| Abstract [eng] |
Global climate change and greenhouse gas emissions are widely recognized problems. Developed countries are looking for ways to deliver electricity which would be carbon neutral, environmentally friendly and renewable. Another reason why the development of renewable energy resources in Lithuania is important is a need to reduce the country’s dependency on imported fuel. The development of renewable energy sources has been growing in recent years. At the moment, the leading options of renewable energy sources are: wind, geothermal, marine and solar. Solar cells are one of the most prominent and promising energy technologies today. It is sustainable, renewable, clean, completely noise-free, scalable, requires minimal amount of maintenance and produces zero emissions. Moreover, energy obtained using solar cells is easy to distribute and allows to skip expensive grid infrastructure. The sun is considered as the most abundant source of energy in existence. The formation of semi-conductive chalcogenide layers on different substrates has been intensively studied over the last years. The development of new materials and optimization properties of the known selenide precursors, including selenopolythionates, are of great importance to obtaining layers with the optimal properties. The ternary compound (I–III–VI2) semi-conductor CuInSe2 is one of the leading materials for large-scale solar applications. It has a direct band gap, a high absorption coefficient, stability against photodegradation and good thermal stability. Copper selenide is a semi-conducting material, which exhibits electrical and optical properties suitable for photovoltaic application. This thesis is related to the search of new effective methods to obtain copper and indium selenide layers. Copper and indium selenide layers were obtained on glass using a low cost, simple successive ionic layer adsorption and reaction (SILAR) method. This method produces homogeneous layers and allows for easy scalability for large surface area coatings. |
