Search Results - "Ko, Tsun"
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1
Prediabetes and risk of active tuberculosis: a cohort study from Northern Taiwan
Published in International journal of epidemiology (06-06-2023)“…Abstract Background Diabetes mellitus (DM) is a well-established risk factor for active tuberculosis (TB) infection. Despite the worldwide rapid increase in…”
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2
GaN-Based Light-Emitting Diode With Sputtered AlN Nucleation Layer
Published in IEEE photonics technology letters (15-02-2012)“…The crystal quality, electrical, and optical characteristics of GaN-based light-emitting diodes (LEDs) were improved using a sputtered AlN nucleation layer…”
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3
GaN-Based LEDs With a Chirped Multiquantum Barrier Structure
Published in IEEE photonics technology letters (15-09-2012)“…We report the fabrication of GaN-based blue light-emitting diodes (LEDs), which separately incorporate the three different electron blocking layers (EBLs),…”
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4
Numerical Simulation of GaN-Based LEDs With Chirped Multiquantum Barrier Structure
Published in IEEE journal of quantum electronics (01-04-2013)“…The authors report the numerical simulation of GaN-based light-emitting diodes (LEDs) with either a conventional AlGaN electron blocking layer (EBL), uniform…”
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5
Effect of Varied Undoped GaN Thickness on ESD and Optical Properties of GaN-Based LEDs
Published in IEEE photonics technology letters (15-05-2012)“…The optical property and electrostatic discharge (ESD) endurance of GaN-based light-emitting diodes (LEDs) with varied undoped GaN thickness are studied and…”
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6
Enhanced Current Spreading for GaN-Based Side-View LEDs by Adding an Metallic Stripe Across the Long Side of the Chip
Published in IEEE photonics technology letters (15-08-2012)“…The authors propose a simple method to enhance current spreading of GaN-based side-view light-emitting diodes (LEDs) by adding a metallic stripe across the…”
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7
An Examination of FORMOSAT-3/COSMIC Ionospheric Electron Density Profile: Data Quality Criteria and Comparisons with the IRI Model
Published in TAO : Terrestrial, atmospheric, and oceanic sciences (01-02-2009)“…In this article, we analyze the properties of ionospheric electron density profiling retrieved from FORMOSAT-3/COSMIC radio occultation measurements. Two…”
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8
Breast Reconstruction Use and Impact on Surgical and Oncologic Outcomes Amongst Inflammatory Breast Cancer Patients-A Systematic Review
Published in Current oncology (Toronto) (01-07-2023)“…Breast reconstruction is generally discouraged in women with inflammatory breast cancer (IBC) due to concerns with recurrence and poor long-term survival. We…”
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9
Factors Affecting the Preparation of Sr2Fe2−xMoxO6
Published in Journal of the American Ceramic Society (01-09-2003)“…Samples of Sr2Fe2−xMoxO6were prepared by solid‐state reaction in air and 5%H2–95%N2. X‐ray diffractometry was used to identify the phases and evaluate the…”
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10
structural transitions during leaching of Ni2Al3 phase in a Raney Ni-Al alloy
Published in Journal of materials science (01-12-2001)“…The microstructure transitions during leaching of a rapidly solidified Ni-Al alloy have been investigated by means of X-ray diffraction, transmission electron…”
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11
Vertical InGaN light-emitting diode with a retained patterned sapphire layer
Published in Optics express (05-11-2012)“…We present an efficient vertical InGaN light-emitting diode (LED) in which the proposed vertical LEDs were fabricated with patterned sapphire substrates (PSS)…”
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12
Vertical InGaN light-emitting diodes with a sapphire-face-up structure
Published in Optics express (02-01-2012)“…Vertical GaN-based light-emitting diodes (LEDs) were fabricated with a Si substrate using the wafer-bonding technique. Lapping and dry-etching processes were…”
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13
Structural transitions during aluminum leaching of NiAl3 phase in a Raney Ni–Al alloy
Published in Journal of materials science (01-09-2008)“…Structural transitions during aluminum leaching of the NiAl 3 phase in a Raney nickel–aluminum alloy have been investigated by X-ray diffraction, transmission…”
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14
Factors Affecting the Preparation of Sr 2 Fe 2− x Mo x O 6
Published in Journal of the American Ceramic Society (01-09-2003)“…Samples of Sr 2 Fe 2− x Mo x O 6 were prepared by solid‐state reaction in air and 5%H 2 –95%N 2 . X‐ray diffractometry was used to identify the phases and…”
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15
Factors affecting the preparation of Sr(2)Fe(2-x)Mo(x)O(6)
Published in Journal of the American Ceramic Society (01-09-2003)Get full text
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16
High-Brightness InGaN-GaN Power Flip-Chip LEDs
Published in Journal of lightwave technology (15-06-2009)“…We report the fabrication of InGaN-GaN power flip-chip (FC) light-emitting diodes (LEDs) with a roughened sapphire backside surface prepared by grinding. It…”
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17
Vertical InGaN light-emitting diode with a retained patterned sapphire layer
Published in Optics express (05-11-2012)“…We present an efficient vertical InGaN light-emitting diode (LED) in which the proposed vertical LEDs were fabricated with patterned sapphire substrates (PSS)…”
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18
Leakage Current Analysis of Nitride Based Optoelectronics by Emission Microscopy Inspection
Published in 2007 Asia-Pacific Microwave Conference (01-12-2007)“…GaN MSM photodetectors (PDs) and p-i-n photodetectors (PDs) with E-gun SiO2 passivation and plasma enhanced chemical vapor deposited (PECVD) SiO2 passivation…”
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Conference Proceeding -
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High Temperature Performance and Low Frequency Noise Characteristics of AlGaN/GaN/AlGaN Double Heterostructure Metal-Oxide-Semiconductor Heterostructure Field-Effect-Transistors with Photochemical Vapor Deposition SiO 2 Layer
Published in Japanese Journal of Applied Physics (01-04-2005)“…High quality SiO 2 films were successfully deposited onto AlGaN using photochemical vapor deposition (photo-CVD). The interface state density, D it , of…”
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