123rd General Meeting of the KCS

Type Poster Presentation
Area Electrochemistry
Room No. Exhibition Hall 2
Time 4월 18일 (목요일) 11:00~12:30
Code ELEC.P-444
Subject A comparative study of ZnS film fabricated by CBD and ALD
Authors Yu-Beom Yeon, Jungho Choe1, Chi-Woo Lee*
Department of Advanced Materials Chemistry, Korea University, Korea
1Control and Instrumentation Engineering, Korea University Sejong Campus, Korea
Abstract Solar energy is a renewable energy source. This means that we cannot run out of solar energy, as opposed to non-renewable energy sources (e.g. fossil fuels, coal and nuclear). The potential of solar energy is beyond imagination. The surface of the earth receives 120,000 terawatts of solar radiation (sunlight) – 20,000 times more power than what is needed to supply the entire world. CdS and ZnS have large band gap energy. (CdS : 2.4eV, ZnS : 3.7eV) Because of this feature, it can serve as a buffer layer in the cell and is useful in solar cells. The electrodeposition method is a method of forming a thin film by dissolving a component material in a supporting electrolyte solution and then using an electrochemical oxidation / reduction reaction. The advantage of the electrochemical method is that it has less waste of raw materials, minimizes the generation of wastewater, and is more easily tailored to the reaction conditions than other methods. The CBD (Chemical Bath Deposition) method is advantageous in that the manufacturing process is relatively simple as compared with other methods, the manufacturing cost is low, and the reproducibility is excellent. In this study, ZnS was electrodeposited on FTO Glass by ALD (Atomic Layer Deposition) and CBD (Chemical Bath Deposition) method. Electrochemical electrodeposition was performed using PGSTAT302N from Echem-Technology, and the layer was increased using AECS(Automatic Chemical Experiment Sysyem). ZnS thin films were analyzed by XRD (X-ray Diffraction), SEM (Scanning Electron Microscope) and EDS (Energy Dispersive Spectroscopy).
E-mail wingsum@korea.ac.kr