臺灣博碩士論文加值系統

本論文主要探討將氮摻雜石墨烯墨水應用於LED燈具塗佈進行熱管理，有別於一般石墨烯溶液，本研究採用調質後的氮摻雜石墨烯不具導電性，用於需要絕緣的物體表面，預防電子零件短路，而良好的導熱性提供高散熱效果，用於需散熱的零件、產品。LED燈具輔以熱電偶進行溫度量測與積分球光學量測，探討散熱之實際成效。對於LED燈具C2-0349在不同電壓下，針對原始燈具、銑背燈具與氮摻雜石墨烯塗層(Nitrogen-doped Graphene Coating, NGC)燈具，擷取實際工作溫度與積分球所測得流明(lm)/瓦數(W)，依實際測得數據用來計算發光效率，且探討散熱趨勢等處與比較優化後提升發光效率的結果。
文中對於所使用的氮摻雜石墨烯也進行相關表徵實驗以原子力顯微鏡(Atomic Force Microscopy, AFM)、掃描式電子顯微鏡(Scanning Electron Microscopy, SEM)、X射線光電子能譜儀(X-ray Photoelectron Spectroscopy, XPS)、X-ray粉末繞射儀(X-ray powder diffraction, XRD)、拉曼光譜(Ramam spectroscopy)分析其材料特性。石墨烯檢測出含有氮的存在含量為6.3%，在鍍層上進行百格測試，在切口的相交處有小片剝落，劃格區內實際破損≤5%，四點探針電阻量測，結果說明此氮摻雜石墨烯墨水為絕緣型；同時實際量測結果顯示銑背燈具會造成積熱，不易散熱；而NGC燈具會比原始燈具來的好。

This study discusses the application of nitrogen-doped graphene ink into the LED lamp coating for thermal management, which is different from general graphene solution. In this study, nitrogen-doped graphene after adjustment is not conductive, use on the surface of objects that need to be insulated to prevent short circuits of electronic parts and the good thermal conductivity provides the products and parts which require high heat dissipation. LED lamps use the thermocouples for temperature measurement and the integrating sphere optical measurement to find out the practical effects of heat dissipation. For the LED aluminum lamp C2-0349, the original lamp、milled back lamp and the NGC lamp's lumens (lm)/wattage (W) was measured through actual working temperature and Integrating sphere in the different voltage. Based on experimental data calculated, discussed the results of the heat dissipation trend and the improvement of the luminous efficiency after optimizing. The nitrogen-doped graphene used in the paper was also representation and analysis of the material performance by AFM、XPS 、XPD and Ramam Spectroscopy. The four-point probe resistance measurement confirm that the nitrogen-doped graphene ink is insulated; According to the actual measurement results show that the milled back lamp was heat accumulation and is not easy to dissipate heat; and the NGC lamp is better than the original lamp.

摘要 i
ABSTRACT ii
誌謝 iii
目錄 iv
表目錄 vi
圖目錄 vii
第一章 緒論 1
1.1 前言 1
1.2 研究動機與目的 3
1.3 論文架構 5
1.4 文獻回顧 8
1.4.1 石墨烯文獻探討 8
1.4.2 LED燈具文獻探討 13
第二章 研究相關之理論 14
2.1 LED理論介紹 14
2.2 氮摻雜石墨烯理論與應用介紹 21
2.3 熱傳遞與熱阻理論介紹 24
第三章 氮摻雜石墨烯表徵實驗 29
3.1 氮摻雜石墨烯表徵實驗 29
3.1.1 原子力顯微鏡（Atomic Force Microscopy, AFM） 29
3.1.2 掃瞄式電子顯微鏡(Scanning Electron Microscopy, SEM) 32
3.1.3 X射線光電子能譜分析(X-ray Photoelectron Spectroscopy, XPS) 34
3.1.4 X-ray粉末繞射儀(X-ray powder diffraction, XRD) 37
3.1.5 拉曼光譜(Ramam spectroscopy ) 38
3.2 氮摻雜石墨烯墨水應用實驗 41
3.2.1 百格測試 41
3.2.2 四點探針電阻量測 42
第四章 實驗設置 47
4.1 實驗設置參數 47
4.2 積分球光學量測 48
4.3 熱電偶溫度量測 50
第五章 結果與討論 52
5.1 熱電偶溫度量測結果 53
5.1.1 原始燈具溫度 53
5.1.2 銑背燈具溫度 57
5.1.3 NGC燈具溫度 61
5.2 各型式燈具輸入不同電壓下溫度比較 65
5.2.1 原始燈具與銑背燈具溫度比較 65
5.2.2 NGC燈具與原始燈具溫度比較 69
5.2.3 NGC燈具與銑背燈具溫度比較 73
5.3 積分球實驗量測結果 77
5.3.1 原始LED燈具積分球實驗結果 78
5.3.2 銑背燈具積分球實驗結果 80
5.3.3 NGC燈具積分球實驗結果 82
5.3.4 各型式輸入不同電壓下光通量比較 84
第六章 結論與未來展望 85
6.1 結論 85
6.2 未來展望 86
參考文獻 87

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