Phase Modulators Based on High Mobility Ambipolar ReSe2 Field-Effect Transistors

Scientific Reports
Nihar R PradhanLuis Balicas

Abstract

We fabricated ambipolar field-effect transistors (FETs) from multi-layered triclinic ReSe2, mechanically exfoliated onto a SiO2 layer grown on p-doped Si. In contrast to previous reports on thin layers (~2 to 3 layers), we extract field-effect carrier mobilities in excess of 102 cm2/Vs at room temperature in crystals with nearly ~10 atomic layers. These thicker FETs also show nearly zero threshold gate voltage for conduction and high ON to OFF current ratios when compared to the FETs built from thinner layers. We also demonstrate that it is possible to utilize this ambipolarity to fabricate logical elements or digital synthesizers. For instance, we demonstrate that one can produce simple, gate-voltage tunable phase modulators with the ability to shift the phase of the input signal by either 90° or nearly 180°. Given that it is possible to engineer these same elements with improved architectures, for example on h-BN in order to decrease the threshold gate voltage and increase the carrier mobilities, it is possible to improve their characteristics in order to engineer ultra-thin layered logic elements based on ReSe2.

References

Jan 15, 2011·Physical Review Letters·Kin Fai MakTony F Heinz
Dec 15, 2011·ACS Nano·Zongyou YinHua Zhang
Apr 10, 2013·Scientific Reports·Marcio FontanaPaola Barbara
Jun 28, 2013·Nano Letters·Saptarshi Das, Joerg Appenzeller
Oct 24, 2013·Nature Communications·Hao QiuXinran Wang
Feb 7, 2014·Nature Communications·Sefaattin TongayJunqiao Wu
Apr 3, 2014·Advanced Materials·Yen-Fu LinKazuhito Tsukagoshi
Jun 1, 2014·ACS Nano·Nihar R PradhanLuis Balicas
Mar 12, 2015·Scientific Reports·N R PradhanL Balicas
Nov 26, 2015·Nano Letters·Nihar R PradhanLuis Balicas
Jan 23, 2016·Nano Letters·Lewis HartDaniel Wolverson
May 15, 2016·Nanoscale Research Letters·Daniel Wolverson, Lewis S Hart
May 28, 2016·Nano Letters·Chris D EnglishEric Pop
Apr 18, 2017·Nano Letters·Ashish AroraRudolf Bratschitsch
Apr 28, 2017·Nanoscale·Junyoung KwonGwan-Hyoung Lee
Aug 19, 2017·Nano Letters·Amber McCrearyAngela R Hight Walker

❮ Previous
Next ❯

Citations


❮ Previous
Next ❯

Methods Mentioned

BETA
transmission electron microscopy
electron diffraction
atomic force microscopy
AFM
scanning electron microscopy

Software Mentioned

CASTEP

Related Concepts

Related Feeds

Cardiac Conduction System

The cardiac conduction system is a specialized tract of myocardial cells responsible for maintaining normal cardiac rhythm. Discover the latest research on the cardiac conduction system here.