臺灣博碩士論文加值系統

本研究以溶膠凝膠法製備銅鋅錫硫(Cu2ZnSnS4)粉末，以氯化銅、氯化鋅、氯化錫及硫脲作為反應物加入水與酒精 100cc(比例 7:3)的溶液中以磁石攪拌隔水加熱(40℃)進行溶膠凝膠合成20分鐘 反應合成後的樣品以150℃進行烘乾5小時烘乾的樣品以研磨缽加以研磨再分別以200、300、400及500℃進行燒結然後再進行硫化處理(500℃) 所得之樣品分別標記為200T、300T、400T及500T使用XRD及SEM儀器分析材料之結構及表面特性，並使用紫外光/可見光光譜儀和LCR探討硫化處理前後之光學特性。

未經硫化處理的樣品經由XRD結構分析，200℃燒結的樣品沒有明顯的繞射結構 研判應為非晶結構， 300℃燒結的樣品有CuS、Cu9S8等結構的繞射峰而400℃及500℃燒結的樣品則只有較明顯的CuO結構，經硫化處理後的樣品則為CZTS的結構，光學特性主要探討樣品對光源的阻值變化，以UV及白光LED做為測試之光源，並比較硫化處理前後的樣品對於不同光源照射下的光敏反應。

In this study, copper zinc tin Sulphur (Cu2ZnSnS4) powder was prepared by sol-gel method. Copper chloride, zinc chloride, tin chloride and thiourea were used as raw materials, and were added to a solution (100cc) of water and alcohol in a ratio of 7:3. The suspension was magnetically stirred and placed on a hot plate for water insulation heating at 40℃ for 20min. The synthesized samples were put in an oven for drying at 150 °C for 5 hours. The dried samples were taken into a bowl for grinding into powder. The powders were then backed at 200, 300, 400 and 500 °C, respectively, and labeled as 200T, 300T, 400T, 500T. Structure properties and morphology of the samples were characterized by XRD and SEM. Optical and sensing properties were analysis by using UV-visible spectrometer and LCR.

The samples (backed at 200 °C without sulfurization) reveal amorphous structure as checked by XRD, and the samples (backed at 300 °C) show CuS and Cu9S8 inside. With increasing the backing temperature to 400℃or 500°C, only obvious CuO was found in the samples. After sulfurization, all of the samples reveal CZTS structures. The optical properties were characterized by the correspondence impedance to the irradiating light sources. UV and white LED are used as the light sources. The optical sensing includes the samples with or without sulfurization treatment.

摘要 i
ABSTRACT ii
誌謝 iii
目錄 iv
圖目錄 vi
表目錄 vii
第一章緒論 1
1-1前言 1
1-2論文架構 2
第二章文獻回顧與研究動機 3
2-1研究動機 3
2-2光電材料 4
2-3光感測器 5
2-4 CZTS材料介紹 6
2-5 合成方法 7
2-5-1溶膠凝膠法 7
2-5-2溶膠凝膠法之優點 8
2-5-3硫化處理 8
第三章實驗方法與步驟 9
3-1.實驗材料 9
3-2.量測儀器 9
3-3實驗儀器 10
3-4.實驗方法與流程 10
3-4-1. 以溶膠凝膠法製備CZTS粉末 10
3-4-2. 硫化處理CZTS粉末 12
3-4-3.製備濕度感測器 13
3-4-4.濕度感測 13
3-4-5光催化實驗 14
3-5.材料特性量測與分析 15
3-5-1.X-ray繞射儀(X-ray diffractometer , XRD) 15
3-5-2紫外光/可見光光譜儀 (UV-Visible Spectroscopy) 15
3-5-3 光催化降解 16
第四章 結果與討論 17
4-1.材料特性與分析 17
4-1-1.XRD 17
4-1-2. 未硫化各燒結溫度之紫外光/可見光光譜儀分析 19
4-2.感測器結果與探討 20
4-2-1.濕度感測實驗 20
4-3.光催化降解 23
第五章 結論 26
參考文獻 27

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