Scalable Direct Writing of Lanthanide-Doped KMnF3 Perovskite Nanowires into Aligned Arrays with Polarized Up-Conversion Emission.
Scalable Direct Writing of Lanthanide-Doped KMnF3 Perovskite Nanowires into Aligned Arrays with Polarized Up-Conversion Emission.
复制标题
DOI：
10.1021/acs.nanolett.8b00396
复制
发表时间：
2018-04
期刊：
影响因子：
10.8
通讯作者：
Shuo Shi;Ling-Dong Sun;Yingxian Xue;Hao Dong;Ke Wu;Shize Guo;Botao Wu;Chunhua Yan
中科院分区：
文献类型：
--
作者：
Shuo Shi;Ling-Dong Sun;Yingxian Xue;Hao Dong;Ke Wu;Shize Guo;Botao Wu;Chunhua Yan
使用一维纳米和微米结构的半导体和镧系材料是有吸引力的偏振光发射研究。还讨论了具有一定偏振度的单纳米棒或各向异性纳米颗粒的上转换发射。然而，纳米颗粒的微尺度阵列，特别是排列良好的一维纳米结构以及它们的上转换偏振特性，尚未被研究。在此，我们提出了一种新的和简便的范例，用于制备镧系元素掺杂的KMnF3（KMnF3：Ln）钙钛矿纳米线，这是极化上转换发射研究的良好候选人的高度对齐的阵列。这些钙钛矿纳米线是通过KMnF3：Ln纳米立方体沿着[001]方向定向附着而形成的，其宽度为10 nm，长度为几微米。通过采用KMnF3：Ln纳米线凝胶作为纳米墨水，开发了一种直接写入方法，以获得从纳米尺度到晶片尺度的各种类型的对准图案。来自高度对准的纳米线阵列的上转换发射沿着阵列方向偏振，偏振度高达60%。利用微观纳米线阵列，这些偏振上转换发射应该在光或信息传输中提供潜在的应用。
The use of one-dimensional nano- and microstructured semiconductor and lanthanide materials is attractive for polarized-light-emission studies. Up-conversion emission from single-nanorod or anisotropic nanoparticles with a degree of polarization has also been discussed. However, microscale arrays of nanoparticles, especially well-aligned one-dimensional nanostructures as well as their up-conversion polarization characterization, have not been investigated yet. Herein, we present a novel and facile paradigm for preparing highly aligned arrays of lanthanide-doped KMnF3 (KMnF3:Ln) perovskite nanowires, which are good candidates for polarized up-conversion emission studies. These perovskite nanowires, with a width of 10 nm and length of a few micrometers, are formed through the oriented attachment of KMnF3:Ln nanocubes along the [001] direction. By the employment of KMnF3:Ln nanowire gel as nanoink, a direct-writing method is developed to obtain diverse types of aligned patterns from the nanoscale to the wafer scale. Up-conversion emissions from the highly aligned nanowire arrays are polarized along the array direction with a polarization degree up to 60%. Taking advantage of microscopic nanowire arrays, these polarized up-conversion emissions should offer potential applications in light or information transportation.