| 载流子平衡的低压高效有机白光器件 |
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| 引用本文： | 委福祥.载流子平衡的低压高效有机白光器件[J].上海电力学院学报,2010(3). |
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| 作者姓名： | 委福祥 |
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| 作者单位： | 中国矿业大学材料科学与工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(902020346、0477014、60577041); 中国矿业大学校青年科研基金资助项目(2007A051) |
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| 摘 要： | 研究了结构为ITO/m-MTDATA:x%4F-TCNQ/NPB/TBADN:EBDP:DCJTB/Bphen:Liq/LiF/Al的有机白光电致发光器件(WOLED)。分别在ITO与NPB间加入高迁移率的m-MTDATA:4F-TCNQ来增强器件的空穴注入,在阴极和发光层间加入高迁移率的Bphen:Liq层增强器件的电子注入,降低驱动电压,提高器件效率。同时,由于注入的电子和空穴数量偏离平衡,器件的效率也会受到影响。实验中,通过调节4F-TCNQ的掺杂浓度来调控空穴的注入和传输,使载流子达到高度平衡。器件的最大电流效率和流明效率分别达到了9.3cd/A和4.6 lm/W。
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| 关 键 词： | 载流子 平衡 低压 |
High efficiency WOLEDs with low-voltage and high carriers balance |
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| WEI Fu-xiang.High efficiency WOLEDs with low-voltage and high carriers balance[J].Journal of Shanghai University of Electric Power,2010(3). |
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| Authors: | WEI Fu-xiang |
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| Affiliation: | China University of Mining , Technology,Institute of Materials Science , Engineering,Xuzhou 221116,China, |
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| Abstract: | White organic light emitting devices(OLEDs) with the structure of ITO/m-MTDATA:x%4F-TCNQ/NPB/TBADN:EBDP:DCJTB/Bphen:Liq/LiF/Al are demonstrated.A p-doping transport layer that includes 4F-TCNQ doped into m-MTDATA is used as hole transporting layer(HTL) and an n-doping transport layer comprised of Liq doped into Bphen is used as electron transporting layer(ETL) to lower cathode barrier and facilitate carrier injection.An effective carrier balance(the number of holes is equal to the number of electrons) betwe... |
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| Keywords: | white organic light emitting devices(WOLED) carriers balance low-voltage |
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