Enhanced Visibility of MoS2, MoSe2, WSe2 and Black Phosphorus: Making Optical Identification of 2D Semiconductors Easier

Autor:	Rubio-Bollinger, Gabino, Guerrero, Ruben, de Lara, David Perez, Quereda, Jorge, Vaquero-Garzon, Luis, Agraït, Nicolas, Bratschitsch, Rudolf, Castellanos-Gomez, Andres
Rok vydání:	2015
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Zdroj:	Electronics 2015, 4(4), 847-856
Druh dokumentu:	Working Paper
DOI:	10.3390/electronics4040847
Popis:	We explore the use of Si3N4/Si substrates as a substitute of the standard SiO2/Si substrates employed nowadays to fabricate nanodevices based on 2D materials. We systematically study the visibility of several 2D semiconducting materials that are attracting a great deal of interest in nanoelectronics and optoelectronics: MoS2, MoSe2, WSe2 and black phosphorus. We find that the use of Si3N4/Si substrates provides an increase of the optical contrast up to a 50%-100% and also the maximum contrast shifts towards wavelength values optimal for human eye detection, making optical identification of 2D semiconductors easier. Comment: 4 figures + 3 supp.info. figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1511.05474 Zobrazit plný text záznamu View this record from Arxiv