标题： 胶体合成具有强荧光的CsPbBr3纳米线，宽度可调至量子限制区域 显示英文标题

标题： Colloidal Synthesis of Strongly Fluorescent CsPbBr3 Nanowires with Width Tunable down to the Quantum Confinement Regime

摘要： 我们报告了通过引入短链酸（辛酸或己酸）和烷基胺（辛胺和油胺）在合成过程中合成了具有矩形截面且宽度可调的强荧光CsPbBr3钙钛矿纳米线（NWs），从20 nm（不表现出量子限制，因此在绿色波长发射）到约3 nm（在强量子限制区域，发射在蓝色波长）。低于70{\deg }C的温度促进了单分散、少数单元晶胞厚度的纳米线的形成，且没有副产物。 纳米线样品的光致发光量子产率从发射在524 nm的非限制纳米线的12%增加到发射在497 nm的5 nm直径纳米线的最大值77%，然后下降到最薄纳米线（直径约3nm）的30%，在后一样本中可能是由于溶液中的聚集所致。 显示英文摘要

摘要： We report the colloidal synthesis of strongly fluorescent CsPbBr3 perovskite nanowires (NWs) with rectangular section and with tuneable width, from 20 nm (exhibiting no quantum confinement, hence emitting in the green) down to around 3 nm (in the strong quan-tum-confinement regime, emitting in the blue), by introducing in the synthesis a short acid (octanoic acid or hexanoic acid) together with alkyl amines (octylamine and oleylamine). Temperatures below 70 {\deg}C promoted the formation of monodisperse, few unit cell thick NWs that were free from byproducts. The photoluminescence quantum yield of the NW samples went from 12% for non-confined NWs emitting at 524 nm to a maximum of 77% for the 5 nm diameter NWs emitting at 497 nm, down to 30% for the thinnest NWs (diameter ~ 3nm), in the latter sample most likely due to aggregation occurring in solution.