论文标题
通过软上映纳米晶超级晶格微通道制造，用于电子测量单晶结构域的电子测量
Fabrication of nanocrystal superlattice microchannels by soft-lithography for electronic measurements of single crystalline domains
论文作者
论文摘要
我们报告了一种高通量和易于实现的方法，用于制造纳米晶超晶格的微通道，尺寸为〜4千分尺^2，从而接近典型的单晶结构域的大小。通过微接合印刷，将具有显微镜尺寸的高度有序的超晶格转移到光刻图预读的微电极上，获得了定义明确的超晶格微通道。我们介绍了微分析，纳米晶体自组装和图案的分步指南，以归档大量每台设备最多330微通道，以对单晶超级晶格域中的电荷传输进行统计意义的调查。作为概念验证，我们对PBS纳米晶超晶格的微通道进行电导率和现场效应晶体管测量。我们发现，微通道超级晶格中的电动传输比传统的大规模通道的效率更高，这突出了本文中呈现的近乎单晶微通道的优势。
We report a high-throughput and easy-to-implement approach to fabricate microchannels of nanocrystal superlattices with dimensions of ~4 micrometer^2, thus approaching the size of typical single-crystalline domains. By means of microcontact printing, highly ordered superlattices with microscale dimensions are transferred onto photolithographically prepatterned microelectrodes, obtaining well-defined superlattice microchannels. We present step-by-step guidelines for microfabrication, nanocrystal self-assembly and patterning to archive large quantities of up to 330 microchannels per device for statistically meaningful investigations of charge transport in single-crystalline superlattice domains. As proof-of-concept, we perform conductivity and field-effect transistor measurements on microchannels of PbS nanocrystal superlattices. We find that the electric transport within microchannel superlattices is orders of magnitude more efficient than within conventional large-scale channels, highlighting the advantage of the near single-crystalline microchannels presented in this paper.
