TY - GEN
T1 - Monte Carlo Simulation of Ultrafast Carrier Relaxation in Type I and Type II InAs-based Quantum Wells
AU - Baranowski, Izak
AU - Zou, Yongjie
AU - Esmaielpour, Hamidreza
AU - Sellers, Ian
AU - Vasileska, Dragica
AU - Goodnick, Stephen M.
N1 - Publisher Copyright: © 2023 SPIE.
PY - 2023
Y1 - 2023
N2 - The ultrashort time scale carrier dynamics of photoexcited carriers in semiconductor nanostructures is critical in controlling energy loss processes, which is necessary to realize advanced concept photovoltaic devices based on concepts such as hot carrier extraction. Here, we compare ensemble Monte Carlo (EMC) simulation of carrier dynamics in semiconductor multi-quantum well (MQW) structures with continuous wave photoluminescence studies performed in type I and type II InGaAs quantum wells. We compare the effects of including nonequilibrium phonon effects as well as the inclusion of intervalley scattering in the EMC simulations on the simulated carrier distribution functions in comparison with the PL studies. EMC analysis shows that reduced carrier cooling is predominantly due to nonequilibrium LO phonons. For type II systems, additional effects due to real space transfer and delocalization of the photoexcited holes occur.
AB - The ultrashort time scale carrier dynamics of photoexcited carriers in semiconductor nanostructures is critical in controlling energy loss processes, which is necessary to realize advanced concept photovoltaic devices based on concepts such as hot carrier extraction. Here, we compare ensemble Monte Carlo (EMC) simulation of carrier dynamics in semiconductor multi-quantum well (MQW) structures with continuous wave photoluminescence studies performed in type I and type II InGaAs quantum wells. We compare the effects of including nonequilibrium phonon effects as well as the inclusion of intervalley scattering in the EMC simulations on the simulated carrier distribution functions in comparison with the PL studies. EMC analysis shows that reduced carrier cooling is predominantly due to nonequilibrium LO phonons. For type II systems, additional effects due to real space transfer and delocalization of the photoexcited holes occur.
KW - Ensemble Monte Carlo
KW - Hot-carrier solar cell
KW - LO phonon bottleneck
KW - Type I
KW - Type II heterostructures
KW - multi-quantum well
KW - ultrafast carrier relaxation
UR - http://www.scopus.com/inward/record.url?scp=85159852976&partnerID=8YFLogxK
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U2 - https://doi.org/10.1117/12.2656991
DO - https://doi.org/10.1117/12.2656991
M3 - Conference contribution
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XII
A2 - Freundlich, Alexandre
A2 - Collin, Stephane
A2 - Hinzer, Karin
PB - SPIE
T2 - Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XII 2023
Y2 - 30 January 2023 through 1 February 2023
ER -