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Title: | Efficiency gain in plated bifacial n-type PERT cells by means of a selective emitter approach using selective epitaxy | Authors: | Recamán Payo, María Li, Yuandong Russell, Richard Singh, Sukhvinder Kuzma Filipek, Izabela DUERINCKX, Filip Szlufcik, Jozef POORTMANS, Jef |
Issue Date: | 2020 | Publisher: | ELSEVIER | Source: | Solar energy materials and solar cells, 204 (Art N° 110173) | Abstract: | This work evaluates the potential of selective epitaxy to mitigate the recombination losses at the p-type contact regions of plated bifacial n-type PERT cells. Following the growth of a 500 nm, 2.5 10(19) cm(-3) boron doped epitaxial layer at the emitter contact regions defined by laser ablation of the passivating dielectrics, both an increase in V-oc (+6 mV) and FF (+ 1% absolute) are measured in the final cells compared to the reference with a homogeneous diffused emitter. These results come with an average efficiency gain of 0.3 and 0.5% absolute for front and rear side illumination, respectively. If the diffused, blanket emitter in the passivated regions is replaced by a thicker, lowly doped epitaxial profile (3 mu m, 5 10(18) cm(-3)) to further reduce recombination, an additional rise in implied V-oc after metallization of 10 mV is estimated. This increase would be the result of a reduction in J(0,pass, emitter) (down to 6 fA/cm(2)) and J(0,plated, emitter) (down to 1967 fA/cm(2)). | Keywords: | Selective epitaxy;Plating Bifacial solar cell;Passivating contact;p-Type contact | Document URI: | http://hdl.handle.net/1942/34554 | ISSN: | 0927-0248 | e-ISSN: | 1879-3398 | DOI: | 10.1016/j.solmat.2019.110173 | ISI #: | 000501656500028 | Rights: | 2019 Published by Elsevier B.V. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2022 |
Appears in Collections: | Research publications |
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1-s2.0-S0927024819305021-main.pdf Restricted Access | Published version | 2.87 MB | Adobe PDF | View/Open Request a copy |
Efficiency gain in plated bifacial n-type PERT cells by means of a selective emitter approach using selective epitaxy.pdf | Peer-reviewed author version | 2.52 MB | Adobe PDF | View/Open |
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