TWI612028B - 有機電子傳輸材料 - Google Patents
有機電子傳輸材料 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 26
- 150000001875 compounds Chemical class 0.000 claims abstract description 19
- 239000001257 hydrogen Substances 0.000 claims abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 abstract description 17
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 abstract description 3
- 125000000217 alkyl group Chemical group 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 abstract description 2
- 229910052736 halogen Inorganic materials 0.000 abstract description 2
- 150000002367 halogens Chemical class 0.000 abstract description 2
- 125000000304 alkynyl group Chemical group 0.000 abstract 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 125000001424 substituent group Chemical group 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 52
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 8
- 229940125904 compound 1 Drugs 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 239000011521 glass Substances 0.000 description 7
- 230000005525 hole transport Effects 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000005684 electric field Effects 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- STTGYIUESPWXOW-UHFFFAOYSA-N 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline Chemical compound C=12C=CC3=C(C=4C=CC=CC=4)C=C(C)N=C3C2=NC(C)=CC=1C1=CC=CC=C1 STTGYIUESPWXOW-UHFFFAOYSA-N 0.000 description 4
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012044 organic layer Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- DHDHJYNTEFLIHY-UHFFFAOYSA-N 4,7-diphenyl-1,10-phenanthroline Chemical compound C1=CC=CC=C1C1=CC=NC2=C1C=CC1=C(C=3C=CC=CC=3)C=CN=C21 DHDHJYNTEFLIHY-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 238000004128 high performance liquid chromatography Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 2
- 229940126062 Compound A Drugs 0.000 description 2
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 2
- 125000005038 alkynylalkyl group Chemical group 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- JNGZXGGOCLZBFB-IVCQMTBJSA-N compound E Chemical compound N([C@@H](C)C(=O)N[C@@H]1C(N(C)C2=CC=CC=C2C(C=2C=CC=CC=2)=N1)=O)C(=O)CC1=CC(F)=CC(F)=C1 JNGZXGGOCLZBFB-IVCQMTBJSA-N 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001894 space-charge-limited current method Methods 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- CINYXYWQPZSTOT-UHFFFAOYSA-N 3-[3-[3,5-bis(3-pyridin-3-ylphenyl)phenyl]phenyl]pyridine Chemical compound C1=CN=CC(C=2C=C(C=CC=2)C=2C=C(C=C(C=2)C=2C=C(C=CC=2)C=2C=NC=CC=2)C=2C=C(C=CC=2)C=2C=NC=CC=2)=C1 CINYXYWQPZSTOT-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- -1 and conversely Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000007867 post-reaction treatment Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000002061 vacuum sublimation Methods 0.000 description 1
