光致发光
化学
卤化物
发光
纳米线
离子
无机化学
光电子学
Crystal(编程语言)
合金
铯
纳米技术
光化学
离子交换
材料科学
有机化学
计算机科学
程序设计语言
作者
Dandan Zhang,Yiming Yang,Yehonadav Bekenstein,Yi Yu,Natalie A. Gibson,Andrew Barnabas Wong,Samuel W. Eaton,Nikolay Kornienko,Qiao Kong,Minliang Lai,A. Paul Alivisatos,Stephen R. Leone,Peidong Yang
摘要
Here, we demonstrate the successful synthesis of brightly emitting colloidal cesium lead halide (CsPbX3, X = Cl, Br, I) nanowires (NWs) with uniform diameters and tunable compositions. By using highly monodisperse CsPbBr3 NWs as templates, the NW composition can be independently controlled through anion-exchange reactions. CsPbX3 alloy NWs with a wide range of alloy compositions can be achieved with well-preserved morphology and crystal structure. The NWs are highly luminescent with photoluminescence quantum yields (PLQY) ranging from 20% to 80%. The bright photoluminescence can be tuned over nearly the entire visible spectrum. The high PLQYs together with charge transport measurements exemplify the efficient alloying of the anionic sublattice in a one-dimensional CsPbX3 system. The wires increased functionality in the form of fast photoresponse rates and the low defect density suggest CsPbX3 NWs as prospective materials for optoelectronic applications.
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