鎳摻雜氧化鋅奈米柱陣列與鋰鹽摻雜聚(3-己基噻吩)層做為電荷收集層以提升鈣鈦礦太陽能電池 之元件效率

Abstract

本研究中提出以鎳摻雜氧化鋅奈米柱陣列和鋰鹽摻雜的聚噻吩做為電荷收集層之新穎正結構鈣鈦礦太陽能電池。採用水熱法在ITO基板上製備垂直成長的鎳摻雜氧化鋅奈米柱以提供電子傳導路徑。[6,6]-苯基-碳六十一-丁酸甲酯(PCBM)引入鎳摻雜氧化鋅奈米柱陣列和鈣鈦礦層之間以提升電子萃取能力。同時聚(3-己基噻吩)摻雜雙(三氟甲烷磺酰)亞胺鋰(Li-TFSI)做為電洞傳輸層。三種鈣鈦礦材料包含MAPbI3、(MA)x(FA)1-xPbI3及(MA)y(GA)1-yPbI3做為光捕獲層以提升光伏元件之轉換效率。優化之鈣鈦礦太陽能電池結構為ITO/Ni-doped ZnO nanorods/PCBM/(MA)y(GA)1-yPbI3/P3HT+Li-TFSI/Au，顯示開路電壓為0.83 V，短路電流密度為23.73 mA/cm2，填充因子為70%，功率轉換效率為13.79%。

In this study, novel regular-type perovskite solar cells based on Ni-doped ZnO nanorod arrays and Li-salt doped P3HT for solar energy harvesting were proposed. Ni-doped ZnO nanorods were vertically grown on the ITO substrates via the hydrothermal method to provide electron transporting paths. PCBM was introduced between Ni-doped ZnO nanorod arrays and the perovskite layer to improve electron extraction. Meanwhile, P3HT doped with bis(trifluoromethane)sulfonimide lithium salt (Li-TFSI) was used as hole transporting layer. Three types of perovskite materials, including MAPbI3, (MA)x(FA)1-xPbI3, and (MA)y(GA)1-yPbI3, were used as light harvesting layers to improve conversion efficiency of photovoltaic devices. The optimized perovskite solar cell with the configuration of ITO/Ni-doped ZnO nanorods/PCBM/(MA)y(GA)1-yPbI3/P3HT+Li-TFSI/Au revealed an open- circuit voltage of 0.83 V, a short-circuit current density of 23.73 mA/cm2, a fill factor of 70%, and a power conversion efficiency of 13.79%.