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標題: | 開發與優化應用於鈣鈦礦太陽能電池之奈米銀線前電極的保護層 Development and Optimization of Buffer Layer on Silver Nanowires Front Electrode for Perovskite Solar Cells |
作者: | 陳冠維 Kuan-Wei Chen |
指導教授: | 許麗 Li Xu |
關鍵字: | 鈣鈦礦太陽能電池,奈米銀線,噴射式大氣電漿系統,保護層,摻雜鎵的氧化鋅,雷射焊接技術, Perovskite Solar Cells,Silver Nanowires,Atmospheric Pressure Plasma Jet System,Buffer Layer,Gallium-doped Zinc Oxide,Laser Nano-welding Technology, |
出版年 : | 2023 |
學位: | 碩士 |
摘要: | 鈣鈦礦太陽能電池(perovskite solar cell, PSC)因其高光電轉換效率和低成本製程,成為近些年倍受矚目的研究領域。其中,尋找取代傳統透明氧化物(transparent conductive oxide, TCO)電極的材料也是研究的一大方向。奈米銀線(AgNWs)膜因為具高導電率、透明性、易於製備且可製作在柔性基材等優勢,是極具潛力的替代電極材料。然而,鈣鈦礦材料中的鹵素陰離子,會與銀離子進行化學反應,形成不導電的鹵化物,而大大降低鈣鈦礦太陽能電池的光電轉換效率,故需要有保護層添加至元件結構中,以抑制鹵化物的形成。本研究嘗試不同製備保護層的方式,並成功以噴射式大氣電漿系統(atmospheric pressure plasma jet, APPJ)沉積摻雜鎵的氧化鋅(GZO)薄膜作為保護層,且透過電漿頭掃描速度之變化,進行GZO薄膜厚度的調整,成功製作出以AgNWs為前電極的鈣鈦礦太陽能電池,且驗證了不同厚度之GZO對鈣鈦礦材料長晶影響不大。另外,結合連續波雷射焊接技術應用於AgNWs膜,提高了AgNWs的電性,並降低AgNWs膜的粗糙度。經過雷射焊接技術的應用,成功使鈣鈦礦太陽能電池的開路電壓(VOC )與短路電流(JSC)之積平均相對提升了3.3%、填充因子(FF)平均相對提升了8.9%,光電轉換效率(PCE)增加了1%,最高達9.2%。 Perovskite solar cells have attracted significant research attention in the recent years owing to their high efficiency and low fabrication cost. Finding alternative materials to replace traditional transparent conductive oxide (TCO) electrodes is one of the research interests. Among these alternatives, silver nanowires (AgNWs) films have gained popularity for their high conductivity, transparency, ease of fabrication, and compatibility with flexible substrates. However, halide anions present in perovskite materials can chemically react with silver ions, forming non-conductive halides. Therefore, a buffer layer needs to be incorporated into the device structure. In this study, we focuses on the development of buffer layer and successfully utilizes a Ga-doped zinc oxide (GZO) film deposited by an atmospheric pressure plasma jet (APPJ) system. The thickness of the GZO film is adjusted by varying the scanning speed of the plasma head. Perovskite solar cells with AgNWs as front electrodes are fabricated, and optimal thickness is acquired to be an effective barrier without increasing much of electric resistance. Additionally, continuous wave laser nano-welding technology was employed to optimize the electrical properties and surface roughness of AgNW films. Through the application of laser nano-welding technology, the product of open-circuit voltage (VOC) and short-circuit current (JSC) of the perovskite solar cells have been increased by an average of 3.3% relatively, the fill factor (FF) has increased by an average of 8.9% relatively, and the power conversion efficiency (PCE) has improved by 1% absolutely, reaching a maximum of 9.2%. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/92486 |
DOI: | 10.6342/NTU202304458 |
全文授權: | 同意授權(全球公開) |
顯示於系所單位: | 機械工程學系 |
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