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Laser fired contacts applied to the rear surface of heterojunction silicon solar cells
dc.contributor.author | Martín García, Isidro |
dc.contributor.author | Labrune, M. |
dc.contributor.author | Salomon, A. |
dc.contributor.author | Roca i Cabarrocas, Pere |
dc.contributor.author | Alcubilla González, Ramón |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica |
dc.date.accessioned | 2011-12-29T16:04:03Z |
dc.date.available | 2011-12-29T16:04:03Z |
dc.date.created | 2011-11 |
dc.date.issued | 2011-11 |
dc.identifier.citation | Martin, I. [et al.]. Laser fired contacts applied to the rear surface of heterojunction silicon solar cells. "Solar energy materials and solar cells", Novembre 2011, vol. 95, núm. 11, p. 3119-3123. |
dc.identifier.issn | 0927-0248 |
dc.identifier.uri | http://hdl.handle.net/2117/14362 |
dc.description.abstract | In this work, we fabricate heterojunction silicon solar cells on p-type substrates whose rear surface configuration is based on dielectric passivation and laser fired contacts (LFC cells). This is an alternative to boron-doped amorphous silicon film, with which we also fabricate solar cells for direct comparison (HJ cells). As substrates, 3.5 and 0.8 Ω cm p-type double-side polished FZ c-Si wafers are used. Regarding surface passivation for highly doped substrates, LFC configuration has some advantage due to the higher difficulty in creating an efficient amorphous back surface field. Additionally, those substrates are also more advantageous in terms of carrier injection when the rear surface is locally contacted. Thus LFC cells made on 0.8 Ω cm substrates reach Voc values up to 680 mV, in the same range as that of their HJ cell counterpart, with better FF demonstrating that LFC configuration is a feasible alternative for highly doped substrates. Focusing on the impact of the distance between rear contacts on cell performance, we found a trade-off between open circuit voltage Voc and fill factor FF. Finally electroluminescence characterization and the dependence of Voc on pitch, modeled by Fischer's equation, indicate that the depassivated area due to the laser processing of the contacts is bigger than the contacted area. |
dc.format.extent | 5 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Energies::Energia solar fotovoltaica |
dc.subject | Àrees temàtiques de la UPC::Energies::Energia solar fotovoltaica::Cèl·lules solars |
dc.subject.lcsh | Solar cells |
dc.subject.lcsh | Silicon solar cells |
dc.title | Laser fired contacts applied to the rear surface of heterojunction silicon solar cells |
dc.type | Article |
dc.subject.lemac | Cèl·lules solars |
dc.subject.lemac | Energia solar fotovoltaica |
dc.contributor.group | Universitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies |
dc.identifier.doi | 10.1016/j.solmat.2011.06.049 |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 6003686 |
dc.description.version | Postprint (published version) |
local.citation.author | Martin, I.; Labrune, M.; Salomon, A.; Roca, P.; Alcubilla, R. |
local.citation.publicationName | Solar energy materials and solar cells |
local.citation.volume | 95 |
local.citation.number | 11 |
local.citation.startingPage | 3119 |
local.citation.endingPage | 3123 |
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