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A POLE DISCOVERED AS A CHEAP PRODUCTION OF PHOTOVOLTAIC MATERIAL Perowskity is an invention of graphene. Pole Olga Malinkiewicz has discovered how to cheaply produce this photovoltaic material. It will be soon possible to obtain cheap energy from the sun. This polish woman is the author of one of those ideas. Malinkewicz proposes that crystals, which produce energy should be hidden in ink, and it can be printed on each surface. Perowskity is a mineral existing in the nature, but it can be also produced. In the sun water sit would replace the popular silicon, which ultimately results in more expensive than the perovskite. What is more interesting in this method is the fact that the material can be spread on any surface. It may be plastic or paper and maintain high cell efficiency. It is not possible to apply silicon to flexible materials. If the perovskity material would be sufficiently durable, it would depend only on the imagination of people how they would deal with mass production. It could be houses, cars, skyscraper windows or clothing. Layer only 200-300 nm thick. Łukasz Stala, I TA,Marcelina Domoń ITc 41