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Synopsis
In current organic photovoltaic devices, the loss in energy caused by the inevitable charge transfer step leads to a low open circuit voltage, which is one of the main reasons for rather low power conversion efficiencies. A possible approach to increase the voltage is to lower the exciton binding energy, which can be accomplished by materials with a higher dielectric constant. It is shown how to calculate the dielectric constant with ionic and electronic contributions and how to obtain the exciton binding energy by using the density functional theory framework. We obtain a lower limit of the exciton binding energy for different commonly used one dimensional molecules, and an improved dielectric constant for a ladder polymer with polar side-chains. Different arrangements of a donor and an acceptor molecules are discussed in terms of the exciton binding energy of the respective charge transfer state. It is shown that a spatial separation between the donor and acceptor molecule can lower the exciton binding energy by a factor of two.
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Improved materials and electronic properties of organic solar cells
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Südwestdeutscher Verlag Für Hochschulschriften Sep 2017, 2017
ISBN 10: 6202320249
ISBN 13: 9786202320245
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Taschenbuch
Seller: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Germany
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Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In current organic photovoltaic devices, the loss in energy caused by the inevitable charge transfer step leads to a low open circuit voltage, which is one of the main reasons for rather low power conversion efficiencies. A possible approach to increase the voltage is to lower the exciton binding energy, which can be accomplished by materials with a higher dielectric constant. It is shown how to calculate the dielectric constant with ionic and electronic contributions and how to obtain the exciton binding energy by using the density functional theory framework. We obtain a lower limit of the exciton binding energy for different commonly used one dimensional molecules, and an improved dielectric constant for a ladder polymer with polar side-chains. Different arrangements of a donor and an acceptor molecules are discussed in terms of the exciton binding energy of the respective charge transfer state. It is shown that a spatial separation between the donor and acceptor molecule can lower the exciton binding energy by a factor of two. 152 pp. Englisch. Seller Inventory # 9786202320245
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Improved materials and electronic properties of organic solar cells
Published by
Südwestdeutscher Verlag für Hochschulschriften, 2017
ISBN 10: 6202320249
ISBN 13: 9786202320245
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Seller: moluna, Greven, Germany
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Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Kraner StefanDr. Stefan Kraner studied Electronic Engineering and Micro- and Nanotechnology in Switzerland and Austria, respectively. He conducted his Masterthesis under supervision of Prof. Sariciftci and his PhD in the group of Pro. Seller Inventory # 174172222
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Improved materials and electronic properties of organic solar cells
Published by
Südwestdeutscher Verlag Für Hochschulschriften, 2017
ISBN 10: 6202320249
ISBN 13: 9786202320245
New
Taschenbuch
Seller: AHA-BUCH GmbH, Einbeck, Germany
Seller rating 5 out of 5 stars
Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - In current organic photovoltaic devices, the loss in energy caused by the inevitable charge transfer step leads to a low open circuit voltage, which is one of the main reasons for rather low power conversion efficiencies. A possible approach to increase the voltage is to lower the exciton binding energy, which can be accomplished by materials with a higher dielectric constant. It is shown how to calculate the dielectric constant with ionic and electronic contributions and how to obtain the exciton binding energy by using the density functional theory framework. We obtain a lower limit of the exciton binding energy for different commonly used one dimensional molecules, and an improved dielectric constant for a ladder polymer with polar side-chains. Different arrangements of a donor and an acceptor molecules are discussed in terms of the exciton binding energy of the respective charge transfer state. It is shown that a spatial separation between the donor and acceptor molecule can lower the exciton binding energy by a factor of two. Seller Inventory # 9786202320245
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Improved materials and electronic properties of organic solar cells
Published by
Südwestdeutscher Verlag für Hochschulschriften, 2019
ISBN 10: 6202320249
ISBN 13: 9786202320245
New
Taschenbuch
Seller: preigu, Osnabrück, Germany
Seller rating 5 out of 5 stars
Taschenbuch. Condition: Neu. Improved materials and electronic properties of organic solar cells | Stefan Kraner | Taschenbuch | 152 S. | Englisch | 2019 | Südwestdeutscher Verlag für Hochschulschriften | EAN 9786202320245 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu. Seller Inventory # 113380072
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Improved materials and electronic properties of organic solar cells
Published by
Südwestdeutscher Verlag Für Hochschulschriften Sep 2017, 2017
ISBN 10: 6202320249
ISBN 13: 9786202320245
New
Taschenbuch
Seller: buchversandmimpf2000, Emtmannsberg, BAYE, Germany
Seller rating 5 out of 5 stars
Taschenbuch. Condition: Neu. This item is printed on demand - Print on Demand Titel. Neuware -In current organic photovoltaic devices, the loss in energy caused by the inevitable charge transfer step leads to a low open circuit voltage, which is one of the main reasons for rather low power conversion efficiencies. A possible approach to increase the voltage is to lower the exciton binding energy, which can be accomplished by materials with a higher dielectric constant. It is shown how to calculate the dielectric constant with ionic and electronic contributions and how to obtain the exciton binding energy by using the density functional theory framework. We obtain a lower limit of the exciton binding energy for different commonly used one dimensional molecules, and an improved dielectric constant for a ladder polymer with polar side-chains. Different arrangements of a donor and an acceptor molecules are discussed in terms of the exciton binding energy of the respective charge transfer state. It is shown that a spatial separation between the donor and acceptor molecule can lower the exciton binding energy by a factor of two.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 152 pp. Englisch. Seller Inventory # 9786202320245