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CdSe/ZnS量子点下转换膜的红、绿、蓝顶发射有机发光器件

尹茂军 潘腾 刘士浩 谢文法 张乐天

尹茂军, 潘腾, 刘士浩, 谢文法, 张乐天. CdSe/ZnS量子点下转换膜的红、绿、蓝顶发射有机发光器件[J]. 中国光学, 2019, 12(6): 1431-1441. doi: 10.3788/CO.20191206.1431
引用本文: 尹茂军, 潘腾, 刘士浩, 谢文法, 张乐天. CdSe/ZnS量子点下转换膜的红、绿、蓝顶发射有机发光器件[J]. 中国光学, 2019, 12(6): 1431-1441. doi: 10.3788/CO.20191206.1431
YIN Mao-jun, PAN Teng, LIU Shi-hao, XIE Wen-fa, ZHANG Le-tian. Top-emitting red, green and blue organic light-emitting devices with CdSe/ZnS quantum dots down-conversion films[J]. Chinese Optics, 2019, 12(6): 1431-1441. doi: 10.3788/CO.20191206.1431
Citation: YIN Mao-jun, PAN Teng, LIU Shi-hao, XIE Wen-fa, ZHANG Le-tian. Top-emitting red, green and blue organic light-emitting devices with CdSe/ZnS quantum dots down-conversion films[J]. Chinese Optics, 2019, 12(6): 1431-1441. doi: 10.3788/CO.20191206.1431

CdSe/ZnS量子点下转换膜的红、绿、蓝顶发射有机发光器件

doi: 10.3788/CO.20191206.1431
基金项目: 

国家自然科学基金项目 61774074

吉林省科技发展计划项目 20190101024JH

详细信息
  • 中图分类号: TN383

Top-emitting red, green and blue organic light-emitting devices with CdSe/ZnS quantum dots down-conversion films

Funds: 

National Natural Science Foundation of China 61774074

Science and Technology Development Plan of Jilin Province 20190101024JH

More Information
    Author Bio:

    YIN Mao-jun (1993—), male, Hegang, Heilongjiang, graduated with a master's degree and received a bachelor's degree from Jilin University in 2016, He is mainly engaged in research on organic light-emitting devices.E-mail:zlt@jlu.edu.cn

    ZHANG Le-tian (1977—), female, Changchun Jilin, professor, received her Ph.D.from Jilin University in 2004, She is mainly engaged in research on organic optoelectronic devices.E-mail:zlt@jlu.edu.cn

    Corresponding author: ZHANG Le-tian, E-mail:zlt@jlu.edu.cn
  • 摘要: 顶发射结构可实现100%的开口率,对高品质有机发光器件(OLED)显示具有重要意义。但目前OLED显示的传统制作方法难度较大,且器件的光谱稳定性较差。为了降低OLED显示的制作难度并进一步提高器件的光谱稳定性,本文将CdSe/ZnS量子点与聚甲基丙烯酸甲酯溶液相混合,并通过压印法制备了具有微结构阵列的红光与绿光量子点下转换膜,将其与高效顶发射蓝光OLED和彩色滤光片相结合,实现了红(R)、绿(G)、蓝(B)三色顶发射OLED。RGB器件的最大电流效率分别为3.6、21.9和10.6 cd/A,色坐标分别为(0.70,0.30)、(0.24,0.62)和(0.10,0.20)。此外,器件的光谱与色坐标几乎不随电压变化,且同时具有优良的光谱角度稳定性。这种实现OLED彩色化的方法具有制作简单、成本较低等优点,具有广阔的发展前景。
  • 图  1  红、绿、蓝顶发射器件的结构示意图

    Figure  1.  (Color online)Schematic diagram of devices R, G and B based on blue TOLED

    图  2  彩色滤光片的透过率

    Figure  2.  Transmittance of the used color filters

    图  3  红、绿、蓝器件和器件TOLED的归一化发光光谱,以及红光、绿光量子点的吸收谱

    Figure  3.  Normalized EL spectra of devices R, G, B and TOLED, and absorption(Abs.) spectra of red and green QDs

    图  4  红、绿、蓝器件的色坐标

    Figure  4.  Chromaticity coordinates of devices R, G and B

    图  5  红、绿、蓝器件和器件TOLED的电流效率-亮度特性曲线,插图为红光与绿光量子点下转换膜在紫外光照射下的照片

    Figure  5.  Current efficiency-luminance characteristics of devices R, G, B and TOLED, the insets are photographs of down-conversion films with red and green QDs under UV light

    图  6  红、绿、蓝器件和器件TOLED的电流密度-电压-亮度特性曲线

    Figure  6.  Current density-voltage-luminance characteristics of devices R, G, B and TOLED

    图  7  微结构量子点下转换膜的扫描电镜图

    Figure  7.  Scanning electron micrograph(SEM) of down-conversion film with a micro-cylindrical lens array

    图  8  红、绿、蓝器件在不同电压下的归一化发光光谱

    Figure  8.  Normalized EL spectra of devices R, G and B at different voltages

    图  9  红、绿、蓝器件在不同视角下的归一化发光光谱

    Figure  9.  Normalized EL spectra of devices R, G and B under different viewing angles

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出版历程
  • 收稿日期:  2019-01-18
  • 修回日期:  2019-03-09
  • 刊出日期:  2019-12-01

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