铜（Ⅰ）配合物磷光材料的发光与光电特性的研究
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摘要
有机发光二极管(OLED)在现代显示技术领域中因其不可比拟的优势而受到人们的广泛关注;同时,有机光伏(OPV)器件因成本低、工艺简单、易于制成大面积器件等诸多优点而成为一个研究热点,以期为太阳能、光学传感器和探测器等方面的利用开辟新的道路。本论文以铜(I)配合物磷光材料在OLED及OPV领域的应用为工作出发点,具体工作如下:
1、利用水热合成技术合成四种四氮杂苯并菲衍生物,即PyPhen、Dicnq、DPPz和BDPz。结果表明,由该方法所获得的产物产率高、纯度好。
2、以三苯基膦(PPh3)和二(2-二苯基膦基)苯基醚(DPEphos)为第一配体,上述四种四氮杂苯并菲衍生物及4,7-二苯基-1,10-邻菲罗啉(Bath)为第二配体,合成了十个未见报道的铜(I)配合物磷光材料。
3、采用真空镀膜工艺,利用[Cu(DPEphos)(Dicnq)]BF_4 (CuDD)为发光材料,制备出颜色可调的、高效的有机电致磷光器件。当掺杂浓度为6 %时,器件具有最大的发光效率,达11.3 cd/A;当掺杂浓度为10%时,器件最大亮度为2 322 cd m~(-2)。
4、采用真空镀膜工艺,利用了CuDD:CBP掺杂层中的来自于铜(I)配合物的黄光组分以及NPB层的蓝光组分,并且在两发光层中间夹入Bu-PBD充当调节颜色组分,开发出了白光器件。结果表明,当器件的发光层2 wt.%CuDD:CBP的厚度为10 nm、Bu-PBD为2 nm时,可获得有效的白光发射,10 V电压时色坐标为(0.33,0.36),最大亮度为2466 cd/m2,电流效率和功率效率分别为6.76 cd/A and 3.85 lm/W。
Extensive attention has been paid for organic electroluminescence (OEL) for its unique advantages in the field of modern display technique. At the mean time, organic photovoltaic (OPV) devices become a research hotspot because the devices can be made with low cost, simple for techniques, and easy for large scale, it is anticipated to develop a new way for the application of solar energy or photo-detector.
The purpose of this thesis is to develop the application of phosphorescent Cu(I) complex materials in OLED and OPV fields.
1. Some derivatives of tetraazatriphenylene (PyPhen、Dicnq、DPPz and BDPz) can be synthesized readily by utilizing hydrothermal synthetic method. Comparing with traditional technique, the technique presents effective and simple processes, much high yields of products with higher purity can be harvested.
2. Ten Cu(I) complexes were synthesized by using PPh3, DPEphos as the first ligands and four derivatives of tetraazatriphenylene, Bath as the second-ligands.
3. Tuning color electrophosphorescent device based on [Cu(DPEphos)(Dicnq)]BF_4 was fabricated by the evaporating process in vacuum. A peak efficiency of 11.3 cd A-1 at a 16.2 cd m-2 and at a 0.14 mA cm-2 and a maximum luminance of 2322 cd m-2 at 12 V bias were achieved, respectively.
4. Efficient white organic light-emitting diodes based on [Cu(DPEphos)- (Dicnq)]BF_4, in which the white emission composed of yellow emission from
1、利用水热合成技术合成四种四氮杂苯并菲衍生物,即PyPhen、Dicnq、DPPz和BDPz。结果表明,由该方法所获得的产物产率高、纯度好。
2、以三苯基膦(PPh3)和二(2-二苯基膦基)苯基醚(DPEphos)为第一配体,上述四种四氮杂苯并菲衍生物及4,7-二苯基-1,10-邻菲罗啉(Bath)为第二配体,合成了十个未见报道的铜(I)配合物磷光材料。
3、采用真空镀膜工艺,利用[Cu(DPEphos)(Dicnq)]BF_4 (CuDD)为发光材料,制备出颜色可调的、高效的有机电致磷光器件。当掺杂浓度为6 %时,器件具有最大的发光效率,达11.3 cd/A;当掺杂浓度为10%时,器件最大亮度为2 322 cd m~(-2)。
4、采用真空镀膜工艺,利用了CuDD:CBP掺杂层中的来自于铜(I)配合物的黄光组分以及NPB层的蓝光组分,并且在两发光层中间夹入Bu-PBD充当调节颜色组分,开发出了白光器件。结果表明,当器件的发光层2 wt.%CuDD:CBP的厚度为10 nm、Bu-PBD为2 nm时,可获得有效的白光发射,10 V电压时色坐标为(0.33,0.36),最大亮度为2466 cd/m2,电流效率和功率效率分别为6.76 cd/A and 3.85 lm/W。
Extensive attention has been paid for organic electroluminescence (OEL) for its unique advantages in the field of modern display technique. At the mean time, organic photovoltaic (OPV) devices become a research hotspot because the devices can be made with low cost, simple for techniques, and easy for large scale, it is anticipated to develop a new way for the application of solar energy or photo-detector.
The purpose of this thesis is to develop the application of phosphorescent Cu(I) complex materials in OLED and OPV fields.
1. Some derivatives of tetraazatriphenylene (PyPhen、Dicnq、DPPz and BDPz) can be synthesized readily by utilizing hydrothermal synthetic method. Comparing with traditional technique, the technique presents effective and simple processes, much high yields of products with higher purity can be harvested.
2. Ten Cu(I) complexes were synthesized by using PPh3, DPEphos as the first ligands and four derivatives of tetraazatriphenylene, Bath as the second-ligands.
3. Tuning color electrophosphorescent device based on [Cu(DPEphos)(Dicnq)]BF_4 was fabricated by the evaporating process in vacuum. A peak efficiency of 11.3 cd A-1 at a 16.2 cd m-2 and at a 0.14 mA cm-2 and a maximum luminance of 2322 cd m-2 at 12 V bias were achieved, respectively.
4. Efficient white organic light-emitting diodes based on [Cu(DPEphos)- (Dicnq)]BF_4, in which the white emission composed of yellow emission from
引文
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