In situsynthesis of high-efficiency CsPbBr3/CsPb(2)Br(5)composite nanocrystals in aqueous solution of microemulsion
In situsynthesis of high-efficiency CsPbBr3/CsPb(2)Br(5)composite nanocrystals in aqueous solution of microemulsion
复制标题
微乳液水溶液中高效CsPbBr3/CsPb(2)Br(5)复合纳米晶的原位合成
DOI：
10.1039/d0gc02059a
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发表时间：
2020
期刊：
影响因子：
9.8
通讯作者：
Wang Jing
中科院分区：
文献类型：
--
作者：
Lou Sunqi;Zhou Zhi;Gan Weijiang;Xuan Tongtong;Bao Zhen;Si Shuaichen;Cao Luyu;Li Huili;Xia Zhiguo;Qiu Jianbei;Liu Ru-Shi;Wang Jing
在这里，我们提出了微乳液法使用十二烷基苯磺酸钠和氢氟酸在水溶液中原位合成明亮的发光CsPbBr 3/CsPb 2Br 5复合纳米晶（NC）。所得到的CsPbBr 3/CsPb 2Br 5复合纳米粒子的光致发光量子产率为77.0%，半峰全宽为16.0 nm。并将CsPbBr 3/CsPb 2Br 5复合纳米晶与K2 SiF 6：Mn 4+红色荧光粉结合，制备了具有蓝光的固态背光器件。所制造的器件表现出约为Rec.2020的95.8%的宽色域。本工作提供了一种绿色、低成本、原位水相合成高质量铯铅卤化物纳米粒子的方法，为它们在固态背光器件中的实际应用提供了一条新的途径。
Here, we present the microemulsion method using sodium dodecylbenzenesulfonate and hydrofluoric acid for the in situ synthesis of brightly luminescent CsPbBr3/CsPb2Br5 composite nanocrystals (NCs) in aqueous solution. The obtained CsPbBr3/CsPb2Br5 composite NCs exhibit a photoluminescence quantum yield of 77.0% and a full width at half maximum of 16.0 nm. And solid-state back-lighting devices were fabricated by combining CsPbBr3/CsPb2Br5 composite NCs and red-emitting K2SiF6:Mn4+ phosphors with blue light. The as-fabricated device exhibits a wide color gamut of about 95.8% of the Rec. 2020. This work provides a green, low-cost, and in situ water-phase route to synthesize high-quality cesium lead halide NCs for their practical applications in solid-state back-lighting devices.