单层
等离子体子
材料科学
半导体
光电子学
光致发光
纳米技术
平版印刷术
作者
Abhay Anand V S,Mihir Kumar Sahoo,Faiha Mujeeb,Abin Varghese,Subhabrata Dhar,Saurabh Lodha,Anshuman Kumar
标识
DOI:10.1021/acsami.3c11564
摘要
Two-dimensional semiconductors such as monolayer MoS2 have attracted considerable attention owing to their exceptional electronic and optical characteristics. However, their practical application has been hindered by the limited light absorption resulting from atomically thin thickness and low quantum yield. A highly effective approach to address these limitations is by integrating subwavelength plasmonic nanostructures with monolayer semiconductors. In this study, we employed electron beam lithography and nanoelectroplating techniques to develop a gold nanodisc (AuND) array plasmonic platform. Monolayer MoS2 transferred on top of the AuND array yields up to 150-fold photoluminescence enhancement compared to a gold film without normalization with respect to plasmonic hot spots. In addition, the unique protocol of nanoelectroplating helps to get flat-top cylindrical discs which enable less tear during the delicate wet transfer of monolayer MoS2. We explain our experimental findings based on electromagnetic simulations.
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