Name: Improved materials and electronic properties of organic solar cells (en Inglés)
Price: 262537.00 COP
Availability: InStock
Author: Kraner, Stefan
ISBN: 9786202320245

portada Improved materials and electronic properties of organic solar cells (en Inglés)

Improved materials and electronic properties of organic solar cells (en Inglés)

Formato

Libro Físico

Autor

Stefan Kraner

Editorial

Sudwestdeutscher Verlag Fur Hochschulschrifte

Idioma

Inglés

N° páginas

152

Encuadernación

Tapa Blanda

Dimensiones

22.9 x 15.2 x 0.9 cm

Peso

0.23 kg.

ISBN13

9786202320245

Categorías

Química física

Improved materials and electronic properties of organic solar cells (en Inglés)

Stefan Kraner (Autor) · Sudwestdeutscher Verlag Fur Hochschulschrifte · Tapa Blanda

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Reseña del libro "Improved materials and electronic properties of organic solar cells (en Inglés)"

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.