First-principles calculations of bismuth induced changes in the band structure of dilute Ga–V–Bi and In–V–Bi alloys: chemical trends versus experimental data

MP Polak, P Scharoch… - … Science and Technology, 2015 - iopscience.iop.org
Bi-induced changes in the band structure of Ga–V–Bi and In–V–Bi alloys are calculated
within the density functional theory (DFT) for alloys with Bi≤ 3.7% and the observed …

[HTML][HTML] Semiconductor characterization by terahertz excitation spectroscopy

A Krotkus, I Nevinskas, R Norkus - Materials, 2023 - mdpi.com
Surfaces of semiconducting materials excited by femtosecond laser pulses emit
electromagnetic waves in the terahertz (THz) frequency range, which by definition is the 0.1 …

Temperature dependence of band gaps in dilute bismides

WM Linhart, R Kudrawiec - Semiconductor Science and …, 2018 - iopscience.iop.org
Abstract Knowledge about the temperature dependence of the fundamental band-gap
energy of semiconductors is very important and constitutes the basis for developing …

[HTML][HTML] Photovoltaic characterisation of GaAsBi/GaAs multiple quantum well devices

RD Richards, A Mellor, F Harun, JS Cheong… - Solar Energy Materials …, 2017 - Elsevier
A series of strained GaAsBi/GaAs multiple quantum well diodes are characterised to assess
the potential of GaAsBi for photovoltaic applications. The devices are compared with …

Tuning the responsible parameters for gain characteristics of the novel type-II D-QW (InGaAs) heterostructure

M Riyaj, AM Quraishi, PMZ Hasan, R Darwesh… - Materials Science in …, 2022 - Elsevier
The study made in this paper is directed towards the tuning of the parameters responsible
for the shift in optical properties of a novel type-II D-QW (double quantum well) …

[HTML][HTML] Deep-level defects in n-type GaAsBi alloys grown by molecular beam epitaxy at low temperature and their influence on optical properties

Ł Gelczuk, J Kopaczek, TBO Rockett, RD Richards… - Scientific Reports, 2017 - nature.com
Deep-level defects in n-type GaAs1− x Bi x having 0≤ x≤ 0.023 grown on GaAs by
molecular beam epitaxy at substrate temperature of 378° C have been injvestigated by deep …

8-band and 14-band kp modeling of electronic band structure and material gain in Ga (In) AsBi quantum wells grown on GaAs and InP substrates

M Gladysiewicz, R Kudrawiec, MS Wartak - Journal of Applied Physics, 2015 - pubs.aip.org
The electronic band structure and material gain have been calculated for GaAsBi/GaAs
quantum wells (QWs) with various bismuth concentrations (Bi≤ 15%) within the 8-band and …

[HTML][HTML] Electromodulation spectroscopy of highly mismatched alloys

R Kudrawiec, W Walukiewicz - Journal of Applied Physics, 2019 - pubs.aip.org
The electronic band structure of highly mismatched alloys (HMAs) was very successfully
explored using electromodulation (EM) spectroscopy, ie, photoreflectance (PR) …

[HTML][HTML] Assessing the nature of the distribution of localised states in bulk GaAsBi

T Wilson, NP Hylton, Y Harada, P Pearce… - Scientific Reports, 2018 - nature.com
A comprehensive assessment of the nature of the distribution of sub band-gap energy states
in bulk GaAsBi is presented using power and temperature dependent photoluminescence …

Metamorphic gaas/gaasbi heterostructured nanowires

F Ishikawa, Y Akamatsu, K Watanabe, F Uesugi… - Nano Letters, 2015 - ACS Publications
GaAs/GaAsBi coaxial multishell nanowires were grown by molecular beam epitaxy.
Introducing Bi results in a characteristic nanowire surface morphology with strong …