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研究生:張毓真
研究生(外文):Yu-Chen Chang
論文名稱:非摻質型含蒽咔唑衍生物之藍光有機電激發光材料之合成與電激發光特性之研究
論文名稱(外文):Non-doped Blue Light-Emitting Diodes Based on Carbazole-Containing Anthracene Derivatives
指導教授:鄭如忠
指導教授(外文):Ru-Jong Jeng
口試委員:陳錦地李榮和丁維和
口試日期:2011-06-14
學位類別:碩士
校院名稱:國立中興大學
系所名稱:化學工程學系所
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:中文
論文頁數:83
中文關鍵詞:
外文關鍵詞:OLEDanthracenecarbazole
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本研究旨在以蒽為主體,導入咔唑弱推官能基以提升材料效率,並搭配不同苯環橋接官能基及叔丁基防止分子間堆疊,合成出四種藍光含蒽咔唑衍生物(Cz3An、Cz3Ant、Cz3PhAn、Cz3PhAnt)。光物理性質分析,在二氯甲烷溶液下四種衍生物的最大吸收波長為397、378、355~359 nm、最大放光波長為440~453 nm,在固體狀態下的最大放光波長為455~456 nm,量子效率在四氯甲烷溶液及固體粉末下分別為71~87、24~27 %。經由熱性質分析,四種衍生物擁有400 ℃以上的熱裂解溫度及350 ℃以上的熔點。
元件方面以銦錫氧化物為陽極、鋁為陰極、LiF為電子注入層、NPB為電洞傳遞層,以變換不同電子傳遞層(Alq3及TPBI)或是有無導入BCP為電洞阻擋層的四種元件組合,討論含蒽咔唑衍生物之發光效率。四種衍生物中以Cz3PhAn的性質最佳,在元件條件:ITO/NPB/Cz3PhAn/BCP/Alq3/LiF/Al,最大電激放光波長為472 nm、最大電流效率為4.52 cd/A、最大外部量子效率為2.32 %、最大亮度為25419 cd/m2,且材料熱裂解溫度高達495 ℃,熔點為422 ℃,成功合成出同時具有高熱性質及高亮度的藍光有機電激發光二極體材料。


A series of new blue-emitting materials, which contain an anthracene core and two carbazole end-capped groups, were synthesized and characterized. Owing to the presence of the sterically congested terminal groups, four carbazole-containing anthracene derivatives possessed high decomposition temperatures and melting points. Their physical properties were determined by UV absorption, photoluminescence, and quantum yield measurements. The materials exhibit PLmax values in the range of 440-453 nm in DCM, and Φf around 71-87 % in chloroform. Cyclic voltammetry showed that the HOMO levels of the derivatives as well as of many other compounds with an anthracene group as a core were also near 5.5-5.6 eV. In addition, the material with tert-butyl-substituted anthracene, and phenyl linkages (Cz3PhAn) exhibited much better electroluminescence (EL) as compared with other derivatives. Blue EL of Device C-series (ITO/NPB/Cz3PhAn/BCP/Alq3/LiF/Al) reached a maximum EL of 25419 cd/m2 with full-width-at-half-maximum (FWHM) of 82 nm, maximum current efficiency of 4.52 cd/A, maximum external quantum efficiency of 2.32%, and blue CIE coordinate of (0.18, 0.28).

目錄
摘要………………………………………………………………………..i
Abstract…………………………………………………………………...ii
圖目錄………………………………………………………………........iv
表目錄………………………………………………………………........vi
附錄目錄………………………………………………………………...vii
第一章 緒論…………………………………………………………….1
1-1 前言……………………………………………...……………........1
1-2 有機電激發光二極體的發展………………………...………........1
1-3 有機電激發光二極體的原理與發光機制………………...…........2
1-4 有機電激發光二極體的元件結構………………………………...6
1-5 有機電激發光二極體的材料……………………………………...8
1-5-1 電極材料…………………………………………………….8
1-5-2 電荷傳輸材料……………………………………………...10
第二章 文獻回顧與研究動機………………………………………...12
2-1 文獻回顧………………………………………………………….12
2-2 研究動機………………………………………………………….15
第三章 實驗部分……………………………………………………...16
3-1 實驗藥品與溶劑………………………………………………….16
3-2 實驗儀器………………………………………………………….18
3-3 合成流程………………………………………………………….22
3-4 實驗步驟………………………………………………………….24
3-4-1 中間產物的合成步驟……………………………………...24
3-4-2 最終產物的合成步驟……………………………………...27
第四章 結果與討論…………………………………………………...31
4-1 光物理性質(UV-Vis、PL、QY)的量測與探討…………………...31
4-2 熱性質(TGA、DSC)的量測與探討………………………………35
4-3 電化學性質(CV、PES)的量測與探討……………………………38
4-4 元件性質的量測與探討………………………………………….42
第五章 結論…………………………………………………………...61
第六章 参考文獻……………………………………………………...62
附錄……………………………………………………………………...66


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