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투명 전극 ITO/Ag/ITO 박막의 광학적 및 전기적 특성 향상 연구
신연배,강동원,김제하,Shin, Yeon Bae,Kang, Dong-Won,Kim, Jeha 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.11
Herein we studied the electrical and optical properties of indium tin oxide ITO/Ag/ITO multilayer thin films for application in transparent conducting electrodes. The ITO and Ag thin films were deposited onto soda lime glass (SLG) using radiofrequency and DC-sputtering methods, respectively. The as-synthesized ITO/Ag/ITO multilayer thin films were analyzed using 4-point probe, UV-Visible spectroscopy, and Hall measurement. We observed a rapid increase in electron concentration with increasing Ag thickness. However, electron mobility decreased with increasing Ag thickness. Finally, ITO/Ag/ITO multilayer thin films showed a characteristic low sheet resistance of $18{\Omega}/sq$ and high optical transmittance value (80%) with variation of Ag thickness (5~10 nm).
신연배(Shin Yeon-Bae),김규광(Kim Gyu-Gwang),조용현(Cho Yong-Hyun),조영호(Cho Young-Ho),양태열(Yang Tae-Youl) 한국태양에너지학회 2023 한국태양에너지학회 논문집 Vol.43 No.6
Adding various colors to photovoltaic (PV) modules is essential for the building-integrated photovoltaics (BIPV) market; however, it can also reduce PV performance and increase manufacturing costs. Therefore, a tool is required to predict PV performance based on color before production of PV modules. In this study, we demonstrate an approach for predicting the performance of colored PV modules before they are produced. First, we analyzed the optical properties of various colors of polyvinyl chloride (PVC) films available in the market and their correlation with power. A total of 15 prediction models were trained. Then, we manufactured colored films for BIPV, predicted their power using the trained models, and compared the predictions with actual power values. Additionally, we validated and optimized the prediction models using mean absolute error (MAE) and root mean squared error (RMSE). We achieved a low MAE of 3.8% and an RMSE of 4.3% using a prediction model formula that consisted of transmittance or a combination of transmittance and absorption. This approach offers several advantages, such as the ability to predict the performance based solely on the optical properties of front-colored films or glass used in colored BIPV without the need for sample production, which can save time and resources.