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利用有效電荷產生層Liq/Al/HAT-CN的疊層有機白光器件中弱微腔效應的研究

Weak microcavity effect in tandem white organic light-emitting diodes employing an effective charge-generation layer of Liq/Al/HAT-CN

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摘要

本文使用電荷產生層Liq/Al/HAT-CN制備了藍黃互補的疊層有機白光器件。通過比較疊層雙色器件在相同電流密度下的發光光譜、亮度及電壓, 闡明了電荷產生層電荷產生及注入過程, 并進一步研究了雙層結構Liq/Al。在10 mA/cm2電流密度下, 疊層白光器件的工作電壓為83 V, 亮度為746 cd/m2, 分別為藍光單節器件(42 V, 315 cd/m2)與黃光單節器件(42 V, 426 cd/m2)之和, 證明了電荷產生層的有效性。當電流密度為240 mA/cm2時, 疊層白光器件獲得最高亮度11 420 cd/m2, 在1 000 cd/m2的亮度下, 電流效率為72 cd/A, 功率效率為26 lm/W。驅動電流密度從10 mA/cm2增加到30 mA/cm2時, 藍光成分比例僅增加5%, 證明器件發光性能穩定。針對疊層器件中存在的弱微腔效應, 根據微腔理論, 通過光學模擬計算進行了深入研究, 模擬結果與實際光譜高度吻合, 說明了光學模擬計算的準確性。

Abstract

A charge generation layer(CGL) of Liq/Al/HAT-CN is used to fabricate the blue-yellow complementary tandem white organic light-emitting device. A group of dual-color devices are used to illustrate the working mechanism of CGL, and Liq/Al structure in the CGL is further studied. Under the current density of 10 mA/cm2, the operating voltage(8.3 V) and luminance(746 cd/m2) of the tandem device are both approximately the sum of those of blue device(42 V, 315 cd/m2) and yellow device(42 V, 426 cd/m2), respectively, confirming that the charge generating layer is effective. The maximum brightness of 11 420 cd/m2 is obtained at the current density of 240 mA/cm2, and the current efficiency and power efficiency are 7.2 cd/A and 2.6 lm/W under the luminance of 1 000 cd/m2, respectively. When driving current density increases from 10 mA/cm2 to 30 mA/cm2, the ratio of blue light in spectra increases by 5%, which means the stable performance of device. In view of the weak microcavity effect existing in the tandem device, we conducted in-depth research by optical simulation based on the microcavity theory. The simulation results are highly consistent with the actual spectra, demonstrating the accuracy of optical simulation calculation.

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補充資料

中圖分類號:TN383+.1;TN312+.8

DOI:10.3788/co.20191202.0382

所屬欄目:原創文章

基金項目:國家自然科學基金項目(No.61605049, No.11674111)

收稿日期:2018-06-11

修改稿日期:2018-07-13

網絡出版日期:--

作者單位    點擊查看

喻 葉:華僑大學 信息科學與工程學院, 福建 廈門 361021
林雯嫣:華僑大學 信息科學與工程學院, 福建 廈門 361021
彭雪康:華僑大學 信息科學與工程學院, 福建 廈門 361021
金 玉:華僑大學 信息科學與工程學院, 福建 廈門 361021
吳志軍:華僑大學 信息科學與工程學院, 福建 廈門 361021
陳 燕:華僑大學 信息科學與工程學院, 福建 廈門 361021

聯系人作者:聯系作者([email protected])

備注:YU Ye(1995—), female, Huai′an, Jiangsu, Master′s Degree Student, primarily engaged in OLED research.

【1】FURNO M,MEERHEIM R,HOFMANN S,et al.. Efficiency and rate of spontaneous emission in organic electroluminescent devices[J]. Physical Review B,2012,85(11): 115205.

【2】KIDO J,HONGAWA K,OKUYAMA K,et al.. White light-emitting organic electroluminescent devices using the poly(N-vinylcarbazole) emitter layer doped with three fluorescent dyes[J]. Applied Physics Letters,1994,64(7): 815-817.

【3】REINEKE S,LINDNER F,SCHWARTZ G,et al.. White organic light-emitting diodes with fluorescent tube efficiency[J]. Nature,2009,459(7244): 234-238.

【4】WANG Q,DING J Q,MA D G,et al.. Harvesting excitons via two parallel channels for efficient white organic LEDs with nearly 100% internal quantum efficiency: fabrication and emission-mechanism analysis[J]. Advanced Functional Materials,2009,19(1): 84-95.

