Nanophotonic approaches to colourful solar cells and modules

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Halme, Janne Speranza, Roberto 2018-09-03T12:44:34Z 2018-09-03T12:44:34Z 2018-08-21
dc.description.abstract The focus of this work was first to compile a literature review of the most relevant nanophotonic approaches proposed to realize structural colours for decorative and building-integrated solar cells and modules. Then, based on the gathered information, an alternative fabrication technique was proposed and experimentally investigated. From the literature review it was observed that the fabrication of colourful solar cells had been successfully achieved by integrating light filtering structures showing reflective structural colours (as opposed to light absorbing colours, e.g. dyes and pigments or metals), with different photovoltaic technologies. In general, the exploited light filtering mechanisms can be divided in multilayer interference, thin-film interference, diffraction gratins, plasmonic resonance and photonic bandgap in photonic crystals. The best results in terms of performance of the fabricated coloured devices had been obtained when the colouring structures had been integrated with standard, industrial crystalline silicon solar cells. On the other hand, advantages in terms of device thickness (amount of needed material) and colour purity had been obtained when the coloring structures had been used with a customized fabricated device (thin-film amorphous silicon solar cells, dye sensitized solar cells and perovskite solar cells). In the experimental part, a proofof-concept was presented for the fabrication of a colour filter by inkjet-printing three dimensional photonic crystals on glass. A colour filter fabricated in this way could be used with all photovoltaic technologies, since it consist of a separate semi-transparent layer that can placed over any kind of solar cell. The structure was realized by inkjet printing, which allows flexible control over pattern design and accurate material deposition, allowing for the possibility of printing multi- and single-coloured patterns on a photovoltaic device. According to the preliminary results, further research would be needed to intensity of the coloured reflection and weaken the broad-band light scattering by the inkjet-printed photonic crystals. en
dc.format.extent 94
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.title Nanophotonic approaches to colourful solar cells and modules en
dc.type G2 Pro gradu, diplomityö fi Perustieteiden korkeakoulu fi
dc.subject.keyword colourful solar cells en
dc.subject.keyword structural colours en
dc.subject.keyword photonic crystals en
dc.subject.keyword building-integrated photovoltiacs en
dc.subject.keyword reflective colours en
dc.identifier.urn URN:NBN:fi:aalto-201809034901
dc.programme.major Engineering Physics fi
dc.programme.mcode SCI3056 fi
dc.type.ontasot Master's thesis en
dc.type.ontasot Diplomityö fi
dc.contributor.supervisor Halme, Janne
dc.programme Master’s Progamme in Engineering Physics fi
local.aalto.electroniconly yes
local.aalto.openaccess yes

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