Contacting boron emitters on n-type silicon solar cells with aluminium-free silver screen-printing pastes
| Autor: | Susanne Fritz, Giso Hahn, Josh Engelhardt, Stefanie Ebert |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Silicon business.industry 020209 energy Diffusion Metallurgy chemistry.chemical_element 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Condensed Matter Physics Metal chemistry Aluminium visual_art Screen printing 0202 electrical engineering electronic engineering information engineering visual_art.visual_art_medium Optoelectronics General Materials Science ddc:530 0210 nano-technology business Boron Common emitter |
| Popis: | In the production of n-type Si solar cells, B diffusion is commonly applied to form the p+ emitter. Up to now, Ag screen-printing pastes, generally used to contact P emitters, had been incapable of reliably contact B emitters. Therefore, a small amount of Al is generally added to Ag pastes to allow for reasonable contact resistances. The addition of Al, however, results in deep metal spikes growing into the Si surface that can penetrate the emitter. Losses in open-circuit voltage are attributed to these deep metal spikes. In this investigation we demonstrate, that state-of-the-art Al-free Ag screen-printing pastes are capable to contact BBr3-based B emitters covered with different dielectric layers and reach specific contact resistances |
| Databáze: | OpenAIRE |
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