From 29 March to 1 April 2012 I had the pleasure to participate in the III Symposium on Photovoltaic and Transparent Electronics - Perspectives of Development. At the Symposium I have presented the speech entitled "Chemical texturisation of crystalline silicon surface in solution based on HF and HNO3 and its influence on functional parameters of solar cells." Subject matter was awarded by its publication in the technical journal Elektronika, and same speach awarded second prize by the Scientific Committee of the Symposium.