Journal article
Solution-Synthesized High-Mobility Tellurium Nanoflakes for Short-Wave Infrared Photodetectors
M Amani, C Tan, G Zhang, C Zhao, J Bullock, X Song, H Kim, VR Shrestha, Y Gao, KB Crozier, M Scott, A Javey
ACS Nano | AMER CHEMICAL SOC | Published : 2018
Abstract
Two-dimensional (2D) materials, particularly black phosphorus (bP), have demonstrated themselves to be excellent candidates for high-performance infrared photodetectors and transistors. However, high-quality bP can be obtained only via mechanical exfoliation from high-temperature- and high-pressure-grown bulk crystals and degrades rapidly when exposed to ambient conditions. Here, we report solution-synthesized and air-stable quasi-2D tellurium (Te) nanoflakes for short-wave infrared (SWIR) photodetectors. We perform comprehensive optical characterization via polarization-resolved transmission and reflection measurements and report the absorbance and complex refractive index of Te crystals. I..
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Grants
Awarded by U.S. Department of Energy
Funding Acknowledgements
Device fabrication and measurements were supported by the Defense Advanced Research Projects Agency under contract no. HR0011-16-1-0004. Synthesis work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, under contract no. DE-AC02-05CH11231 within the Electronic Materials Program (KC1201). Work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.