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/622—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing four rings, e.g. pyrene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C13/00—Cyclic hydrocarbons containing rings other than, or in addition to, six-membered aromatic rings
- C07C13/28—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof
- C07C13/32—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings
- C07C13/62—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings with more than three condensed rings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C13/00—Cyclic hydrocarbons containing rings other than, or in addition to, six-membered aromatic rings
- C07C13/28—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof
- C07C13/32—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings
- C07C13/62—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings with more than three condensed rings
- C07C13/66—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings with more than three condensed rings the condensed ring system contains only four rings
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- H10K10/00—Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/15—Hole transporting layers
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
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- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/02—Ortho- or ortho- and peri-condensed systems
- C07C2603/40—Ortho- or ortho- and peri-condensed systems containing four condensed rings
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Abstract
本發明涉及一種有機電子傳輸材料,具有式(I)所述結構的化合物,其中,R1-R4獨立地表示為氫、C1-C8取代或者未取代的烷基、或C2-C8取代或者未取代的烯烷基、或C2-C8取代或者未取代的炔烷基,其中取代基為C1-C4的烷基或鹵素。器件實驗表明,使用本發明的有機電子傳輸材料製備的僅電子有機半導體二極體器件及有機電致發光器件電子傳輸性能好,亮度高且穩定,器件壽命長。
Description
本發明涉及新型的有機電子傳輸材料,通過真空沉積成薄膜,可應用於僅電子有機半導體二極體器件。
僅電子有機半導體二極體器件是單載流子器件的一種,作為功率半導體裝置用於智慧數位功率積體電路的開關或整流器。其中本發明的電子傳輸材料也可應用於有機電致發光器件及場效應電晶體。
僅電子有機半導體二極體器件為在兩個金屬、無機物或有機化合物的電極之間通過旋塗或沉積一層或多層有機材料而製備的器件。一個經典的一層僅電子有機半導體二極體器件包含陽極,電子傳輸層和陰極。在多層僅電子有機半導體二極體器件陽極和電子傳輸層之間可以加入空穴阻擋層,而電子傳輸層和陰極之間可以加入電子注入層。空穴阻擋層,電子傳輸層和電子注入層分別由空穴阻擋材料,電子傳輸材料和電子注入材料組成。連接到僅電子有機半導體二極體器件的電壓到達開啟電壓後,由陰極產生的電子經電子傳輸層傳輸到陽極,相反地,空穴不能從陽極注入。僅電子有機半導體二極體器件中的電子傳輸材料可應用到其它半導體器件如有機電致發光器件。有機電致發光
器件市場龐大,因而穩定、高效的有機電子傳輸材料對有機電致發光器件的應用和推廣具有重要作用,同時也是有機電致發光大面積面板顯示的應用推廣的迫切需求。
市場上現有較多使用的電子傳輸材料向紅菲咯啉(bathophenanthroline,BPhen)和浴銅靈(bathocuproine,BCP),基本上能符合有機電致發光面板的市場需求,但其效率和穩定性仍有待進一步提高。BPhen及BCP材料有著容易結晶的缺點。電子傳輸材料一旦結晶,分子間的電荷躍遷機制跟在正常運作的非晶態薄膜機制不相同,引致電子傳輸性能改變。在有機電致發光器件中使用,時間過後會使整個器件導電性能改變,令電子和空穴電荷遷移率失衡,引致到器件效能下降,也可能會在器件中產生局部短路,影響器件穩定性,甚至令器件失效。(參考文獻Journal of Applied Physics 80,2883(1996);doi:10.1063/1.363140)
雖然BPhen的合成已經有相當成熟的工藝,(參考文獻WO 2010127574 A1)但是其使用之原材料鄰苯二胺(CAS 95-54-5)已被美國國家環境保護局列為對水生生物有很強毒性的化合物。考慮要保護我們的國家環境和水資源免受污染,新型電子傳輸材料的研發需求是非常迫切。非雜環的熒蒽化合物只含碳氫元素,在OLED器件可以用作電子輸送材料和發光材料,(參考文獻WO 2013182046 A1)但其傳輸效率和熱穩定性仍有待進一步提高。
針對上述材料的缺陷,本發明提供一種可應用在長壽命僅電子有機半導體二極體器件和有機電致發光器件中的高形態穩定性的有機電子傳輸材料,該電子傳輸材料的電子傳輸性能好,亮度高。
其中,R1-R4獨立地表示為氫、C1-C8取代或者未取代的烷基、或C2-C8取代或者未取代的烯烷基、或C2-C8取代或者未取代的炔烷基,其中取代基為C1-C4的烷基或鹵素。
優選:其中,R1-R4獨立地表示為氫、C1-C4取代或者未取代的烷基、或C2-C4取代或者未取代的烯烷基,或C2-C4取代或者未取代的炔烷基。
