本研究以化學氣相層積法製備甲基胺氯化鉛(MAPbCl3)鈣鈦礦薄膜，相較於一步法溶液製程，我們改善了其結晶速率過快與溶解度低的問題。首先我們探討不同退火溫度下氯化鉛(PbCl2)薄膜的結晶性，發現在低溫下是具有結晶性的緻密薄膜。接者我們在前驅溶液中加入不同比例苯乙胺(PEA)並分別與MABr加氯化膽鹼(C.C)以及MACl加上氯化膽鹼進行反應形成鈣鈦礦薄膜，並將其製備成鈣鈦礦發光二極體元件，在使用MACl加上C.C反應所製備元件發光波段在408nm的穩定紫色發光二極體，而使用MABr加上C.C所製備的元件，我們發現因為少量的溴離子存在於鈣鈦礦中，因而造成離子遷移效應使波長紅移至綠光波段。
此外我們在前驅溶液中加上不同比例的PbBr2以成長MAPbBr3-xClx混和物鈣鈦礦薄膜，透過添加的來PbBr2控制x鹵素比例，我們將發光波段408 nm處能夠調變至450 nm處。

In this study, the Methylamine Lead Chloride perovskite film was prepared by the chemical vapor deposition method. Compared with the one-step solution process, we improved the problem of excessive crystallization rate and low solubility. First, we explored the crystallinity of lead chloride films at different annealing temperatures and found that it is a dense film with crystallinity at low temperatures. Then we add phenethylamine in different proportions to the precursor solution and react with MABr plus choline chloride and MACl plus choline chloride to form a perovskite film, and used it to prepare a perovskite light-emitting diode device, using MACl plus CC reaction to prepare a stable purple light-emitting diode with a 408 nm emission band 408nm, and using MABr plus CC, we found that there is a small amount of bromide ion In the perovskite, the ion migration effect causes the red-shift of the wavelength to the green wavelength band.
In addition, we add different proportions of PbBr2 to the precursor solution to grow a MAPbBr3-xClx mixture perovskite film. Through the addition of PbBr2 to control the x halogen ratio, we can modulate the emission band at 408 nm to 450 nm.

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