The GEP laureates tour continues, Professor Graetzel told about his development at the conference in South Korea
Today, the laureate of the Global Energy Prize - Michael Graetzel spoke about the benefits of "alternative sources of solar energy" at the opening of the 15th Nanotech & Nano-Convergence Expo International Symposium (NANO KOREA 2017) during the Global Energy Prize laureates’ tour. The event was held at the KINTEX, the city of Ilsan in South Korea.
NANO KOREA 2017 is the largest symposium in Korea on nanoscale science and technology, which is a significant platform for the approval of the main results of scientific research and modern research trends in Korea and abroad, as well as for the exchange of experience between researchers from relevant fields. With his appearance at the event in Korea, Professor Graetzel opened a new round of the Global Energy Prize laureates' tour. This month, the tour will take place in South Korea, China, Saudi Arabia and Singapore.
In his speech the scientist mentioned that his invention - the "Graetzel cells" could come to replace the expensive and complex technologies of the photovoltaic solar cells that we now have, which are based on silicon. This is due to the fact that for the production of silicon batteries requires high purity silicon, which is not a cheap raw material. In comparison with silicon batteries, the "Graetzel cells" are relatively simple in the device and are made of inexpensive materials.
Despite the fact that Michael Graetzel argues that his development is not an opponent for the long-established firm position of the silicon in a market, facts speak for themselves. The technology of the scientist is much more convenient, because with her batteries can be made flexible, transparent, colored, and they collect sunlight both in twilight and in bad weather. They can be installed on walls, they protect the structure and at the same time produce light. Small flexible panels are placed on backpacks to charge phones. Transparent cells are able to generate electricity at various frequency ranges of the light flux, up to infrared. This means that these elements can be built into the window panes, combine the generation of electricity and cooling of premises.
Recall that "Graetzel cells" mimic the natural process, like a plant, and recycle light. But, unlike plants, not in carbohydrates, but in watts. "It's easy to tell, but it's not easy to repeat, recreate! Many scientists tried, and I'm among them. Molecules are placed on some substrate, on some surface, on which light enters. You can capture this energy, but it's very difficult to convert it into electricity," the scientist explains.