semiconductor nanocrystal films.</p><h2>Other Information</h2><p dir="ltr">Published in: Scientific Reports<br>License: <a href="https://creativecommons.org/licenses/by/4.0" target="_blank">https://creativecommons.org/licenses/by/4.0</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1038/srep16052" target="_blank">https://dx.doi.org/10.1038/srep16052</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_4128ec17cce9de7afb1283d5edae17d7 |
| identifier_str_mv | 10.1038/srep16052 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/26974786 |
| publishDate | 2015 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized HeatingKelly M. Rickey (19568770)Qiong Nian (1477645)Genqiang Zhang (1794397)Liangliang Chen (380152)Sergey Suslov (3688918)S. Venkataprasad Bhat (17755241)Yue Wu (1262184)Gary J. Cheng (1405315)Xiulin Ruan (1475545)EngineeringElectronics, sensors and digital hardwareMaterials engineeringNanotechnologyElectronic properties and materialsNanowiresSynthesis and processing<p dir="ltr">We demonstrate that laser peening coupled with sintering of CdTe nanowire films substantially enhances film quality and charge transfer while largely maintaining basic particle morphology. During the laser peening phase, a shockwave is used to compress the film. Laser sintering comprises the second step, where a nanosecond pulse laser beam welds the nanowires. Microstructure, morphology, material content and electrical conductivities of the films are characterized before and after treatment. The morphology results show that laser peening can decrease porosity and bring nanowires into contact and pulsed laser heating fuses those contacts. Multiphysics simulations coupling electromagnetic and heat transfer modules demonstrate that during pulsed laser heating, local EM field enhancement is generated specifically around the contact areas between two semiconductor nanowires, indicating localized heating. The characterization results indicate that solely laser peening or sintering can only moderately improve the thin film quality; however, when coupled together as laser peen sintering (LPS), the electrical conductivity enhancement is dramatic. LPS can decrease resistivity up to a factor of ~10,000, resulting in values on the order of ~105 Ω-cm in some cases, which is comparable to CdTe thin films. Our work demonstrates that LPS is an effective processing method to obtain high-quality semiconductor nanocrystal films.</p><h2>Other Information</h2><p dir="ltr">Published in: Scientific Reports<br>License: <a href="https://creativecommons.org/licenses/by/4.0" target="_blank">https://creativecommons.org/licenses/by/4.0</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1038/srep16052" target="_blank">https://dx.doi.org/10.1038/srep16052</a></p>2015-11-03T03:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1038/srep16052https://figshare.com/articles/journal_contribution/Welding_of_Semiconductor_Nanowires_by_Coupling_Laser-Induced_Peening_and_Localized_Heating/26974786CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/269747862015-11-03T03:00:00Z |
| spellingShingle | Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating Kelly M. Rickey (19568770) Engineering Electronics, sensors and digital hardware Materials engineering Nanotechnology Electronic properties and materials Nanowires Synthesis and processing |
| status_str | publishedVersion |
| title | Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating |
| title_full | Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating |
| title_fullStr | Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating |
| title_full_unstemmed | Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating |
| title_short | Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating |
| title_sort | Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating |
| topic | Engineering Electronics, sensors and digital hardware Materials engineering Nanotechnology Electronic properties and materials Nanowires Synthesis and processing |