Find Research Outputs

Search concepts
Selected filters
2019

A high-performance Pd nanoparticle (NP)/WO3 thin-film-based hydrogen sensor

Lee, C. & Liu, W-C., 2019 Jul 1, In : IEEE Electron Device Letters. 40, 7, p. 1194-1197 4 p., 8709960.

Research output: Contribution to journalArticle

Hydrogen
Nanoparticles
Thin films
Vacuum evaporation
Thermal evaporation
2 Citations (Scopus)

Ammonia Sensing Characteristics of a Tungsten Trioxide Thin-Film-Based Sensor

Chou, T. C., Chang, C. H., Lee, C. & Liu, W. C., 2019 Jan, In : IEEE Transactions on Electron Devices. 66, 1, p. 696-701 6 p., 8556505.

Research output: Contribution to journalArticle

Ammonia
Tungsten
Thin films
Sensors
Air

Hydrogen sensing characteristics of a metal-oxide-semiconductor diode with bimetallic catalysts and a gaox dielectric

Chen, H. Y. & Liu, W-C., 2019 Jul 1, In : IEEE Transactions on Electron Devices. 66, 7, p. 3144-3150 7 p., 8727417.

Research output: Contribution to journalArticle

Semiconductor diodes
Hydrogen
Metals
Catalysts
Adsorption

Inverter logic of AlGaAs/InGaAs enhancement/depletion-mode pseudomorphic high electron mobility transistors with virtual channel layers

Tsai, J. H., Lin, P. S., Lour, W. S. & Liu, W. C., 2019 Jan 1, In : ECS Journal of Solid State Science and Technology. 8, 10, p. Q211-Q216

Research output: Contribution to journalArticle

Open Access
Drain current
Transconductance
High electron mobility transistors
Field effect transistors
Transistors
1 Citation (Scopus)

Performance Improvement of GaN-Based Light-Emitting Diodes with a Microhole Array, 45° Sidewalls, and a SiO2 Nanoparticle/Microsphere Passivation Layer

Chang, C. H., Lee, Y. L., Wang, Z. F., Liu, R. C., Tsai, J. H. & Liu, W. C., 2019 Jan, In : IEEE Transactions on Electron Devices. 66, 1, p. 505-511 7 p., 8573125.

Research output: Contribution to journalArticle

Microspheres
Passivation
Light emitting diodes
Nanoparticles
Leakage currents
2018
8 Citations (Scopus)

Ammonia sensing characteristic of a Pt nanoparticle/aluminum-doped zinc oxide sensor

Chen, H. I., Chi, C. Y., Chen, W. C., Liu, I. P., Chang, C. H., Chou, T. C. & Liu, W. C., 2018 Aug 15, In : Sensors and Actuators, B: Chemical. 267, p. 145-154 10 p.

Research output: Contribution to journalArticle

Zinc Oxide
Zinc oxide
Aluminum
Ammonia
zinc oxides
26 Citations (Scopus)

Characteristics of a Pt/NiO thin film-based ammonia gas sensor

Chen, H. I., Hsiao, C. Y., Chen, W. C., Chang, C. H., Chou, T. C., Liu, I. P., Lin, K. W. & Liu, W. C., 2018 Mar, In : Sensors and Actuators, B: Chemical. 256, p. 962-967 6 p.

Research output: Contribution to journalArticle

Chemical sensors
Ammonia
ammonia
Thin films
sensors
7 Citations (Scopus)
Light emitting diodes
Photons
Plasma etching
Light emission
Inductively coupled plasma
2 Citations (Scopus)

Enhancement of Hydrogen Sensing Performance of a Pd Nanoparticle/Pd Film/GaOx/GaN-Based Metal-Oxide- Semiconductor Diode

Ke, B. Y. & Liu, W-C., 2018 Oct 1, In : IEEE Transactions on Electron Devices. 65, 10, p. 4577-4584 8 p., 8450052.

Research output: Contribution to journalArticle

Semiconductor diodes
Hydrogen
Metals
Nanoparticles
Air
11 Citations (Scopus)

Formaldehyde sensing characteristics of an aluminum-doped zinc oxide (AZO) thin-film-based sensor

Chi, C. Y., Chen, H. I., Chen, W. C., Chang, C. H. & Liu, W. C., 2018 Feb, In : Sensors and Actuators, B: Chemical. 255, p. 3017-3024 8 p.

Research output: Contribution to journalArticle

Zinc Oxide
Zinc oxide
formaldehyde
Aluminum
Formaldehyde
3 Citations (Scopus)

Formaldehyde sensing characteristics of a nio-based sensor decorated with Pd nanoparticles and a Pd Thin film

Chen, H. I., Hsiao, C. Y., Chen, W. C., Chang, C. H., Liu, I. P., Chou, T. C. & Liu, W. C., 2018 May, In : IEEE Transactions on Electron Devices. 65, 5, p. 1956-1961 6 p.

