鈣鈦礦成核與結晶之調控及其於光伏電池之研究

在過去十年中，鈣鈦礦吸光材料的發展受到了許多的關注。常用的鈣鈦礦吸光材料分為有機和無機材料，本篇論文的鈣鈦礦 (CH3NH3PbI3)薄膜主要始用低溫溶液製程，並使用穿透光譜、光激螢光光譜、X光繞射光譜和原子力顯微鏡圖像來分析太陽能電池中的主動層。本論文採用之太陽能電池的結構為Ag/PC61BM/CH3NH3PbI3/PEDOT:PSS/ITO/Glass；其中100 nm厚的銀和170 nm厚的ITO薄膜分別為陰極與陽極，50 nm厚的PC61BM和70 nm厚的PEDOT:PSS分別為電子傳輸層與電洞傳輸層，並通過一步驟旋塗製程和搭配沖洗增強成核(Washing-Enhanced Nucleation, WEN)製程來製做CH3NH3PbI3薄膜。本實驗的結果顯示了當PCBM和Perovskite的界面接觸不佳時會造成J-V曲線中出現S-shape，這也導致了填充因子 (F.F.)的降低。通過增加CH3NH3PbI3薄膜的表面粗糙度可以改善疏水性的PCBM和親水性的CH3NH3PbI3界面接觸性，這結果可以得到11.5％的功率轉換效率。

關鍵字

S-shape J-V曲線；結晶性；表面接觸；鈣鈦礦太陽能電池

並列摘要

Since people have been actively developing and applying energy to the present day, we have more and more things that cannot be separated from energy. Whether it is agriculture or aquaculture, we need a variety of energy sources to back it, but today's major energy developments, such as the massive use of oil or gas, can cause cumulative pollution in our environment., while secondary energy sources such as wind or water are unstable or the power supply area is not widespread, so we have begun to develop. Solar-related energy. In the past ten years, the development of solar cells has been dominated by perovskite light-absorbing materials. Perovskite is a crystal structure. The commonly used perovskite light-absorbing materials are composed of organic-inorganic materials. My experimental direction is to make a low-temperature solution process. Perovskite thin film solar cells, and will use electron microscopy, Raman spectroscopy, fluorescence spectroscopy and absorption spectroscopy to analyze the characteristics of the active layer in solar cells and find ways to improve their interface. The structure of the solar cell components in this report is Ag/ PC61BM/CH3NH3¬PbI3/PEDOT:PSS/ITO/Glass, Ag and ITO are used as the cathode and anode of the battery, and PC61BM is used as the electron transfer layer of the battery, PEFOT:PSS As the hole transfer layer of the battery, the middle CH3NH3¬PbI3 is the active layer responsible for absorbing sunlight, and the active layer, the electron transport layer and the hole transfer layer are all made by the spin coating method, and the Ag electrode is fabricated. The vacuum thermal evaporation method is used. Under the optimized process parameters, the highest power conversion efficiency (PCE) is 11.5%, the open circuit voltage (Voc) is 0.87 V, and the short circuit current ( Jsc) is 21.9 mA/ cm2 and the fill factor (FF) is 53.5%.