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XDSC Excitonic Dye Solar Cells

Unger, Eva, (författare)
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Hagfeldt
Uppsala universitet Teknisk-naturvetenskapliga vetenskapsområdet. (creator_code:org_t)
ISBN 978-91-554-8279-4
Uppsala : Acta Universitatis Upsaliensis, 2012
Engelska 93 s.
Serie: Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, 1651-6214 ; 899
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  • Doktorsavhandling (övrigt vetenskapligt)
Abstract Ämnesord
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  • Solar energy is the foremost power source of our planet. Driving photosynthesis on our planet for 3 billion years the energy stored in the form of fossil fuels also originates from the sun. Consumption of fossil fuels to generate energy is accompanied with CO2 emission which affects the earth's climate in a serious manner.Therefore, alternative ways of converting energy have to be found. Solar cells convert sunlight directly into electricity and are therefore an important technology for future electricity generation.In this work solar cells based on the inorganic semiconductor titanium dioxide and hole-transporting dyes are investigated. These type of solar cells are categorized as hybrid solar cells and are conceptually related to both dye-sensitized solar cells and organic solar cells. Light absorption in the bulk of the hole-transporting dye layer leads to the formation of excitons that can be harvested at the organic/inorganic interface. Two design approaches were investigated: 1) utilizing a multilayer of a hole-transporting dye and 2) utilizing a hole-transporting dye as light harvesting antenna to another dye which is bound to the titanium dioxide surface. Using a multiple dye layer in titanium dioxide/hole transporting dye devices, leads to an improved device performance as light harvested in the consecutive dye layers can contribute to the photocurrent. In devices using both an inteface-bound dye and a hole-transporting dye, excitation energy can be transferred from the hole-transporting dye to the interface dye. 

Ämnesord

NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)

Nyckelord

hybrid solar cells
energy transfer
dye-sensitized solar cells
TiO2
small-molecular semiconductor
hole-transporting dye
Chemistry with specialization in Physical Chemistry
Kemi med inriktning mot fysikalisk kemi

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Unger, Eva
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NATURVETENSKAP
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Uppsala universitet

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