A5079561849- Semiconductor Quantum Structures and Devices
- Nanowire Synthesis and Applications
- Photoacoustic and Ultrasonic Imaging
- Bladder and Urothelial Cancer Treatments
- Quantum and electron transport phenomena
- solar cell performance optimization
- Nanoplatforms for cancer theranostics
- Cancer Research and Treatments
- Spectroscopy and Quantum Chemical Studies
- Thermography and Photoacoustic Techniques
University of Miyazaki
2023-2024
A method for measuring light absorption using photothermal deflection spectroscopy (PDS) is investigated. Typical reflectance and transmittance (R & T) measurements have low spectral resolution (SR) with standard setups. It believed that PDS solve this problem because of its high sensitivity, even at a SR. However, accurate not been obtained conventional PDS. The the sample must be considered in absorptance calculations. Various measurement methods are compared novel calculation...
A wire-on-well (WoW) structure was fabricated using InGaAs/GaAs/GaAsP superlattice device growth technology. This modifies the local concentration of carriers in quantum well and lengthens carrier lifetime to increase transport efficiency. However, reason for this remains unclear. Therefore, we investigated detailed transition properties photoluminescence (PL) photoreflectance measurements. Regarding PL spectra at 4 K, two characteristic peaks 1.39 1.34 eV were observed. Both transitions are...
We investigated photoexcited carrier transition in Wire-on-Well (WoW) structures using photoluminescence and photoreflectance measurements. The observed low-temperature peaks showed a blue shift when the excitation power was increased. This result is explained by considering recombination between quantum states of spatially separated positions wells WoW structures.