【5】LI Y,XU K,WEN X M,et al.. High general and special color rendering index white organic light-emitting device with bipolar homojunction emitting layers[J]. Organic Electronics,2013,14(8): 1946-1951.

【6】CHIBA T,PU Y J,KIDO J. Organic Light-emitting Devices with Tandem Structure[M]. Photoluminescent Materials and Electroluminescent Devices. Cham: Springer,2017: 357-373.

【7】劉新輝,楊健君,于軍勝.空穴阻擋中間層的加入對WOLEDs光譜穩定性的提高[J].發光學報,2015,36(10): 1145-1149.
LIU X H,YANG J J,YU J SH. Enhancement of WOLEDs spectral stability by adding hole-blocking interlayer[J]. Chinese Journal of Luminescence,2015,36(10): 1145-1149.(in Chinese)

【8】PARK J W,SHIN D C,PARK S H. Large-area OLED lightings and their applications[J]. Semiconductor Science and Technology,2011,26(3): 034002.

【9】CHEN P,XUE Q,XIE W F,et al.. Influence of interlayer on the performance of stacked white organic light-emitting devices[J]. Applied Physics Letters,2009,95(12): 123307.

【10】BAO Q Y,YANG J P,TANG J X,et al.. Interfacial electronic structures of WO3-based intermediate connectors in tandem organic light-emitting diodes[J]. Organic Electronics,2010,11(9): 1578-1583.

【11】TSUTSUI T,TERAI M. Electric field-assisted bipolar charge spouting in organic thin-film diodes[J]. Applied Physics Letters,2004,84(3): 440-442.

【12】LIAO L S,SLUSAREK W K,HATWAR T K,et al.. Tandem organic light-emitting diode using hexaazatriphenylene hexacarbonitrile in the intermediate connector[J]. Advanced Materials,2008,20(2): 324-329.

【13】LIU J,WANG J,HUANG S J,et al.. A highly efficient, transparent and stable charge generation unit based on a p-doped monolayer[J]. Organic Electronics,2013,14(5): 1337-1343.

【14】SOON M P,YOON H K,YEON J Y,et al.. Insertion of an organic interlayer for hole current enhancement in inverted organic light emitting devices[J]. Applied Physics Letters,2010,97(6): 063308.

【15】ZHENG X Y,WU Y ZH,SUN R G,et al.. Efficiency improvement of organic light-emitting diodes using 8-hydroxy-quinolinato lithium as an electron injection layer[J]. Thin Solid Films,2005,478(1-2): 252-255.

【16】SEO J H,LEE S J,SEO B M,et al.. White organic light-emitting diodes showing nearly 100% internal quantum efficiency[J]. Organic Electronics,2010,11(11): 1759-1766.

【17】于瑤瑤,喻葉,林雯嫣,等.高效率N摻雜有機電致發光器件的研制[J].發光學報,2018,39(3): 315-321.
YU Y Y,YU Y,LIN W Y,et al.. Highly efficient N-doped organic light-emitting devices[J]. Chinese Journal of Luminescence,2018,39(3): 315-321.(in Chinese)

【18】BURROWS P E,KHALFIN V,GU G,et al.. Control of microcavity effects in full color stacked organic light emitting devices[J]. Applied Physics Letters,1998,73(4): 435-437.

【19】張春玉,王慶凱,秦莉,等.微腔有機電致發光器件角度依賴性的模擬與實驗驗證[J].發光學報,2015,36(4): 454-458.
ZHANG CH Y,WANG Q K,QIN L,et al.. Simulation and experimental verification for the angle dependence of the microcavity organic light emitting device[J]. Chinese Journal of Luminescence,2015,36(4): 454-458.(in Chinese)

【20】POITRAS D,KUO C C,PY C. Design of high-contrast OLEDs with microcavity effect[J]. Optics Express,2008,16(11): 8003-8015.

引用該論文

YU Ye,LIN Wen-yan,PENG Xue-kang,JIN Yu,WU Zhi-jun,CHEN Yan. Weak microcavity effect in tandem white organic light-emitting diodes employing an effective charge-generation layer of Liq/Al/HAT-CN[J]. Chinese Optics, 2019, 12(2): 382-394

喻 葉,林雯嫣,彭雪康,金 玉,吳志軍,陳 燕. 利用有效電荷產生層Liq/Al/HAT-CN的疊層有機白光器件中弱微腔效應的研究[J]. 中國光學, 2019, 12(2): 382-394

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