在本研究主要探討低溫二氧化鈦結構層製備以應用於可撓式鈣鈦礦太陽能電池。研究初期先鈣鈦礦的優化條件。由結果可知：於碘化鉛與甲基碘化胺兩步驟的熱處理時間為15分鐘時，可獲得較佳的光電轉化效率，且元件磁滯效應較小。將此條件進一步運用於紫外光照射二氧化鈦結構層之低溫製程上，分別進行紫外光不同照射時間對於鈣鈦礦太陽能電池效能的影響。由研究結果可知：當紫外光照射時間達200分鐘時，二氧化鈦結構層擁有較佳的表面形態及結晶性質，因此可獲得8.28 %的光電轉化效率。此外，為了進一步提高鈣鈦礦太陽能電池，分別以硝酸製程及二乙醇胺製程進行二氧化鈦緻密層塗佈，並在氟摻雜氧化錫玻璃基板上製備鈣鈦礦太陽能電池分別可達到15.30 % 及10.23 % 的光電轉化效率。但將以上兩種緻密層製程應用在氧化銦錫/聚萘二甲酸乙二醇酯可撓曲基材時，由於硝酸會劣化氧化銦錫的導電性質，光電轉化效率僅達6.07 %；相較之下，二乙醇胺製程由於不會劣化氧化銦錫導電層，因此光電轉化效率可達到9.31 %。

In this study, we investigated the low temperature process for titanium dioxide (TiO2) meso-porous structural layer used in flexible perovskite solar cells. Firstly, we studied the optimal conditions for preparing pervoskite layer via sequential deposition process. According to results, the pervoskite solar cells with the best performance and less hysteresis behavior would be obtained under 15 min heating time for lead iodide and methylammonium iodide. We further applied above conditions on UV irradiated TiO2 meso-porous structural layer under low temperature process and studied the influence of UV irradiation time on the performance of perovskite solar cell. From analysis results, we could observe that the morphology and crystallinity of TiO2 meso-porous structural layer were good and the power conversion efficiency (PCE) can achieve 8.28 % when UV irradiation time around 200 min. To increase the efficiency furthermore, TiO2 treated by nitric acid and di-ethanolamine (DEA) were employed as compact layer. When nitric acid and DEA treated TiO2 compact layer were applied on fluoride-doped tin oxide (FTO) glass substrate, the PCE of perovskite solar cells could achieve 15.30 % and 10.23 %, respectively. However, when nitric acied treated TiO2 compact layer was applied on indium tin oxide (ITO)/ploy(ethylene naphthalate) (PEN) substrate, the PCE only achieved around 6.07% because ITO would be deteriorated by nitric acid easily. Comparing with nitric acid based process, the PCE of perovskite solar cell colud achieve 9.31 % because ITO would not be affectd by DEA.

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