在近幾年來，鹵化物鈣鈦礦由於其優異的光電特性，在發光材料中已成為非常熱門的研究對象，但是儘管在低溫下實現了以連續波(continuous-wave，CW)激發的鈣鈦礦雷射，鈣鈦礦材料對水分的敏感性和低的熱穩定性仍然是研究和商業應用的障礙。在本研究中，我們以簡易的溶液製程合成基本鈣鈦礦材料甲基銨碘化鉛(methylammonium lead iodide，CH3NH3PbI3)，以均勻的薄膜形式成長於以雷射加熱基座生長法(laser-heated pedestal growth，LHPG)所生長之釔鋁石榴石(yttrium aluminum garnet，YAG)晶體光纖表面。由於YAG晶體良好的導熱性能，我們成功的在室溫中以連續波雷射在激發功率低於1 μW時發現了放大自發輻射(amplified spontaneous emission，ASE)的現象。為了探討震盪腔與ASE之間的關係，我們以本實驗室提出之濕蝕刻技術，將YAG晶體光纖直徑縮減至30、20、10 μm，並於直徑10 μm之YAG晶體光纖樣品中得到了約10 nW之極低的閥值(threshold)。我們的研究為將來開發高效鈣鈦礦光纖雷射的可能更邁進了一大步。

In recent years, halide perovskites have become a very popular research object in luminescent materials due to the excellent photoelectric properties. Although perovskite laser pumped by continuous-wave (CW) has been achieved at low temperatures, the moisture sensitivity and low thermal stability of perovskite materials are still difficult to academic research and commercial applications. In this study, we synthesized the basic perovskite material, methylammonium lead iodide (CH3NH3PbI3), by a simple solution process, and grown it in the form of uniform thin film onto yttrium aluminum garnet (YAG) crystal fiber which was grown by laser-heated pedestal growth (LHPG). Due to the good thermal conductivity of YAG crystals, we successfully found amplified spontaneous emission (ASE) phenomenon with continuous-wave laser at room temperature when the excitation power is lower than 1 μW. In order to explore the relationship between the cavity and ASE, we reduced the diameter of YAG crystal fiber to 30, 20, and 10 μm by using the wet etching technology proposed by our laboratory, and obtained a very low threshold in the YAG crystal fiber sample with a diameter of 10 μm. Our research has taken a big step forward for the development of high-efficiency perovskite fiber lasers in the future.

第一章 緒論與文獻回顧 1
1-1 前言與研究動機 1
1-2 自發放大輻射(amplified spontaneous emission，ASE)原理與應用 3
1-3鈣鈦礦介紹 4
1-4 釔鋁石榴石介紹 6
1-4-1 YAG晶體光纖的製備方法 7
1-5 法布立-佩羅諧振腔(Fabry-Perot cavity)介紹 8
第二章 儀器分析與實驗方法 11
2-1 材料製作設備與方法 11
2-1-1 爐管式化學氣相蒸鍍儀(tube furnace chemical vapor deposition chamber) 11
2-1-2 YAG晶體光纖蝕刻 12
2-1-3 PbI2溶液配置 13
2-1-4 鈣鈦礦生長 14
2-2 分析儀器與原理 14
2-2 場發射掃描式電子顯微鏡(field-emission scanning electron microscopy，FESEM) 15
2-3 共軛焦雷射掃描式顯微鏡(laser scanning confocal microscope，LSCM)
16
第三章 實驗數據與分析 17
3-1 時間改變下蝕刻形貌之差異 17
3-2 鈣鈦礦量測 18
3-2-1 光學顯微鏡量測 18
3-2-2 2D螢光分佈量測 20
3-2-3 光致發光(photoluminescence，PL)光譜量測 21
3-2-4 螢光生命週期量測 25
3-2-5 1 μm光纖樣品量測 28
3-3 實驗模擬 30
第四章 結論 47
參考文獻 49

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