以堆疊主動層探討提升鈣鈦礦太陽能電池轉換效率

Investigation on the power conversion efficiency of perovskite solar cells by stacking the active layers

陳冠宇(Guan-Yu Chen)

指導教授 ： 蘇水祥

共同指導教授 ： 橫山明聰(Meiso Yokoyama)

義守大學/電機資訊學院/電子工程學系/碩士(2017年)

摘要

本論文主旨以改變碘化鉛(PbI2)厚度、CH3NH3I(MAI)濃度、反應時間以及熱處理溫度，先行優化有機/無機金屬鹵化物鈣鈦礦(perovskite)主動層，而後以堆疊主動層方式製作太陽能電池元件，藉由增加電池吸收光的強度而提升能量轉換效率(power conversion efficiency, PCE)。
研究結果顯示，當以真空沉積的PbI2厚度為50 nm，MAI濃度為10 mg與反應時間為60 sec時，固定上述優化參數，具單層鈣鈦礦主動層之太陽能電池其PCE為0.79%，堆疊兩層、三層、四層與五層主動層時，太陽能電池PCE各為3.25%、3.98%、4.98%與2.4%。鈣鈦礦主動層堆疊從一層到四層，PCE提升了4.19%，元件最佳結構為：ITO/PEDOT:PSS/MAPbI3/PCBM/Ag，元件特性：開路電壓(open circuit voltage, VOC)為0.889 V、短路電流密度(short circuit current density, JSC)為10.97 mA/cm2、填充因子(fill factor, F.F.)為51.12%及PCE為4.98%。

關鍵字

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並列摘要

This study aimed to increase the intensity of the absorption of solar cells for the purpose of raising the power conversion efficiency (PCE) by changing the thickness of PbI2, the concentration of CH3NH3I(MAI), reaction time, and the annealing temperature, as well as creating in/organometal halide perovskite active layer by stacking.
The results showed that optimizing the thickness of (PbI2) to 50 nm, the concentration of MAI to 10 mg, the reaction time to 60 sec were the optimal parameters. The perovskite solar cell with a single active layer has the PCE of 0.79%. When stacking two, three, four and five layers of active layer, the PCE of solar cell was 3.25%, 3.98%, 4.98% and 2.4%, respectively. The PCE would be intensified by 4.19% when stacking perovskite active layers from one to four. The optimum structure was: ITO/PEDOT:PSS/MAPbI3/PCBM/Ag. The characteristics of the device were: the open circuit voltage (VOC) was 0.889 V, the short circuit current density (JSC) was 10.97 mA/cm2, the fill factor (F.F.) was 51.12% and the PCE was 4.98%.

並列關鍵字

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參考文獻

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