臺灣博碩士論文加值系統

本論文採用化學浴沉積法(chemical bath deposition，CBD)製備氧化亞銅(Cu2O)於氧化鋁基板。實驗以硫酸銅(CuSO4)及亞硫酸鈉(Na2SO3)作為製備氧化亞銅的前驅溶液。製備過程中藉由改變CBD製程中加入葡萄糖(催化劑)的時間與調控後續之退火溫度來探討他們對氧化亞銅粒子形貌物理特性之影響。氧化亞銅(Cu2O)的外部形貌、成分組成與各項光電物理特性分別使用掃描式電子顯微鏡(SEM)、X光繞射儀(XRD)、X光能量分布儀(EDS)及可見光光譜儀(UV-Vis spectroscopy)來分析與鑑定。研究結果顯示，當催化劑在加熱前就加入CBD反應溶液會遏止氧化亞銅粒子生長時的團聚作用，使氧化亞銅呈現單體成核而不是群聚成核。而提升氧化亞銅退火溫度時，研究發現氧化亞銅晶粒會隨著退火溫度的上升有整併粗化的現象，且氧化亞銅的結晶品質也隨著退火溫度上升而有優化的現象。但退火溫度高於600°C之後，會使得氧化亞銅產生相型態的轉變形成氧化銅(CuO)及銅金屬(Cu)。

In this thesis, cuprous oxide (Cu2O) was prepared on the sapphire substrate (Al2O3) by chemical bath deposition (CBD) method using copper sulfate (CuSO4) and sodium sulfite (Na2SO3) as the precursor solution. Also, the influence of the addition of glucose (catalyst) and the annealing temperature on the morphology and structural properties of Cu2O was investigated by Scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray energy dispersive (EDS) and UV-Vis spectroscopy.

The results show that the addition of glucose to the CBD solution prior to heating will curb the agglomeration of the Cu2O particles, and Cu2O appears as isolated nuclei rather than clustered particles. It was found that the grain size of Cu2Obecame coalesced with the increase of annealing temperature, and the crystallization quality of Cu2O was also improved with the increase of annealing temperature. However, after the annealing temperature is higher than 600°C, Cu2O phase was found to transforming into copper oxide (CuO) phase and copper metal (Cu).

誌謝辭…………………………………….………………………………i
中文摘要………………………………………………………………....ii
Abstract………………………………………………………………….iii
Table of contents……………………………………………………...….iv
List of figures…………………………………………………................vi
Chapter 1. Introduction………………………………………………………………1
Chapter 2. Background review
§2-1 Properties of Cu2O…………………………………...……………...2
§2-2 Chemical coating………………………………………....................3
§2-3 The principle of thin film growth…………………………………...6
Chapter 3. Experimental procedures and analytical tools
§ 3-1 Substrate cleaning…………………………………….....................9
§ 3-2 CBD process of Cu2O…………………………………..................10
§ 3-3 Scanning electron microscopy (SEM)……………………...……..10
§ 3-4X-ray Diffractometry (XRD)…….………………….......................11
§ 3-5UV-Vis Spectrophotometry……………………………………......12
§ 3-6 Energy Dispersive Spectroscopy (EDS)..…………………..…......12
Chapter 4. Results and discussion
§ 4-1 The effect of glucose on the CBD of Cu2O at various time Intervals…………………………………………………………………15
§4-2 The influence of CBD deposition temperature and annealing temperature on the physical properties of annealed Cu2O………....20
Chapter 5. Conclusions and future works…………………………...…..39
References………………………………………………………………40

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