Optical map** of nonequilibrium charge carriers

ED Guarin Castro, A Pfenning… - The Journal of …, 2021 - ACS Publications
We investigate the energy relaxation segmentation in a resonant tunneling heterostructure
by assessing the optical and transport dynamics of nonequilibrium charge carriers. The …

Mid-infrared GaSb-based resonant tunneling diode photodetectors for gas sensing applications

F Rothmayr, A Pfenning, C Kistner, J Koeth… - Applied Physics …, 2018 - pubs.aip.org
We present resonant tunneling diode-photodetectors (RTD-PDs) with GaAs 0.15 Sb
0.85/AlAs 0.1 Sb 0.9 double barrier structures combined with an additional quaternary Ga …

Surface passivation in c-Si solar cells via a double-barrier quantum-well structure for ameliorated performance

MQ Khokhar, J Kim, Z Cui, S Jeong, S Kim… - Applied Surface …, 2023 - Elsevier
Modern solar cell technology suffers low surface passivation, high recombination losses at
the interface, and dopant diffusion losses that limit solar cell's efficiency. Therefore, a double …

[HTML][HTML] Resonant tunneling of electrons in AlSb/GaInAsSb double barrier quantum wells

ED Guarin Castro, F Rothmayr, S Krüger, G Knebl… - AIP Advances, 2020 - pubs.aip.org
We have studied the optical and electronic transport properties of n-type AlSb/GaInAsSb
double barrier quantum well resonant tunneling diodes (RTDs). The RTDs were grown by …

[HTML][HTML] Resonant tunneling and multiple negative differential conductance features in long wavelength interband cascade infrared photodetectors

L Lei, L Li, W Huang, JA Massengale, H Ye… - Applied Physics …, 2017 - pubs.aip.org
We report on an investigation of multiple negative differential conductance (NDC) features in
long wavelength interband cascade infrared photodetectors (ICIPs) at and above 300 K …

p‐Type Doped AlAsSb/GaSb Resonant Tunneling Diode Photodetector for the Mid‐Infrared Spectral Region

A Pfenning, F Hartmann, R Weih… - Advanced Optical …, 2018 - Wiley Online Library
Mid‐infrared (MIR) resonant tunneling diode (RTD) photodetectors based on ap‐type doped
AlAsSb/GaSb double‐barrier quantum well (DBQW) are proposed and investigated for their …

GaSb/AlAsSb resonant tunneling diodes with GaAsSb emitter prewells

A Pfenning, G Knebl, F Hartmann, R Weih… - Applied Physics …, 2017 - pubs.aip.org
We investigate the electronic transport properties of GaSb/AlAsSb double barrier resonant
tunneling diodes with pseudomorphically grown ternary GaAs x Sb 1-x emitter prewells over …

Determination of carrier density and dynamics via magnetoelectroluminescence spectroscopy in resonant-tunneling diodes

ER Cardozo De Oliveira, A Naranjo, A Pfenning… - Physical Review …, 2021 - APS
We study the magneto-transport and magnetoelectroluminescence properties of purely n-
doped Ga As/Al 0.6 Ga 0.4 As resonant-tunneling diodes with an In 0.15 Ga 0.85 As …

Lingering times at resonance: The case of Sb-based tunneling devices

EDG Castro, A Pfenning, F Hartmann… - ar**, and drifting
processes rule the semiconductor heterostructures' response to external drives when charge …

Resonant tunneling diodes: mid-infrared sensing at room temperature

F Rothmayr, ED Guarin Castro, F Hartmann, G Knebl… - Nanomaterials, 2022 - mdpi.com
Resonant tunneling diode photodetectors appear to be promising architectures with a
simple design for mid-infrared sensing operations at room temperature. We fabricated …