Influence of surface near doping concentration on contact formation of silver thick film contacts
We investigate the properties of silver thick film contacts on phosphorus doped alkaline textured silicon surfaces with varying surface doping levels. Using scanning electron microscopy, we find that the surface near doping concentration influences the formation of silver crystallites especially tho...
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| Veröffentlicht in: | Solar energy materials and solar cells 2016-08, Vol.153, p.25-30 |
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| container_title | Solar energy materials and solar cells |
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| creator | Rothhardt, P. Meier, S. Hoenig, R. Wolf, A. Biro, D. |
| description | We investigate the properties of silver thick film contacts on phosphorus doped alkaline textured silicon surfaces with varying surface doping levels. Using scanning electron microscopy, we find that the surface near doping concentration influences the formation of silver crystallites especially those that are in direct contact with both the silicon surface and the contact finger. The observed correlation between direct silver crystallite imprint coverage and specific contact resistance allows for extracting the specific contact resistance of individual crystallites to be approximately 3.3µΩcm2, which agrees well with theoretical predictions. Furthermore we present a new approach that allows for a quantitative separation of direct and indirect current conduction channels. For our experimental conditions, the assumption of current conduction exclusively by transport through silver crystallites adequately describes the experimental data. Finally we fabricate bifacial n-type solar cells with peak efficiencies of 19.9%. |
| doi_str_mv | 10.1016/j.solmat.2016.03.030 |
| format | Article |
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Using scanning electron microscopy, we find that the surface near doping concentration influences the formation of silver crystallites especially those that are in direct contact with both the silicon surface and the contact finger. The observed correlation between direct silver crystallite imprint coverage and specific contact resistance allows for extracting the specific contact resistance of individual crystallites to be approximately 3.3µΩcm2, which agrees well with theoretical predictions. Furthermore we present a new approach that allows for a quantitative separation of direct and indirect current conduction channels. For our experimental conditions, the assumption of current conduction exclusively by transport through silver crystallites adequately describes the experimental data. 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Finally we fabricate bifacial n-type solar cells with peak efficiencies of 19.9%.</description><subject>Bifacial</subject><subject>Contact</subject><subject>Contact formation</subject><subject>Contact resistance</subject><subject>Crystallites</subject><subject>Current conduction</subject><subject>Doping</subject><subject>Doping concentration</subject><subject>Fingers</subject><subject>Formations</subject><subject>Screen printing</subject><subject>Silicon</subject><subject>Silver contacts</subject><subject>Thick films</subject><issn>0927-0248</issn><issn>1879-3398</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqNUMtKxDAUDaLgOPoHLrJ003qTpo9sBBl8DAy40XVI00Qzts2YpAP-vRk6bkXugfs658I9CF0TyAmQ6nabB9cPMuY0dTkUCXCCFqSpeVYUvDlFC-C0zoCy5hxdhLAFAFoVbIHkejT9pEelsTM4TN7IVI5aety5nR3fsXJpOUYvo3UjTkiDKFXExvnhOExK2--1x_HDqk9sbD_80sIlOjOyD_rqmJfo7fHhdfWcbV6e1qv7TaaKmsasYyWllalTtC1IqSoiwXSGk1Ir2WqpOt50NUiuy5K1inPaEpB11aquajUtluhmvrvz7mvSIYrBBqX7Xo7aTUGQhpaMsxqKf1ChqUrKSpaobKYq70Lw2oidt4P034KAOJgvtmI2XxzMF1AkQJLdzTKdPt5b7UVQ9uByZ71WUXTO_n3gB9hkkgs</recordid><startdate>201608</startdate><enddate>201608</enddate><creator>Rothhardt, P.</creator><creator>Meier, S.</creator><creator>Hoenig, R.</creator><creator>Wolf, A.</creator><creator>Biro, D.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7SP</scope><scope>7TB</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>L7M</scope></search><sort><creationdate>201608</creationdate><title>Influence of surface near doping concentration on contact formation of silver thick film contacts</title><author>Rothhardt, P. ; Meier, S. ; Hoenig, R. ; Wolf, A. ; Biro, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-d45226f7f7fbb0aac61a0fdf915ecabeacd98d70a9e554bc992b10a76bcd6be23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Bifacial</topic><topic>Contact</topic><topic>Contact formation</topic><topic>Contact resistance</topic><topic>Crystallites</topic><topic>Current conduction</topic><topic>Doping</topic><topic>Doping concentration</topic><topic>Fingers</topic><topic>Formations</topic><topic>Screen printing</topic><topic>Silicon</topic><topic>Silver contacts</topic><topic>Thick films</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rothhardt, P.</creatorcontrib><creatorcontrib>Meier, S.</creatorcontrib><creatorcontrib>Hoenig, R.</creatorcontrib><creatorcontrib>Wolf, A.</creatorcontrib><creatorcontrib>Biro, D.</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Solar energy materials and solar cells</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rothhardt, P.</au><au>Meier, S.</au><au>Hoenig, R.</au><au>Wolf, A.</au><au>Biro, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of surface near doping concentration on contact formation of silver thick film contacts</atitle><jtitle>Solar energy materials and solar cells</jtitle><date>2016-08</date><risdate>2016</risdate><volume>153</volume><spage>25</spage><epage>30</epage><pages>25-30</pages><issn>0927-0248</issn><eissn>1879-3398</eissn><abstract>We investigate the properties of silver thick film contacts on phosphorus doped alkaline textured silicon surfaces with varying surface doping levels. 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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Bifacial Contact Contact formation Contact resistance Crystallites Current conduction Doping Doping concentration Fingers Formations Screen printing Silicon Silver contacts Thick films |
| title | Influence of surface near doping concentration on contact formation of silver thick film contacts |
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