DSSC Dye with push-pull structure & improved NIR absorption
Référence
08133-01
Statut des brevets
European priority patent application filed on July 28th, 2015 and entitled “trans-disubstituted benzodiazaporphyrins as sensitizers for solar cells”
Inventeurs
Fabrice ODOBEL,
Andrey V. CHEPRAKOV
Dmitry S. ANDRIANOV
Statut commercial
Exclusive or non-exclusive license
Laboratoire
Chimie et interdisciplinarité: Synthèse, Analyse, Modélisation (CEISAM, UMR6230), Nantes, France.
Lomonosov Moscow State University (MSU), Russia
Description
CONTEXT
This invention is related to the field of Dye-Sensitized Solar Cells (DSSC). It concerns the use of a novel dye.
The CEISAM Laboratory (UMR CNRS 6230) has developed this new benzodiazaporphyrin-based dye structure, in collaboration with the Lomonosov Moscow State University.
TECHNICAL DESCRIPTION
The developed dye is a modified Zn (di-substituted) trans-benzodiazaporphyrin. This structure allows combining the push-pull structure of porphyrins with a strong light absorption in the NIR region (around 670 nm) usually exhibited by phtalocyanines. The patent also describes the complete synthesis route for two alternatives of the molecule. The new dye has the following normalized absorbance spectrum :
A DSSC device comprising the new dye on TiO2 exhibits the following IPCE spectrum:
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DEVELOPMENT STAGE
Lab-scale, functional DSSC devices were successfully obtained (PCE = 3.45%) with the current structure. New dye structures are currently being investigated, with an improved push-pull behavior.
BENEFITS
· Strong absorption in the NIR region.
· Push-pull system: efficient charge transfer.
· Zn-based complex: more abundant than Ru, which is used in standard dyes.
INDUSTRIAL APPLICATIONS
This invention can be used as a dye for DSSC solar cells.
For further information, please contact us (Ref 08133-01)