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首页> 外文期刊>Applied Surface Science >Component regulation and crystallization mechanism of CsPbBr_3/Cs_4PbBr_6 perovskite composite quantum dots-embedded borosilicate glass for light emitting application
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Component regulation and crystallization mechanism of CsPbBr_3/Cs_4PbBr_6 perovskite composite quantum dots-embedded borosilicate glass for light emitting application

机译：发光应用CsPbBr_3 / Cs_4PbBr_6钙钛矿复合量子点嵌入式硼硅酸盐玻璃的成分调节和结晶机理

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摘要

Cesium lead bromide CsPbBr3/Cs4PbBr6 perovskite composite QDs-embedded borosilicate glass (QDs@glass) have been prepared by using the conventional melting-quenching and heat-treatment technique. The effect of raw components and melting condition on the crystallization process, phase transition and crystal growth of CsPbBr3/Cs4PbBr6 QDs in the glass matrix were discussed in details. The formation of Cs4PbBr6 in glass has a significant impact on the optical properties of CsPbBr3 QDs. Excellent QDs@glass with high photoluminescence quantum yield (PLQY) of similar to 58% was achieved by optimizing the raw components and melting condition. The obtained QDs@glass shows outstanding thermal stability, photostability and water resistance stability. The PL intensity of QDs@glass remains 80% of the original one after being stored in a chamber with high-temperature and high-humidity (85 degrees C/RH 85%) for 70 h, and shows lithe decrease (2%) after being soaked into deionized water for 70 h. The white LED fabricated by using the as-synthesized green QDs@glass powder and red K2SiF6: Mn4+ phosphor on the surface of a blue LED chip displays luminous efficiency of 25 lm/W with CIE coordinates of (0.3328, 0.3442) at 100 mA and exhibits a wide color gamut (130% of the National Television System Committee standard).
机译：溴化铯铯CsPbBr3 / Cs4PbBr6钙钛矿复合材料嵌入QDs的硼硅酸盐玻璃（QDs @ glass）是通过使用常规的熔融淬火和热处理技术制备的。详细讨论了原料组分和熔融条件对玻璃基体中CsPbBr3 / Cs4PbBr6 QDs的结晶过程，相变和晶体生长的影响。玻璃中Cs4PbBr6的形成对CsPbBr3 QD的光学性能有重要影响。通过优化原材料和熔化条件，获得了具有高达58％的高光致发光量子产率（PLQY）的优质QDs @玻璃。所获得的QDs @玻璃具有优异的热稳定性，光稳定性和耐水性稳定性。 QDs @ glass的PL强度在高温高湿（85摄氏度/相对湿度85％）的室内储存70小时后，其PL强度仍为原始玻璃的80％，并在其显示出降低后的线性下降（2％）被浸泡在去离子水中70小时。在蓝色LED芯片的表面上使用合成的绿色QDs @玻璃粉和红色K2SiF6：Mn4 +荧光粉制成的白色LED在100 mA电流下的CIE坐标为（0.3328，0.3442），发光效率为25 lm / W。展示了宽广的色域（占国家电视系统委员会标准的130％）。

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  • 来源
    《Applied Surface Science》 |2020年第may15期|145655.1-145655.9|共9页
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  • 作者单位

    Fudan Univ Inst Future Lighting Acad Engn & Technol Shanghai 200433 Peoples R China|Shanghai Inst Technol Shanghai 201418 Peoples R China;

    Shanghai Inst Technol Shanghai 201418 Peoples R China;

    Fudan Univ Inst Elect Light Sources Minist Educ Engn Res Ctr Adv Lighting Technol Shanghai 200433 Peoples R China;

    Fudan Univ Inst Future Lighting Acad Engn & Technol Shanghai 200433 Peoples R China;

    Shanghai Inst Technol Shanghai 201418 Peoples R China|Wenzhou Univ Inst New Mat & Ind Technol Wenzhou 325024 Peoples R China;

    Fudan Univ Inst Future Lighting Acad Engn & Technol Shanghai 200433 Peoples R China|Fudan Univ Inst Elect Light Sources Minist Educ Engn Res Ctr Adv Lighting Technol Shanghai 200433 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Cesium lead bromide; Quantum dots; Borosilicate glass; White LED; Display;

    机译：溴化铯量子点;硼硅酸盐玻璃;白光LED;显示;

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