New diketopyrrolopyrrole derivatives for organic photovoltaics

abstract

English

Nowadays, strong effort has been put on searching for the new materials to use in low cost organic electronics. Compared to polymers, small molecules show many advantages as higher possibility of supramolecular organization, higher purity and easier production. Diketopyrrolopyrrole based small molecules are high performance materials, originally used in dye industry, recently successfully used in organic electronics and photovoltaics as well. Up to now our group synthesised various diketopyrrolopyrrole derivatives and studied them with respect to their structure-property relationship. As a result of previous study and theoretical calculations, we have synthesised group of four new highly soluble, diphenylaminostilbene diketopyrrolopyrrole derivatives and characterised their properties with various optical and electrical methods. All four studied materials showed promising properties with respect to photovoltaics as strong absorption, fluorescence quenching with acceptor, photoconductivity and photogeneration. Differences in photogeneration with respect to the structure of materials were observed. Furthermore, we have prepared functional organic solar cells prototypes based on mentioned materials as the donors and optimized their performance. Studied materials showed to be well working donor materials for organic photovoltaics.

organic photovoltaics, diketopyrrolopyrrole

HONOVÁ, J.; HRABAL, M.; STŘÍTESKÝ, S.; HEINRICHOVÁ, P.; VALA, M.; WEITER, M.

6. 12. 2013

Brno

978-80-214-4822-3

Studentská konference Chemie je život

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