Combinatorial approaches toward patterning nanocrystals
Combinatorial approaches toward patterning nanocrystals
复制标题
纳米晶体图案化的组合方法
DOI：
10.1063/1.368542
复制
发表时间：
1998
影响因子：
3.2
通讯作者：
J. Heath
中科院分区：
文献类型：
--
作者：
T. Vossmeyer;S. Jia;E. Delonno;M. Diehl;S;Xiaogang Peng;A. Alivisatos;J. Heath
提出了一种用于产生多种类型的半导体和/或金属纳米晶体的复杂的、空间分离的图案的方案。该过程是基于光刻图案化的有机单层，含有光不稳定的保护基团，并共价键合到二氧化硅表面。该过程导致在单个基板上的空间和化学上不同的相互作用位点。纳米晶体组装仅在一种类型的位点上以高选择性发生。我们报告生产的二元，三元和四元图案的纳米晶体。我们强调和讨论的差异，分子/底物组装和分子/底物组装。最后，我们利用光致发光和吸收光谱研究了组装结构。
A scheme for generating complex, spatially separated patterns of multiple types of semiconducting and/or metallic nanocrystals is presented. The process is based on lithographic patterning of organic monolayers that contain a photolabile protection group and are covalently bound to SiO2 surfaces. The process results in spatially and chemically distinct interaction sites on a single substrate. Nanocrystal assembly occurs with a high selectivity on just one type of site. We report on the production of binary, tertiary, and quatemary patterns of nanocrystals. We highlight and discuss the differences between nanocrystal/substrate assembly and molecule/substrate assembly. Finally, we investigate the assembled structures using photoluminescence and absorption spectroscopy.