本論文探討使用高溫爐進行氣相沉積法(Vapor deposition method)長成之鈣鈦礦(perovskite)薄膜進行室溫環境光性量測分析。利用電子顯微鏡(SEM)對鈣鈦礦晶體之形貌與晶體形狀分析，確認其轉換前後之大小分布、形貌變化與構成。在光性分析方面，透過吸收圖譜、穿透圖譜、室溫及低溫螢光光譜量測，確認其能隙(bandgap)分布。透過532奈米連續雷射進行樣品激發並觀察、分析樣品之螢光性質，如:光穩定度。而我們在量測過程中，透過雷射聚焦樣品之不同深淺位置，觀測到雙峰螢光訊號，並確認樣品之構成有可能不同，使用XRD進行物質構成分析，對此現象推斷出較佳的解釋。
在量測氣相法及旋塗法生成之鈣鈦礦光譜實驗時，樣品所處之濕度接此於相對濕度50%，此濕度十分接近國外學者之高濕度環境。有此得知，吾人所作之樣品具有相當高之穩定性及壽命。

We report the optical characterizations of perovskite (CH3NH3PbI3) thin films prepared by vapor deposition method. By SEM, we could observe the difference of crystal size and shape between PbI2 and CH3NH3PbI3 prepared by vapor deposition method. The absorbance and transition spectra were investigated to confirm the optical difference between PbI2 and CH3NH3PbI3. Photoluminescence peak of the perovskite films at 780 nm excited via 532 nm CW laser at room temperature was observed, and we confirm the bandgap is around 1.58 eV at room temperature through experiments stated above and temperature-dependent PL measurement. We also found that high photoluminescence stability of perovskite films prepared by vapor deposition at high relative humidity. Last, we observed emission peak located at about 780 nm, and we change the depths of the films which 532 nm CW laser focuses on to observe PL spectra. We found the appearance of two peaks. Through XRD patterns, we could infer the origins of this feature.
All measurements except temperature-dependent PL spectra are processed at room temperature and 50% relative humidity. This humidity is much higher than other foreign studies. Perovskite material has high sensitivity to water molecules, so people would prevent perovskite samples from water or high humidity. Thus, our sample is very strong.

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