優選:其中R1-R4獨立地表示為氫、C1-C4的烷基。
優選:R1-R4相同。
優選:其中,R1-R4優選表示為氫。
所述有機層為空穴阻擋層、電子傳輸層、電子注入層中的一層或多層。需要特別指出,上述有機層可以根據需要,這些有機層不必每層都存在。
所述空穴傳擋層,電子傳輸層和/或電子注入層中含有式(I)所述的化合物。
所述式(I)所述的化合物為電子傳輸材料。
本發明的電子器件有機層的總厚度為1-1000nm,優選1-500nm,更優選5-300nm。
所述有機層可以通過蒸鍍或旋塗形成薄膜。
器件實驗表明,使用本發明的有機電子傳輸材料製備的僅電子有機半導體二極體器件及有機電致發光器件電子傳輸性能好,亮度高且穩定,器件壽命長。
10‧‧‧玻璃基板
20‧‧‧陽極
30‧‧‧空穴阻擋層
40‧‧‧電子傳輸層
50‧‧‧電子注入層
60‧‧‧陰極
10’‧‧‧玻璃基板
20’‧‧‧陽極
30’‧‧‧空穴注入層
40’‧‧‧空穴傳輸層
50’‧‧‧發光層
60’‧‧‧電子傳輸層
70’‧‧‧陰極
圖1為化合物1的HPLC圖;圖2為化合物1的氫譜圖;圖3為化合物1的熱重+TGA圖;圖4為本發明的僅電子有機半導體二極體器件結構圖;其中10代表為玻璃基板,20代表為陽極,30代表為空穴阻擋層,40代表為電子傳輸層,50代表電子注入層,60代表為陰極;圖5為本發明器件1的電壓-電流密度圖;圖6為本發明器件2的電壓-電流密度圖;圖7為本發明器件3、4的電壓-電流密度圖;圖8為本發明器件3、4的電流密度-電流效率圖;圖9為發明器件3、4的亮度-色座標y圖;圖10為發明器件3、4的發射光譜圖;以及圖11為本發明的有機電致發光器件結構圖,其中10’代表為玻璃基板,20’代表為陽極,30’代表為空穴注入層,40’代表為空穴傳輸層,50’代表發光層,60’代表為電子傳輸層,70’代表為陰極。
為了更詳細敘述本發明,特舉以下例子,但是不限於此。
實施例1
化合物A按照參考文獻ACS Macro Letter,2014,3,10-15過程合成。化合物B按照參考文獻WO 2013182046 A1過程合成。
反應投放:向250-mL反應燒瓶中加入化合物A(2.21g,11mmol),化合物B(7.80g,22mmol)和二苯醚(100mL)。氮氣排空3次,加熱升溫至260℃,保持此溫度,反應8小時,TLC及HPLC檢測化合物B反應完全。反應期間反應液的顏色變化由黑色變成黃色。
反應後處理:停止加熱,降溫至20℃,加入甲醇(100mL),攪拌2h析出固體,濾餅用甲醇洗滌,真空乾燥得到粗品。粗品加入乙酸乙酯打漿得到黃色的化合物1(4.32g,產率46%,HPLC純度93.58%)。真空昇華(360℃,2 x 10-5torr,8小時)得到淺黃色固體粉末,純度99.5%。見圖1。
液相的條件如下:色譜柱:Inertsil ODS-SP 4.6*250mm,5μm,柱溫:40℃
溶劑:DCM,流動相:ACN,檢測波長:254nm
峰值計算圖如下表:
〈峰表〉
檢測器A 254nm
1H NMR(300MHz,CDCl3)δ 7.78-7.66(m,8H),7.59-7.46(m,6H),7.43-7.33(m,116H),7.32-7.46(m,12H)。見圖2。
TGA圖見圖3。
實施例2:僅電子有機半導體二極體器件1的製備
使用本發明的有機電子傳輸材料製備僅電子有機半導體二極體器件:首先,將透明導電ITO玻璃基板10(上面帶有陽極20)依次經:洗滌劑溶液和去離子水,乙醇,丙酮,去離子水洗淨,再用氧等離子處理30秒。
然後,在ITO上蒸鍍5nm厚的BCP作為空穴阻擋層30。
然後,在空穴阻擋層上蒸鍍100nm厚的化合物1作為電子傳輸層40。
然後,在電子傳輸層上蒸鍍1nm厚的氟化鋰作為電子注入層50。
最後,在電子注入層上蒸鍍100nm厚的鋁作為器件陰極60。
結構圖見圖4。
其中,J為電流密度(mA cm-2),ε為相對介電常數(有機材料通常取值為3),ε0為真空介電常數(8.85×10-14C V-1 cm-1),E為電場強度(V cm-1),L為器件中樣本的厚度(cm),μ0為零電場下的電荷遷移率(cm2 V-1 s-1),β為Poole-Frenkel因數,表示遷移率隨電場強度變化的快慢程度。
比較例1:僅電子有機半導體二極體器件2的製備
方法同實施例2,但使用常用市售化合物TmPyPB作為電子傳輸層40,製作對比用僅電子有機半導體二極體器件。
所製備的器件電子遷移率(cm2 V-1 s-1)
按式(1)式和圖5、6資料計算器件1和器件2在1 x 105V/cm和5 x 105V/cm工作電場下的電子遷移率明顯優於器件2的電子遷移率;在1 x 106V/cm工作電場下器件1和器件2的電子遷移率基本相同,說明化合物1的電子傳輸性能較好。
實施例3:有機電致發光器件3的製備
使用本發明的有機電子材料製備OLED:首先,將透明導電ITO玻璃基板10(上面帶有陽極20)依次經:洗滌劑溶液和去離子水,乙醇,丙酮,去離子水洗淨,再用氧等離子處理30秒。
然後,在ITO上蒸鍍90nm厚化合物C作為空穴注入層30。
然後,蒸鍍化合物D,形成30nm厚的空穴傳輸層40。
然後,在空穴傳輸層上蒸鍍40nm厚的化合物E(2%)與化合物F(98%)作為發光層50。
然後,在發光層上蒸鍍40nm厚的化合物1(50%)與LiQ(50%)作為電子傳輸層60。
最後,100nm Al作為器件陰極70。
(結構圖見圖11)
實施例4:有機電致發光器件4的製備
使用市售材料製備OLED:首先,將透明導電ITO玻璃基板10(上面帶有陽極20)依次經:洗滌劑溶液和去離子水,乙醇,丙酮,去離子水洗淨,再用氧等離子處理30秒。
然後,在ITO上蒸鍍90nm厚化合物C作為空穴注入層30。
然後,蒸鍍化合物D,形成30nm厚的空穴傳輸層40。
然後,在空穴傳輸層上蒸鍍40nm厚的化合物E(2%)與化合物F98%)作為發光層50。
然後,在發光層上蒸鍍40nm厚的化合物G(50%)與LiQ(50%)作為電子傳輸層60。
最後,100nm Al作為器件陰極70。
從圖7-8所示,器件3和器件4對比可以看出,化合物1的電子傳輸性能優於對比市售的化合物G。
從圖9-圖10可計算得出:所製備的器件4在20mA/cm2的工作電流密度下,亮度7584cd/m2,電流效率達到37.9cd/A,14.3lm/W,EQE 11.1,發射綠光CIEx為0.3709,CIEy為0.5945。
所製備的器件3在20mA/cm2的工作電流密度下,亮度8555cd/m2,電流效率達到42.7cd/A,19.5lm/W,EQE 12.4,發射綠光CIEx為0.3578,CIEy為0.6061。
Claims (2)
- 一種有機電子傳輸材料,具有式(I)所述結構的化合物,
- 如申請專利範圍第1項所述的有機電子傳輸材料,為下列結構化合物:
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