Preparation of Highly Efficient Solar Cells and Corrosion Studies on Solar Cell Materials

摘要

The application of the Pourbaix diagram to the prediction and understanding of corrosion properties of semiconductor materials has been worked out. With the aid of flat band potential information, the thermodynamic stability of semiconductor materials under various operating conditions, types of electrodes (n- or p-) to be used, conversion efficiencies, types of redox couples to be chosen for a given semiconductor electrode material and the proper operating pH-region can be determined. pH and electrolyte dependencies of flat band potentials have been studied to be able to design more efficient semiconductor-liquid junction solar cells. Various effects of electrolytes on flat band potentials were also studied.