Organic solar cells

Organic solar cells

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It is possible to elaborate solar cells more efficient and more economic. Research in the sector photovoltaic large fruit is ripening and the in-depth study of fullerene could represent the keystone for the diffusion of organic solar cells. Organic-based solar cells are nothing new but the big limitation of this innovation lies in its basic constituent, the fullerene, too expensive for mass release. Deepen the knowledge of the fullerene allowed chemists to develop alternatives to low cost.

The organic solar cells they were first developed about 20 years ago. Several improvements have been made to date and the latest findings from the University of Warwick could be decisive. The team of researchers from the University of Warwick, England, has highlighted an important feature of the fullerene. The fullerene, in the organic solar cells, behaves as an electron acceptor, the British team states that it is possible to replicate this and other characteristics of fullerene based on the structure highlighted.

Previous attempts to replace the fullerene with other materials they failed precisely because the tested components could not behave from additional acceptor. Fullerene can "to catch" electrons in a great variety of states of excetation so as to always guarantee the optimal speed and have an ideal charge separation process.

The Warwick scientists demonstrated how a new molecular class of electronic acceptors can be easily synthesized in the laboratory. Having understood the structure that allows the fullerene to operate as an electron acceptor means to have laid the foundations for developing, in concrete terms, more accessible substituents.

Scientists have already filed a patent application and are ready to work with business partners to launch on the market organic solar cells of the new generation. The research was described in detail in the study published in the trade journal "Advanced Materials“.

Video: Fabrication of organic solar cells with thickness gradients (June 2022).