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    Near-infrared lead chalcogenide quantum dots: Synthesis and applications in light emitting diodes
    Haochen Liu(刘皓宸), Huaying Zhong(钟华英), Fankai Zheng(郑凡凯), Yue Xie(谢阅), Depeng Li(李德鹏), Dan Wu(吴丹), Ziming Zhou(周子明), Xiao-Wei Sun(孙小卫), Kai Wang(王恺)
    Chin. Phys. B, 2019, 28 (12): 128504.   DOI: 10.1088/1674-1056/ab50fa
    Abstract863)   HTML    PDF (6359KB)(549)      
    This paper reviews the recent progress in the synthesis of near-infrared (NIR) lead chalcogenide (PbX; PbX={PbS}, PbSe, PbTe) quantum dots (QDs) and their applications in NIR QDs based light emitting diodes (NIR-QLEDs). It summarizes the strategies of how to synthesize high efficiency PbX QDs and how to realize high performance PbX based NIR-QLEDs.
    InP quantum dots-based electroluminescent devices
    Qianqian Wu(吴倩倩), Fan Cao(曹璠), Lingmei Kong(孔令媚), Xuyong Yang(杨绪勇)
    Chin. Phys. B, 2019, 28 (11): 118103.   DOI: 10.1088/1674-1056/ab4cdb
    Abstract683)   HTML    PDF (4160KB)(326)      
    Indium phosphide (InP) quantum dots (QDs) have shown great potential to replace the widely applied toxic cadmium-containing and lead perovskite QDs due to their similar emission wavelength range and emission peak width but without intrinsic toxicity. Recently, electrically driven red and green InP-based quantum-dot light-emitting diodes (QLEDs) have achieved great progress in external quantum efficiency (EQE), reaching up to 12.2% and 6.3%, respectively. Despite the relatively poor device performance comparing with cadmium selenide (CdSe)-and perovskite-based QLEDs, these encouraging facts with unique environmental friendliness and solution-processability foreshadow the enormous potential of InP-based QLEDs for energy-efficient, high-color-quality thin-film display and solid-state lighting applications. In this article, recent advances in the research of the InP-based QLEDs have been discussed, with the main focus on device structure selection and interface research, as well as our outlook for on-going strategies of high-efficiency InP-based QLEDs.