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Direct etching at the nanoscale through nanoparticle-directed capillary condensation
(2020-04-28)
Article.
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Article.
Accés obert
We report a method to locally deliver a chemical etchant at the nanoscale in the vapor phase by capillary condensation forming a meniscus at the nanoparticle/substrate interface. The process is simple, scalable and does ...
Textured PDMS films applied to thin crystalline silicon solar cells
(2019-12-18)
Article.
Accés obert
Article.
Accés obert
Front surface texturization is a standard procedure used to improve optical properties of photovoltaic devices. In some particular cases, such as when dealing with ultrathin substrates, common texturization techniques can ...
3D simulations of interdigitated back-contacted crystalline silicon solar cells on thin substrates
(2018-06-01)
Article.
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Article.
Accés obert
Interdigitated back contact technology is a promising candidate to be applied to thin crystalline silicon solar cells because of its simpler one-side interconnection while allowing a more flexible front surface treatment. ...
Impedance spectroscopy interpretation of silica and polystyrene colloidal suspensions
(2020-03-01)
Article.
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Article.
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Impedance spectroscopy differences between colloidal 295-nm silica and 300-nm polystyrene nanoparticles in deionized water are analyzed in this work. Using two different two-electrode measurement setups, designed for this ...
Electron selective contacts based on Al2O3/TiO2/ZnO stacks for crystalline silicon solar cells
(2018)
Comunicació de congrés.
Accés restringit per política de l'editorial
Comunicació de congrés.
Accés restringit per política de l'editorial
In the last years, our research group has focused on the development of Interdigitated Back Contacted (IBC) solar cells based on transition metal oxides. In particular, a very thin Al2O3/TiO2 stack deposited by ALD has ...
Low-cost high-sensitive suns-Voc measurement instrument to characterize c-Si solar cells
(2020-09-01)
Article.
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Article.
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Measuring open-circuit voltage (Voc) vs. light intensity (Suns) in solar cells permits the access of cell performance without the series resistance effect. This work shows the implementation of a Suns-Voc measurement system ...
Application of quasi-steady-state photoconductance technique to lifetime measurements on crystalline germanium substrates
(2020-07-01)
Article.
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Article.
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Similar to other high quality crystalline absorbers, an accurate knowledge of surface passivation of crystalline germanium (c-Ge) substrates is crucial for a straightforward improvement of photovoltaic device performance. ...
Influence of a gold seed in transparent V2Ox/Ag/V2Ox selective contacts for dopant-free silicon solar cells
(2018-11-05)
Article.
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Article.
Accés obert
Dielectric/metal/dielectric structures based on vanadium pentoxide with a thin silver interlayer have been optimized to replace traditional transparent electrodes. As would be expected, there is a tradeoff in the metal ...
Observation of photovoltaic effect within locally doped silicon nanojunctions using conductive probe AFM
(2020-10-01)
Article.
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Article.
Accés obert
Localized p-doped nanojunctions (200–300 nm in diameter) were formed in n-type crystalline silicon substrates and were characterized using scanning electron microscopy (SEM) and conductive-probe atomic force microscopy ...
Shedding light on the negative differential resistance effect observed in organic thin-film transistors
(2020-05-05)
Article.
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Article.
Accés obert
Organic semiconductor electronics has the potential to become a solid and industrially feasible technology, with new and stimulating applications such as the flexible and transparent electronic devices. However, organic ...