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研究生:莊世杰
研究生(外文):Shih-ChiehChuang
論文名稱:藉由改變嵌入回音廊膜態之二維光子晶體共振腔結構提升發光二極體發光透射率
論文名稱(外文):Enhancing Light Extraction Efficiency for Light-Emitting Diode by Inserting the Whispering-Gallery Cavity
指導教授:王清正
指導教授(外文):Ching-Cheng Wang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:製造資訊與系統研究所碩博士班
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:78
中文關鍵詞:光子晶體發光二極體共振腔回音廊型共振
外文關鍵詞:Light extraction efficiencyfinite–difference time–domain methodphotonic crystalcavity
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許多研究致力於提升發光二極體(Light Emitting Diode,LED)之光萃取效率,並運用各種數值計算方法,其中一種是將二維光子晶體平板(2D photonic crystal slab, 2D PhC slab)結構置入LED之中。本文藉由平面波展開法(plane wave expansion method)及時域有限差分法(finite difference time domain method)來研究氮化鎵發光二極體(GaN LED)包覆層厚度,來分析光子晶體空氣柱之半徑及深度對LED光萃取率的影響,當深度及半徑參數設定適當時,可大幅提升光萃取效率。 進一步將點缺陷(point defect)置入光子晶體之中形成共振腔(resonance cavity)結構加以比較。被置入的缺陷類型分別為,H1、H2及H2之變型(回音廊型),三類共振腔。經比較,置入光子晶體發光二極體與原始發光二極體,光萃取率及光強度有明顯增加的現象。
The two dimensional photonic crystal slab with designated defects, namely H1, H2, and WGM type cavities, are investigated aiming at achieving more efficient light extraction. By using the finite–difference time–domain method, effects of finite air-hole radius and depth, and the thickness of cladding layer on the light extraction efficiency are examined. For the selected Gallium Nitrogen blue light emitting LED, values of radius, depth, thickness, that achieved improved photoluminescence, are identified.
摘要 ………………………………………………………………………I Abstract ............................................II
誌謝 ………………………………………………………………………III
符號 ………………………………………………………………………IV
目錄 ………………………………………………………………………VII
表目錄 ……………………………………………………………………IX
圖目錄 ………………………………………………………………………X
第一章 緒論
1-1 光子晶體簡介…………………………………………………………1
1-2 文獻回顧…………………………………………………………… 1
1-3 研究動機……………………………………………………………3
第二章 光子晶體基礎研究數值方法
2-1 平面波展開法………………………………………………………6
2-2 有限時域差分法……………………………………………………12
第三章 光子晶體發光二極體結構參數計算
3-1 發光二極體簡介及光子晶體應於發光二極體理論………………27
3-2 發光功率計算討論 ……………………………………………… 28
3-3 模擬計算光子晶體LED參數步驟…………………………………29
3-4 介面反射率…………………………………………………………30
3-5 等效折射率…………………………………………………………31
第四章 共振腔型光子晶體發光二極體
4-1 共振腔光子晶體…………………………………………………45
4-2 置入H1與H2型共振腔……………………………………………45
4-3 置入H2變形共振腔與H2回音廊型共振腔………………………46
4-4 H2變形共振腔之共振頻率及回音廊模態…………………………48
4-5 比較共振腔LED及光子晶體LED之光取出效率……………………48
4-6 光子晶體共振腔H1、H2、H2改變型之優缺點討論……………….49
第五章 結論與未來展望
5-1 結論 ………………………………………………………………74
5-2 未來展望 …………………………………………………………74
參考文獻 ………………………………………………………………76

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