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Showing 1 to 7 of 7 entries
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Cloaking of solar cell contacts at the onset of Rayleigh scattering.

Scientific reports

San Román E, Vitrey A, Buencuerpo J, Prieto I, Llorens JM, García-Martín A, Alén B, Chaudhuri A, Neumann A, Brueck SR, Ripalda JM.
PMID: 27339390
Sci Rep. 2016 Jun 24;6:28669. doi: 10.1038/srep28669.

Electrical contacts on the top surface of solar cells and light emitting diodes cause shadow losses. The phenomenon of extraordinary optical transmission through arrays of subwavelength holes suggests the possibility of engineering such contacts to reduce the shadow using...

Optically-thick 300 nm GaAs solar cells using adjacent photonic crystals.

Optics express

Buencuerpo J, Steiner MA, Tamboli AC.
PMID: 32403851
Opt Express. 2020 Apr 27;28(9):13845-13860. doi: 10.1364/OE.391737.

Ultra-thin photovoltaics offer the potential for increasing efficiency while minimizing costs. However, a suitable light trapping strategy is needed to reach the optically thick regime for otherwise thin-film structures. III-V materials can benefit from simple adjacent light trapping structures,...

Light-trapping in photon enhanced thermionic emitters.

Optics express

Buencuerpo J, Llorens JM, Zilio P, Raja W, Cunha J, Alabastri A, Zaccaria RP, Martí A, Versloot T.
PMID: 26406751
Opt Express. 2015 Sep 21;23(19):A1220-35. doi: 10.1364/OE.23.0A1220.

A series of photonic crystal structures are optimized for a photon enhanced thermionic emitter. With realistic parameter values to describe a p-type GaAs device we find an efficiency above 10%. The light-trapping structures increases the performance by 2% over...

Optical absorption enhancement in a hybrid system photonic crystal - thin substrate for photovoltaic applications.

Optics express

Buencuerpo J, Munioz-Camuniez LE, Dotor ML, Postigo PA.
PMID: 22828614
Opt Express. 2012 Jul 02;20:A452-64. doi: 10.1364/OE.20.00A452.

A hybrid approach for light trapping using photonic crystal nanostructures (nanorods, nanopillars or nanoholes) on top of an ultra thin film as a substrate is presented. The combination of a nanopatterned layer with a thin substrate shows an enhanced...

Nano-cones for broadband light coupling to high index substrates.

Scientific reports

Buencuerpo J, Torné L, Álvaro R, Llorens JM, Dotor ML, Ripalda JM.
PMID: 27924859
Sci Rep. 2016 Dec 07;6:38682. doi: 10.1038/srep38682.

The moth-eye structure has been proposed several times as an antireflective coating to replace the standard optical thin films. Here, we experimentally demonstrate the feasibility of a dielectric moth-eye structure as an antireflective coating for high-index substrates, like GaAs....

Broadband antireflective nano-cones for tandem solar cells.

Optics express

Buencuerpo J, Llorens JM, Dotor ML, Ripalda JM.
PMID: 25968798
Opt Express. 2015 Apr 06;23(7):A322-36. doi: 10.1364/OE.23.00A322.

Broadband solar cell antireflection coatings made of nano-cones are studied in square lattices of ZnS, TiO(2) and Si(3)N(4). In the best case, the spectrally integrated transmittance (accounting for both reflection and dielectric absorption losses) for direct solar radiation is...

Solar cell designs by maximizing energy production based on machine learning clustering of spectral variations.

Nature communications

Ripalda JM, Buencuerpo J, García I.
PMID: 30510195
Nat Commun. 2018 Dec 03;9(1):5126. doi: 10.1038/s41467-018-07431-3.

Due to spectral sensitivity effects, using a single standard spectrum leads to a large uncertainty when estimating the yearly averaged photovoltaic efficiency or energy yield. Here we demonstrate how machine learning techniques can reduce the yearly spectral sets by...

Showing 1 to 7 of 7 entries