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Photoelectrical properties of photovoltaic structures based on CdTe/ZnO

  Photovoltaics continues to be one of the fastest growing industries, with annual increase beyond 40% [1]. Photovoltaic (PV) solar cells convert incoming solar radiation directly into electricity and produce electricity as each conventional source of energy, but they are very attractive for they are environment friendly. Zinc oxide (ZnO) is nowadays worldwide extensively studied for optoelectronics and photovoltaics application. It is predicted that there will be a mass production of conducting ZnO layers as transparent electrodes in solar cells. It is said that ZnO layers will soon replace indium transparent oxide (ITO) because of high cost and limited supply of indium. Yet there is another very attractive field of ZnO application. It may be used as the n-type partner for the organic materials. There is a bright future in front of the PV cells based on such a hybrid structures for their flexibility and a very low cost of production. The use of ZnO in the novel electronic and PV devices demands low or extremely low processing temperature [2-4]. There are many different technologies used to obtain ZnO layers. These are chemical vapor deposition (CVD), molecular [...]

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