Strategy toward white LEDs based on vertically integrated rare earth doped Ga2O3 films

Y Huang, K Saito, T Tanaka, Q Guo - Applied Physics Letters, 2021‏ - pubs.aip.org
Monolithic and phosphor-free light-emitting diodes (LEDs) have been fabricated based on
vertically integrated Ga 2 O 3: Tm, Ga 2 O 3: Eu, and Ga 2 O 3: Er films by alternate-target …

Color-tunable light-emitting diodes based on rare earth doped gallium oxide films

Q Guo, K Saito, T Tanaka - ACS Applied Electronic Materials, 2023‏ - ACS Publications
Color-tunable light-emitting diodes (LEDs) offer a broad spectrum of applications,
encompassing augmented and virtual reality displays, indoor lighting, and architectural …

The preparation of CuO film under different annealing atmospheres and investigation of the excellent electrical and undoped tunable electroluminescence …

X Zhang, G **ang, J Zhang, Z Yue, Y Liu… - Journal of Alloys and …, 2024‏ - Elsevier
Copper oxide (CuO) film is widely used in optoelectronic devices. The CuO films were
fabricated by radio frequency (RF) magnetron sputtering and then annealed at 700° C under …

Yellow emission from vertically integrated Ga2O3 doped with Er and Eu electroluminescent film

G Deng, Y Huang, Z Chen, C Pan, K Saito… - Journal of …, 2021‏ - Elsevier
Yellow color from vertically integrated light emitting device (LED) was reported. The
multilayer structured Er and Eu doped Ga 2 O 3 films were deposited on sapphire and GaAs …

[HTML][HTML] InP-based quantum dot on-chip white LEDs with optimal circadian efficiency

J Cerpentier, B Karadza, H van Avermaet… - Optics & Laser …, 2023‏ - Elsevier
Solid-state light-emitting diodes (LEDs) are capable of reaching high visual performance,
both in terms of efficiency and color quality. The lighting industry is however increasingly …

Excitation Efficiency and Limitations of the Luminescence of Ions in

D Timmerman, B Mitchell, S Ichikawa, J Tatebayashi… - Physical Review …, 2020‏ - APS
The excitation efficiency and external luminescence quantum efficiency of trivalent Eu 3+
ions doped into gallium nitride (Ga N) is studied under optical and electrical excitation. For …

Enhanced luminescence efficiency in Eu-doped GaN superlattice structures revealed by terahertz emission spectroscopy

F Murakami, A Takeo, B Mitchell, V Dierolf… - Communications …, 2023‏ - nature.com
Abstract Eu-doped Gallium nitride (GaN) is a promising candidate for GaN-based red light-
emitting diodes, which are needed for future micro-display technologies. Introducing a …

Temporally modulated energy shuffling in highly interconnected nanosystems

B Mitchell, H Austin, D Timmerman, V Dierolf… - …, 2020‏ - degruyter.com
Advances in lighting and quantum computing will require new degrees of control over the
emission of photons, where localized defects and the quantum confinement of carriers can …

Strong enhancement of red photoluminescence from Eu doped Ga2O3 films by thermal annealing

Y Huang, K Saito, T Tanaka, Q Guo - Journal of Luminescence, 2022‏ - Elsevier
Eu doped Ga 2 O 3 thin films were prepared by pulsed laser deposition on sapphire
substrates. The influences of thermal annealing temperature as well as the annealing …

Carrier dynamics and excitation of ions in GaN

D Timmerman, B Mitchell, S Ichikawa, M Nagai… - Physical Review B, 2020‏ - APS
The carrier mobility and dynamics of nonequilibrium carriers in Eu-doped GaN have been
determined by above-band-gap, optically excited, time-resolved terahertz spectroscopy and …