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SMOLAC SIGNED

Theoretical design of non-fullerene small molecule acceptors for organic solar cells with improved efficiency.

Total Cost €

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EC-Contrib. €

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Partnership

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Project "SMOLAC" data sheet

The following table provides information about the project.

Coordinator
MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV 

Organization address
address: HOFGARTENSTRASSE 8
city: MUENCHEN
postcode: 80539
website: n.a.

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Total cost 174˙806 €
 EC max contribution 174˙806 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2018
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2019
 Duration (year-month-day) from 2019-12-01   to  2022-01-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV DE (MUENCHEN) coordinator 174˙806.00

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 Project objective

Organic solar cells are lightweight, mechanically flexible and potentially printable devices. To split an exciton, these cells use a mixture of electron donor and acceptor materials. At present, most of the electron acceptors are made up of fullerenes or their derivatives. However, fullerenes exhibit only weak light absorption in the visible spectrum. Hence, practically half of the active material in the solar cell does not collect light and thus does not contribute to exciton and charge generation, thereby limiting the maximum efficiency of organic solar cells to 12%. Recent experimental and theoretical works show that it is possible to improve this low efficiency by replacing fullerene acceptors with small molecules (strong dyes). These strong dyes can change the energy profile of the donor-acceptor interface in a way that improves the solar cell behavior by causing it to favor more efficient charge-transferred state splitting. The mechanism by which the efficiency is improved is complex and not well-understood and is mediated by the strong dye’s ability to alter the electrostatic forces felt by generated excitons. However, a rational approach to design such non-fullerene acceptors on a molecular level, accounting for the complex electrostatic interactions, has not been developed. In-depth molecular level understanding of donor-(non-fullerene) acceptor interfaces, including long-range electrostatic effects, is the first goal of this proposal. It will include simulations of morphologies and evaluation of electrostatic forces at donor-non-fullerene acceptor interfaces for several experimentally well-characterized systems. The second step will include the design of a pre-screening workflow for new acceptors, focusing on the optimization of the efficiency of the charge-transferred state splitting and minimization of the open circuit voltage losses.

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The information about "SMOLAC" are provided by the European Opendata Portal: CORDIS opendata.

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