Ayşe Seyhan

As an Associate Professor at Niğde Ömer Halisdemir University, my research is focused on solid-state physics and its applications in advanced materials for energy, especially solar cells and nanotechnology. My research areas include the development and characterization of high-efficiency solar cells, such as Silicon Heterojunction (SHJ), tandem, and thin-film solar cells, along with studies on transparent conductive oxides.

As the Director of the Nanotechnology Application and Research Center at Niğde Ömer Halisdemir University since 2016, I oversee a facility actively engaged in cutting-edge research in various types of solar cells, including SHJ and tandem solar cells, as well as Thermal Energy Storage. Our comprehensive facilities include a clean room and advanced fabrication and synthesis systems such as PECVD (Plasma-Enhanced Chemical Vapor Deposition), PVD (Physical Vapor Deposition), spin coaters, lithography and CZ Silicon Growth system (industrial size). For in-depth material and device characterization, the center is equipped with a wide array of analytical tools, including SEM (Scanning Electron Microscopy), XRD (X-ray Diffraction), XRF (X-ray Fluorescence), AFM (Atomic Force Microscopy), and Raman Spectroscopy. Further analysis is supported by an ellipsometer, FTIR (Fourier-Transform Infrared Spectroscopy), and UV-VIS Spectroscopy. To evaluate device performance and material properties, we utilize specialized equipment such as a Sun simulator, EL & PL (Electroluminescence & Photoluminescence) for solar cells, lifetime and Hall effect measurement systems, a four-point probe, DSC (Differential Scanning Calorimetry), and thermal conductivity measurement tools.