- 學位論文
奈米銀線作為透明電極應用於半透明鈣鈦礦太陽能電池之高溶劑塗佈法的技術開發
Development of Silver Nanowire as Top Electrode of Bifacial Perovskite Solar Cells by High-Solvent Coating Method
摘要
鈣鈦礦太陽能電池由於其製程簡單且效率高的優勢使得越來越多人投入研究，而為了讓太陽能電池對於太陽光的運用有更多的提升，擁有相近轉換效率且能透光的半透明鈣鈦礦電池持續受到矚目，尤其是與矽基太陽能電池堆疊形成疊層鈣鈦礦電池以形成更高的轉換效率。 奈米銀線具有良好的導電性質，且在可見光區與紅外光區都有著很高的穿透率，應用於鈣鈦礦太陽能電池上作為透明電極為相當適合的選擇。本研究選擇高溶劑含量的旋塗製程來沉積奈米銀線於鈣鈦礦上，形成半透明的鈣鈦礦太陽能電池。然而在過程中發現使用銀線溶液進行沉積時，會有溶劑(IPA)侵蝕鈣鈦礦的現象發生，因此我們嘗試將不同的修飾材料如PEI或TBAOH加入於奈米銀線溶液中，降低溶液對於鈣鈦礦的溶解度，形成銀線混和液直接旋塗於鈣鈦礦上，能有效減少溶劑侵蝕鈣鈦礦的情況發生，並讓銀線電極與鈣鈦礦形成良好的電性接觸，最終成功完成高效率的半透明鈣鈦礦電池製造，得到12.85 %的元件轉換效率並擁有穩定的製程可靠性，同時達成高溶劑銀線沉積技術應用在鈣鈦礦上電極的目標。
並列摘要
Perovskite solar cells (PSCs) have attracted many research efforts because of their high efficiency. Developing bifacial perovskite solar cells for the tandem structure of silicon solar cells and perovskite solar cells need to be transparent. Silver nanowires (AgNWs) with good electrical conductivity and high transmittance in the visible and infrared regions are a choice of suitable transparent conductive electrodes. This study aimed to deposit AgNWs on the perovskite by spin-coating processes to form a transparent electrode. However, AgNWs failed to form a good electrical contact with the absorber layer due to damage to the perovskite layer by the solvent (IPA) that contains AgNWs. By adding modifications such as PEI or TBAOH to the AgNWs solution and directly spin-coating on the perovskite, the damage can be minimized. In the meantime, achieve the effect of modifying the AgNWs so that the AgNWs electrode has formed a good contact with the perovskite layer. Finally, a high-efficiency AgNWs transparent perovskite solar cell was completed by a spin-coating process with a high-solvent content, the best device conversion efficiency of 12.85 % was obtained. We achieve the goal of fabricating perovskite solar cells with the AgNWs deposition technique of high-solvent process and confirmed the manufacturing process has stable reliability.