Semiconductors for terahertz photonics applications

A Krotkus - Journal of Physics D: Applied Physics, 2010‏ - iopscience.iop.org
Generation and measurement of ultrashort, subpicosecond pulses of electromagnetic
radiation with their characteristic Fourier spectra that reach far into terahertz (THz) frequency …

Tight-binding analysis of the electronic structure of dilute bismide alloys of GaP and GaAs

M Usman, CA Broderick, A Lindsay, EP O'Reilly - Physical Review B …, 2011‏ - APS
We develop an atomistic, nearest-neighbor sp 3 s* tight-binding Hamiltonian to investigate
the electronic structure of dilute bismide alloys of GaP and GaAs. Using this model, we …

The electronic band structure of GaBiAs/GaAs layers: Influence of strain and band anti-crossing

Z Batool, K Hild, TJC Hosea, X Lu, T Tiedje… - Journal of Applied …, 2012‏ - pubs.aip.org
The GaBi x As 1− x bismide III-V semiconductor system remains a relatively underexplored
alloy particularly with regards to its detailed electronic band structure. Of particular …

Optical and electrical characterization of InGaBiAs for use as a mid-infrared optoelectronic material

JP Petropoulos, Y Zhong, JMO Zide - Applied Physics Letters, 2011‏ - pubs.aip.org
In 0.53 Ga 0.47 Bi x As 1− x films were grown on InP: Fe substrates by molecular beam
epitaxy, with Bi concentrations up to x= 3.60%. Bi content in the epilayers was determined by …

GaAs(1-x)Bix: A Promising Material for Optoelectronics Applications

KK Nagaraja, YA Mityagin, MP Telenkov… - Critical Reviews in …, 2017‏ - Taylor & Francis
Bismuth alloying with GaAs has promised greater advantages in the realization of more
convenient mid and near IR photonic devices owing to its novel and unique properties. The …

Disorder and the Urbach edge in dilute bismide GaAsBi

C Gogineni, NA Riordan, SR Johnson, X Lu… - Applied Physics …, 2013‏ - pubs.aip.org
The characteristic emission from tail states below the bandgap of GaAsBi/GaAs quantum
wells is studied using photoluminescence spectroscopy over a 10–300 K temperature range …

Understanding and reducing deleterious defects in the metastable alloy GaAsBi

G Luo, S Yang, GR Jenness, Z Song, TF Kuech… - NPG Asia …, 2017‏ - nature.com
Technological applications of novel metastable materials are frequently inhibited by
abundant defects residing in these materials. Using first-principles methods, we investigate …

GaAsBi photoconductive terahertz detector sensitivity at long excitation wavelengths

A Arlauskas, P Svidovsky, K Bertulis… - Applied Physics …, 2012‏ - iopscience.iop.org
We report the terahertz frequency radiation detection using photoconductive antennas
fabricated from molecular-beam-epitaxy-grown GaAsBi. We have estimated that the detector …

Quantitative study of localization effects and recombination dynamics in GaAsBi/GaAs single quantum wells

MK Shakfa, D Kalincev, X Lu, SR Johnson… - Journal of Applied …, 2013‏ - pubs.aip.org
Localization effects on the optical properties of GaAs 1− x Bi x/GaAs single quantum wells
(SQWs), with Bi contents ranging from x= 1.1% to 6.0%, are investigated using continuous …

Surface morphology and Bi incorporation in GaSbBi (As)/GaSb films

A Duzik, JM Millunchick - Journal of crystal growth, 2014‏ - Elsevier
Abstract Several GaSbBi (As)/GaSb films were grown to investigate the effects of Bi on GaSb
surface morphology and bulk composition as a function of growth conditions. Scanning …