Production and application of n- and p-type Si wafer using CVD method

Necessity for electricity is one of the most significant issues of present time. Rapid consume of most used underground resources made it necessary for researching the new kind of energy sources. After the increase of daily requirements and quality necessities, innovations in electric production technologies gained importance. Production of electricity from the sun is based on the principal of contacting the two sides of a semiconductor stimulated by sun and the returning of electrons which have been sent to conductivity level to their initiation locations after completing the entire circuit. Materials science which is a multidisciplinary branch could be defined as investigation and development of proper tools for providing sources for humanity. In this respect, in the scale of current thesis, production of solar cells for renewable energy obtainment using modified semiconductor silicon wafers was aimed and studied. Single crystal structured crystal wafers with semi-conductive character were modified and the stimulation of material with sun light was achieved. In order to enlighten the structures of the produced solar cells, SEM, XRD, XPS, UV-vis and profilometer calculations were carried out. In addition of structural analysis, electrical properties of the produced cells were determined. There are many remarkable factors in current study in order to benefit fully from the sunlight. By texturation, refraction of photons interacted with surface was prevented opposite to the angle they interacted. Optimum realization studies of electron-hole separation were achieved with diffusion time determination. With utilization of reflection blocker coating, absorption of rays interacted with the surface of solar cells was provided. In addition to the scientific results, with the support of İZ-KA to the current study, more attention to renewable energy in Dokuz Eylül University was gained. Thanks to the energy stations in university in scope of current project, charging the batteries of electrical devices was realized.