Miraculous graphene material easy and inexpensive to produce, but to use it in production very difficult. The thickness of the graphene sheet less than a nanometer. When separated from the mother substrate, the graphene sheet is torn, rumpled or damaged in any other way. Researchers from MIT have found a way to avoid damage to the graphene sheets of large area production. In the end, this can lead to the emergence of ultra-light solar cells or displays.
A new production process, which was developed at the Massachusetts Institute of technology and promises to be relatively easily scalable for industrial production, involves the creation of an intermediate buffer layer material. This buffer layer was the key to success, which can help in commercialization of the development.
Traditionally, graphene is created in the process of vacuum vapour deposition (CVD). The material is deposited on the copper substrate with which it is then essential to raise. In order to remove a thin layer of graphene from a copper basis, scientists have proposed to strengthen the buffer layer of polymer such as parylene. Atomic structure of parylene is largely similar to the atomic structure of graphene and the material fits well on the other what is happening in some sort of doping graphene with parylene.
Experiments have shown that parylene effectively strengthens the graphene, and it eliminates the discontinuities and large deformation of graphene sheets when removed from the copper substrate. Moreover, the proposed fabrication process and experimental setup proved that the process of laminating the graphene on a substrate and subsequent operation of gelatinization and separation of graphene from the copper base can be performed in a pipelined manner in the processing of graphene in rolls, and it greatly accelerates the production of the material.
Now that it gives. You’ve probably heard that today for the manufacture of transparent electrodes in displays, solar panels and light emitting devices used compound of indium oxide and tin (ITO). Transparent and reinforced parylene graphene electrodes to replace ITO electrodes. This will provide savings in weight and material (cost) and show the effect in terms of the best ratio of energy produced to the weight of the item.
So, created in the MIT prototype solar cell with transparent electrodes made of graphene and showed parylene layer transparency to about 90% for visible light and a 36-fold improvement in the ratio of energy produced to the weight of the item (and it is ultralight solar panels) when using 1/200 of the material from usually required for panels volume.