Investigation and modeling of photocurrent collection process in multiple quantum well solar cells

K Toprasertpong, T Inoue, Y Nakano… - Solar Energy Materials …, 2018 - Elsevier
Solar cells employing quantum wells can enhance the light absorption but suffer from the
difficulty in photocarrier extraction. Here, we analyzed the spectral response and the …

Optical design and bandgap engineering in ultrathin multiple quantum well solar cell featuring photonic nanocavity

H Meddeb, K Gehrke, M Vehse - Progress in Photovoltaics …, 2025 - Wiley Online Library
Ultrathin solar cells are efficient and captivating devices with unique technological and
scientific features in terms of minimal material consumption, fast fabrication processes, and …

Comparison of electron and hole mobilities in multiple-quantum-well solar cells using a time-of-flight technique

K Toprasertpong, T Tanibuchi, H Fujii… - IEEE Journal of …, 2015 - ieeexplore.ieee.org
Understanding of transport dynamics of both electrons and holes in quantum-structure solar
cells is essential for their structure design and performance enhancement. By applying our …

Electroluminescence-based quality characterization of quantum wells for solar cell applications

K Toprasertpong, T Inoue, A Delamarre… - Journal of Crystal …, 2017 - Elsevier
Material quality is a critical factor which determines the performance, particularly the open-
circuit voltage, of multiple quantum well (MQW) solar cells. In this study, we report an …

Photocarrier transport dynamics in InAs/GaAs quantum dot superlattice solar cells using time-of-flight spectroscopy

T Tanibuchi, T Kada, S Asahi, D Watanabe, T Kaizu… - Physical Review B, 2016 - APS
We studied time-resolved photocarrier transport through InAs/GaAs quantum dot superlattice
(QDSL) solar cells (SCs) using time-of-flight spectroscopy with an optical probe QD structure …

Comparison of effective carrier mobility between wire on well and planar superlattice using time-of-flight measurement

M Asami, K Toprasertpong, K Watanabe… - IEEE Journal of …, 2020 - ieeexplore.ieee.org
Wire on well (WoW) structure, which is formed on a vicinal substrate, has been under
consideration for a bandgap adjustor of multijunction cells. The photocurrent of a single …

Effective drift mobility approximation in multiple quantum-well solar cell

K Toprasertpong, T Inoue, K Watanabe… - Physics, Simulation …, 2016 - spiedigitallibrary.org
Multiple quantum well (MQW) solar cells have been explored as one promising next-
generation solar cells toward high conversion efficiency. However, the dynamics of …

Investigation of miniband formation and optical properties of strain-balanced InGaAs/GaAsP superlattice structure embedded in p–i–n GaAs solar cells

A Fukuyama, K Matsuochi, T Nakamura… - Japanese Journal of …, 2017 - iopscience.iop.org
To improve the superlattice (SL) solar cell performance, we carried out an accurate
estimation of transition energies and miniband widths and focused on understanding of the …

Observation of mini-band formation in the ground and high-energy electronic states of super-lattice solar cells

T Usuki, K Matsuochi, T Nakamura… - Physics, Simulation …, 2016 - spiedigitallibrary.org
Multiple Quantum wells (MQWs) have been studied as one promising material for high-
efficiency nextgeneration solar cells. However, a portion of photo-excited carriers recombine …

Carrier Transition Process of Wire-on-Well Quantum Structures Investigated by Using Photoluminescence and Photoreflectance Spectroscopies

S Komaba, N Taketa, M Asami… - 2023 28th …, 2023 - ieeexplore.ieee.org
We investigated photoexcited carrier transition in Wire-on-Well (WoW) structures using
photoluminescence and photoreflectance measurements. The observed low-temperature …