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1. 北京交通大学光电子技术研究所 教育部发光与光信息技术重点实验室 北京,100044
2. 国家电光源质量监督检验中心(北京) 北京,100022
纸质出版日期:2012-10-10,
收稿日期:2012-7-13,
修回日期:2012-8-20,
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孟腾飞, 何志群, 刘姝, 刘淑洁, 梁春军, 张娇. 三波段白光有机电致发光器件及其色稳定性的控制[J]. 发光学报, 2012,(10): 1095-1100
MENG Teng-fei, HE Zhi-qun, LIU Shu, LIU Shu-jie, LIANG Chun-jun, ZHANG Jiao. Towards Color Stable Three-band White Organic Light-emitting Diodes[J]. Chinese Journal of Luminescence, 2012,(10): 1095-1100
孟腾飞, 何志群, 刘姝, 刘淑洁, 梁春军, 张娇. 三波段白光有机电致发光器件及其色稳定性的控制[J]. 发光学报, 2012,(10): 1095-1100 DOI: 10.3788/fgxb20123310.1095.
MENG Teng-fei, HE Zhi-qun, LIU Shu, LIU Shu-jie, LIANG Chun-jun, ZHANG Jiao. Towards Color Stable Three-band White Organic Light-emitting Diodes[J]. Chinese Journal of Luminescence, 2012,(10): 1095-1100 DOI: 10.3788/fgxb20123310.1095.
制备并研究了基于3种小分子荧光材料的白光有机电致发光器件。发光层采用红色发光材料DCJTB掺杂绿光材料Alq
3
构成混合发光层
与OXD-7构成的蓝色发光层形成异质结的结构
并以NPB为空穴注入层。通过改变结构参数详细研究了发射光谱及其色坐标的电场依赖性。通过分析载流子注入/传输特性
控制激子的复合区域等措施得到了色坐标稳定性好、光谱丰富的高性能白光电致发光器件。经过优化的器件结构可以覆盖更大的可见光区域
当电压从9V增加到13V时
色坐标仅从CIE(
x
y
)=(0.364
0.314)偏移到CIE
(x
y)
=(0.332
0.291)
具有较好的色稳定性。
White organic light-emitting diodes based on three small molecular fluorescence materials were designed and prepared.The emitting layers consisted of a red dye
4-(dicyanomethylene)-2-tert-butyl-6-(1
1
7
7-tetra-methyljulolidin-4-yl-vinyl)-4H-pyran (DCJTB)
doped in a green layer of 8-hydroxyquinoline aluminum salt (Alq
3
)
which further formed a heterojunction with a blue layer of 2
2'-(1
3-phenylene)-bis (OXD-7).N
N'-bis-(naphthalene-1-yl)-N
N'-bis(phenyl)-benzidine (NPB) was used as a hole transport layer.Voltage dependent emission spectra and their colorimetric characteristics were manipulated using different device structures.After adjusting the carrier injection/transporting properties
the exciton recombination region was confined and the color stability was improved against the driving voltages.An improved white light-emitting device has a wide spectrum in visible range and a good color stability
its color coordinates change slightly from CIE(
x
y
)=(0.364
0.314) to CIE(
x
y
)=(0.332
0.291) when the driven voltage changes from 9.1 V to 12.9 V.
白光电致发光三波段DCJTB:Alq3掺杂激子复合色坐标稳定性
white OLEDthree-bandDCJTB:Alq3 dopingexciton recombinationcolor stability
Reineke S,Lindner F,Schwartz G,et al. White organic light-emitting diodes with fluorescent tube efficiency [J]. Nature,2009,459(7244):234-238.
Lei G,Wang L,Qiu Y.Blue phosphorescent dye as sensitizer and emitter for white organic light-emitting diodes [J]. Appl.Phys.Lett., 2004,85(22):5403-5405.
Park J H,Lee T W,Kim Y C,et al. White polymer light-emitting devices from ternary-polymer blend with concentration gradient [J]. Chem.Phys.Lett., 2005,403(4-6):293-297.
Deshpande R S,Bulovi c ' V,Forrest S R.White-light-emitting organic electroluminescent devices based on interlayer sequential energy transfer [J]. Appl.Phys.Lett.,1999,75(7):888-890.
Sun Y,Giebink N C,Kanno H,et al. Management of singlet and triplet excitons for efficient white organic light-emitting devices [J]. Nature, 2006,440(7086):908-912.
Attar H A A,Monkman A P,Tavasli M,et al. White polymeric light-emitting diode based on a fluorene polymer/Ir complex blend system [J]. Appl.Phys.Lett.,2005,86(12):121101-1-3.
Chen J X,Chen J D,Wu Z Z.White OLED for Lighting [M].Shanghai:Shanghai Jiaotong University Press,2011:24-25 (in Chinese).
Chang M Y,Wang C H,Lin S C,et al. High-brightness,high-color-purity,white organic light-emitting diodes featuring multiple emission layers [J]. J.Appl.Phys.,2009,105(6):064318-1-6.
Yang S H,Liu M H.Stable and highly bright white organic light-emitting diode based on 4,4',4″-tris(N-3-methylphenyl-N-phenyl-amino)-triphenylamine [J]. J.Appl.Phys., 2006,100(8):083111-1-4.
Yu L Z,Jiang X Y,Zhang Z L,et al. Investigation of Frster-type energy transfer in organic light-emitting devices with 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethy ljulolidin-4-yl-vinyl)-4H-pyran doped cohost emitting layer [J]. J.Appl.Phys.,2009,105(1):013105-1-4.
Mu L,He Z,Kong X,et al.Towards color stable blue primary for displays:Suppress field-dependent color change in a multilayered electroluminescent device [J]. J.Disp.Technol.,2011,7(2):96-104.
Hou L D,Duan L,Qiao J,et al. Efficient single layer solution-processed blue-emitting electrophosphorescent devices based on a small-molecule host [J]. Appl.Phys.Lett., 2008,92(26):263301-1-3.
Wang Y M,Teng F,Xu Z,et al. Trap effect of an ultrathin DCJTB layer in organic light-emitting diodes [J]. Materials Chemistry and Physics,2005,92(2-3):291-294.
Park Y S,Kang J W,Kang D M,et al. Efficient,color stable white organic light-emitting diode based on high energy level yellowish-green dopants [J]. Advanced Materials, 2008,20(10):1957-1961.
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