研究生: |
林桂民 Lin, Gui-Min |
---|---|
論文名稱: |
磷光鉑二價錯合物含無共軛輔助配位基及氮雜環之合成、結構及光物理性質之探討 Phosphorescent Pt(II) Complex With Non-congugated Ancillary Ligand and Heteroaromatics ; Synthesis . Structures and Photophysical Properities |
指導教授: |
陳秋炳
Cheng, Cheu-Pyeng |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
理學院 - 化學系 Department of Chemistry |
論文出版年: | 2009 |
畢業學年度: | 97 |
語文別: | 中文 |
論文頁數: | 121 |
中文關鍵詞: | 有機電激發光二極體 、鉑 、無共軛 、芳香雜環 |
外文關鍵詞: | OLED, Pt, non-conjugated, heteroaromatics |
相關次數: | 點閱:2 下載:0 |
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我們藉由合環反應合成了含不同氮數的芳香雜環,並搭配上含未共軛之輔助
配位基合成了一系列的鉑二價錯合物,並且利用輔助配位基磷原子上的苯環來提
供立體障礙,使得這一系列化合物都沒有Pt-Pt作用力的存在。這一系列的化合
物除了dfPPyPtP^O在室溫溶液下可放出極弱的磷光外,其他的在溶液下均不放
光。其放光波段隨著含氮雜環上的氮數增加有藍位移(blue shift)的趨勢;從465
nm到474 nm,但是因為其半高寬太寬(50~75 nm),而使得放出之光色為藍綠光。
以dfppyPtP^O以及TriazoPyPtP^O這兩個化合物當作磷光摻雜物分別做了元件A
以及元件B,以下是所做出來的元件結果:
元件A:NPB(30 nm)/mCP:dfPPyPtPO(10%,30 nm)/BCP(10 nm)/Alq(30 nm)/LiF/Al
,元件外部量子效率(ηext)為2.13 %,電流效率(ηc)為5.84 cd/A,最大亮度(Lmax)
為6596 cd/m2,CIE座標為(0.17,0.45)。
元件B: NPB(30 nm)/mCP:TriazoPyPtP^O(10%,30 nm)/BCP(10 nm)/Alq(30
nm)/LiF/Al,元件外部量子效率(ηext)為2.17 %,電流效率(ηc)為6.10 cd/A,
最大亮度(Lmax)為4951 cd/m2,CIE座標為(0.21,0.49)。
We used cyclolization to synthesize heteroaromatics that contain different numbers of
N to combine with non-conjugated ancillary ligand to synthesize a series of Pt(II)
complex. The phenyl group on the P atom of ancillary ligand created steric hindrance
which inhibits the Pt-Pt interaction in this series of compound. This series of
compound did not emit phosphoresence in solvents besides compound dfppyPtP^O;
yet, its emittance was rather weak. As the number of N in the heteroaromatics
increased the emitting λmax blue shifted from 465 nm to 474 nm. However, the width
of the full-width-half-maximum (FWHM) was too wide which resulted in the
emittance of blue-green light.
We take dfPPyPtP^O and TriazoPyPtP^O as dophants to construct devices A and B,
and the followings are the results.
Device A: NPB(30 nm)/mCP:dfPPyPtPO(10%,30 nm)/BCP(10 nm)/Alq(30
nm)/LiF/Al; this device can achieve an external quantum efficiency(ηext) of 2.13%,
current efficiency(ηc) of 5.84 cd/A, maximum brightness(Lmax) of 6596 cd/m2, and
CIE coordinates of (0.17,0.45). Device B: NPB(30 nm)/mCP:TriazoPyPtP^O(10%,30
nm)/BCP(10 nm)/Alq(30 nm)/LiF/Al; this device can achieve an external quantum
efficiency(ηext) of 2.17%, current efficiency(ηc) of 6.10 cd/A, maximum
brightness(Lmax) of 4951 cd/m2, and CIE coordinates of(0.21,0.49).
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