IMDEA Nanoscience , 28049 Madrid, Spain.
Physics Department, Lancaster University , Lancaster LA1 4YB, United Kingdom.
ACS Appl Mater Interfaces. 2018 Feb 28;10(8):6805-6809. doi: 10.1021/acsami.7b17102. Epub 2018 Feb 19.
This work explores the assembly of large-area heterostructures comprised of a film of silica-encapsulated, semiconducting colloidal quantum dots, deposited via the Langmuir-Blodgett method, sandwiched between two graphene sheets. The luminescent, electrically insulating film served as a dielectric, with the top graphene sheet patterned into an electrode and successfully used as a top gate for an underlying graphene field-effect transistor. This heterostructure paves the way for developing novel hybrid optoelectronic devices through the integration of 2D and 0D materials.
这项工作探索了通过 Langmuir-Blodgett 方法沉积的由二氧化硅封装的半导体胶体量子点薄膜组装成大面积异质结构的方法，该薄膜夹在两层石墨烯片之间。发光的电绝缘薄膜用作介电层，顶部的石墨烯片被图案化为电极，并成功用作下方石墨烯场效应晶体管的顶栅。这种异质结构为通过整合 2D 和 0D 材料来开发新型混合光电设备铺平了道路。
