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首页> 外文期刊>Advanced Functional Materials >Resonant-Enhanced Full-Color Emission of Quantum-Dot- Based Display Technology Using a Pulsed Spray Method
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Resonant-Enhanced Full-Color Emission of Quantum-Dot- Based Display Technology Using a Pulsed Spray Method

机译：脉冲喷涂法基于量子点的显示技术的共振增强全色发射

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摘要

Colloidal quantum-dot light-emitting diodes (QDLEDs) with the HfO_2/SiO_2-distributed Bragg reflector (DBR) structure are fabricated using a pulsed spray coating method. Pixelated RGB arrays, 2-in. wafer-scale white light emission, and an integrated small footprint white light device are demonstrated. The experimental results show that the intensity of red, green, and blue (RGB) emission exhibited considerable enhancement because of the high reflectivity in the UV region by the DBR structure, which subsequently increases the use in the UV optical pumping of RGB QDs. A pulsed spray coating method is crucial in providing uniform RGB layers, and the polydimethylsi-loxane (PDMS) film is used as the interface layer between each RGB color to avoid cross-contamination and self-assembly of QDs. Furthermore, the chromaticity coordinates of QDLEDs with the DBR structure remain constant under various pumping powers in the large area sample, whereas a larger shift toward high color temperatures is observed in the integrated device. The resulting color gamut of the proposed QDLEDs covers an area 1.2 times larger than that of the NTSC standard, which is favorable for the next generation of high-quality display technology.
机译：采用脉冲喷涂技术制备了具有HfO_2 / SiO_2分布的布拉格反射器（DBR）结构的胶体量子点发光二极管（QDLED）。 2英寸像素化RGB阵列演示了晶圆级白光发射以及集成的小尺寸白光设备。实验结果表明，由于DBR结构在UV区域具有高反射率，因此红色，绿色和蓝色（RGB）发射的强度显示出显着增强，这随后增加了在RGB QD的UV光学泵浦中的使用。脉冲喷涂方法对于提供均匀的RGB层至关重要，并且将聚二甲基硅氧烷（PDMS）膜用作每种RGB颜色之间的界面层，以避免QD的交叉污染和自组装。此外，在大面积样品中，具有DBR结构的QDLED的色度坐标在各种泵浦功率下保持恒定，而在集成器件中观察到向高色温的较大偏移。所提出的QDLED的色域覆盖面积是NTSC标准的1.2倍，这对于下一代高质量显示技术是有利的。

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  • 来源
    《Advanced Functional Materials》 |2012年第24期|5138-5143|共6页
  • 作者

    Kuo-Ju Chen; Hsin-Chu Chen; Kai-An Tsai; Chien-Chung Lin; Hsin-Han Tsai; Shih-Hsuan Chien; Bo-Siao Cheng; Yung-Jung Hsu; Min-Hsiung Shih; Chih-Hao Tsai; His-Hsin Shih; Hao-Chung Kuo;

  • 作者单位

    Department of Photonic &. Institute of Electro-Optical Engineering National Chiao Tung University Hsinchu 30010, Taiwan;

    Department of Photonic &. Institute of Electro-Optical Engineering National Chiao Tung University Hsinchu 30010, Taiwan;

    Department of Materials Science and Engineering National Chiao Tung University 1001 University Road, Hsinchu 30010, Taiwan;

    Institute of Photonic System College of Photonics National Chiao Tung University No.301, Caofa 3rd Rd., Guiren Dist., Tainan City 71150, Taiwan;

    Department of Photonic &. Institute of Electro-Optical Engineering National Chiao Tung University Hsinchu 30010, Taiwan;

    Department of Photonic &. Institute of Electro-Optical Engineering National Chiao Tung University Hsinchu 30010, Taiwan;

    Department of Photonic &. Institute of Electro-Optical Engineering National Chiao Tung University Hsinchu 30010, Taiwan;

    Department of Materials Science and Engineering National Chiao Tung University 1001 University Road, Hsinchu 30010, Taiwan;

    Research Center for Applied Sciences Academia Sinica 128 Academia Rd., Sec. 2 Nankang, Taipei 115, Taiwan;

    Chi Lin Optoelectronics Co., Ltd, Tainan, Taiwan;

    Chi Lin Optoelectronics Co., Ltd, Tainan, Taiwan;

    Department of Photonic &. Institute of Electro-Optical Engineering National Chiao Tung University Hsinchu 30010, Taiwan;

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