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Hybrid transparent conductive electrodes (TCEs) consisting of AlN rods with conducting filaments (CFs) and ITO films was proposed to improve the current injection, spreading effect, and optical transmittance for 365 nm p-AlGaN based LEDs, and we demonstrated their electrical and optical properties. When comparing the performance of the LEDs with proposed hybrid TCE with reference LEDs having conventional...
We fabricated under various metal doped indium tin oxide (ITO) transparent conductive electrodes (TCE) for use in near-ultraviolet (NUV) light emitting diodes (LEDs). The role of metal is to improve the transmittance especially in NUV region and current spreading of ITO. The ITO/metal (Ti, Ga, Ge, Al) TCEs (annealed at 550°C, 1 min) exhibit 90.5 ∼ 94.7% transmittance at 385 nm on the quartz substrate...
We tested the feasibility of noninvasive fat thickness measurements by using a diffuse optical method with variable source-detector pairs. A light source module composed of 770 nm low-power chip LEDs and a photodetector were used in this study. The tissue phantoms are composed of a fat and a muscle layer made with gels with appropriate absorption/scattering coefficients. The fat thickness was varied...
We tested the feasibility of noninvasive fat thickness measurements by using a diffuse optical method with variable source-detector pairs. A light source module composed of 770 nm low-power chip LEDs and a photodetector were used in this study. The tissue phantoms are composed of a fat and a muscle layer made with gels with appropriate absorption/scattering coefficients. The fat thickness was varied...
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