Two-step photon up-conversion solar cells

Shigeo Asahi, Haruyuki Teranishi, Kazuki Kusaki, +2

Nature Communications

Two-step photon absorption in InAs/GaAs quantum-dot superlattice solar cells

Tomoyuki Kada, Shigeo Asahi, Toshiyuki Kaizu, +5

Physical Review B

Ii-vi SemiconductorPhotonicsPhotoluminescenceEngineeringPhysics +10

Suppression of thermal carrier escape and efficient photo-carrier generation by two-step photon absorption in InAs quantum dot intermediate-band solar cells using a dot-in-well structure

Shigeo Asahi, Haruyuki Teranishi, N. Kasamatsu, +3

Journal of Applied Physics

PhotonicsElectrical EngineeringPhotoluminescenceEngineeringPhysics +12

Infrared photodetector sensitized by InAs quantum dots embedded near an Al0.3Ga0.7As/GaAs heterointerface

Takahiko Murata, Shigeo Asahi, S. Sanguinetti, +1

Scientific Reports

Saturable Two-Step Photocurrent Generation in Intermediate-Band Solar Cells Including InAs Quantum Dots Embedded in Al_0.3Ga_0.7/GaAs Quantum Wells

Shigeo Asahi, Haruyuki Teranishi, Naofumi Kasamatsu, +3

IEEE Journal of Photovoltaics

Intersubband Excitation IntensityEngineeringOptoelectronic DevicesPhotovoltaicsPhotocurrent Saturation +17

Efficient two-step photocarrier generation in bias-controlled InAs/GaAs quantum dot superlattice intermediate-band solar cells

Tomoyuki Kada, Shigeo Asahi, Toshiyuki Kaizu, +4

Scientific Reports

Increasing conversion efficiency of two-step photon up-conversion solar cell with a voltage booster hetero-interface

Shigeo Asahi, Kazuki Kusaki, Yukihiro Harada, +1

Scientific Reports

High Conversion EfficiencyPhotonicsElectrical EngineeringVoltage Booster Hetero-interfaceEngineering +13

Hot-carrier generation and extraction in InAs/GaAs quantum dot superlattice solar cells

Yukihiro Harada, Naoto Iwata, Shigeo Asahi, +1

Semiconductor Science and Technology

Comparison of Electron and Hole Mobilities in Multiple-Quantum-Well Solar Cells Using a Time-of-Flight Technique

Kasidit Toprasertpong, Taizo Tanibuchi, Hiromasa Fujii, +6

IEEE Journal of Photovoltaics

Wide-bandgap SemiconductorCategoryquantum ElectronicsEngineeringSemiconductor MaterialsHole Transport +18

Adiabatic two-step photoexcitation effects in intermediate-band solar cells with quantum dot-in-well structure

Shigeo Asahi, Toshiyuki Kaizu, Takashi Kita

Scientific Reports