Research output: Contribution to journalArticle

Formaldehyde
Nanoparticles
Thin films
Chemical stability
Sensors
3 Citations (Scopus)

Hydrogen sensing performance of a Pd/HfO2/GaN metal-oxide-semiconductor (MOS) Schottky diode

Chen, H. I., Chang, C. H., Lu, H. H., Liu, I. P., Chen, W. C., Ke, B. Y. & Liu, W. C., 2018 Jun 1, In : Sensors and Actuators, B: Chemical. 262, p. 852-859 8 p.

Research output: Contribution to journalArticle

semiconductor diodes
Schottky diodes
metal oxide semiconductors
Hydrogen
Diodes
6 Citations (Scopus)

Hydrogen sensing performance of a Pd/HfO2/GaOx/GaN based metal-oxide-semiconductor type Schottky diode

Chang, C. H., Lin, K. W., Lu, H. H., Liu, R. C. & Liu, W. C., 2018 Oct 18, In : International Journal of Hydrogen Energy. 43, 42, p. 19816-19824 9 p.

Research output: Contribution to journalArticle

Schottky diodes
metal oxide semiconductors
Diodes
Hydrogen
hydrogen
4 Citations (Scopus)

Implementation of light extraction improvements of GaN-based light-emitting diodes with specific textured sidewalls

Chen, C. Y., Chen, W. C., Chang, C. H., Lee, Y. L. & Liu, W. C., 2018 May, In : Optics and Laser Technology. 101, p. 172-176 5 p.

Research output: Contribution to journalArticle

Light emitting diodes
light emitting diodes
Inductively coupled plasma
Quantum efficiency
Electric properties
2017

An improved GaN-based light-emitting diode with a SiO2 current blocking layer embedded in stair-like AZO transparent structure

Liou, S. H., Tsai, J. H., Liu, W-C., Lin, P. S. & Chen, Y. C., 2017 Jan 1, In : ECS Journal of Solid State Science and Technology. 6, 10, p. R149-R153

Research output: Contribution to journalArticle

Zinc Oxide
Stairs
Zinc oxide
Aluminum
Light emitting diodes
4 Citations (Scopus)

Characteristics of GaN-Based LEDs with Hybrid Microhole Arrays and SiO2 Microspheres/Nanoparticles Structures

Liou, J. K., Chan, Y. C., Chen, W. C., Chang, C. H., Chen, C. Y., Tsai, J. H. & Liu, W. C., 2017 Jul, In : IEEE Transactions on Electron Devices. 64, 7, p. 2854-2858 5 p., 7932114.

Research output: Contribution to journalArticle

Antireflection coatings
Microspheres
Light emitting diodes
Nanoparticles
Passivation
13 Citations (Scopus)

Hydrogen sensing characteristics of a Pd/AlGaOx/AlGaN-based Schottky diode

Chen, H. I., Chuang, K. C., Chang, C. H., Chen, W. C., Liu, I. P. & Liu, W. C., 2017 Jan 1, In : Sensors and Actuators, B: Chemical. 246, p. 408-414 7 p.

Research output: Contribution to journalArticle

Schottky diodes
Hydrogen
Diodes
hydrogen
Gases
10 Citations (Scopus)

Hydrogen sensing performance of a Pd nanoparticle/Pd film/GaN-based diode

Chen, H. I., Cheng, Y. C., Chang, C. H., Chen, W. C., Liu, I. P., Lin, K. W. & Liu, W. C., 2017 Jan 1, In : Sensors and Actuators, B: Chemical. 247, p. 514-519 6 p.

Research output: Contribution to journalArticle

Hydrogen
Diodes
diodes
Nanoparticles
nanoparticles
1 Citation (Scopus)

Influence of AZO stair-like transparent layers on GaN-based light-emitting diodes

Liou, S. H., Tsai, J. H., Liu, W-C., Lin, P. S. & Chen, Y. C., 2017 Oct 1, In : Superlattices and Microstructures. 110, p. 171-179 9 p.

Research output: Contribution to journalArticle

Zinc Oxide
Stairs
Zinc oxide
Aluminum
zinc oxides
6 Citations (Scopus)
Inductively coupled plasma
Light emitting diodes
Photons
Plasma etching
Light emission

Performance Enhancement of GaN-Based Light-Emitting Diodes by Using Transparent Ag Metal Line Patterns

Hsu, C. S., Chen, S. Y., Liou, J. K., Chen, W. C., Chang, C. H., Chen, C. Y., Cheng, S. Y., Guo, D. F. & Liu, W. C., 2017 Jun, In : IEEE Transactions on Electron Devices. 64, 6, p. 2542-2548 7 p., 7911252.

Research output: Contribution to journalArticle

Light emitting diodes
Metals
Electric potential
Quantum efficiency
Thermal effects
4 Citations (Scopus)

Study of a GaN-Based LED with an Al/AZO Composite Transparent Conductive Layer

Hsu, C. H., Chen, S. Y., Chen, W. C., Chang, C. H., Chen, C. Y., Tsai, J. H. & Liu, W. C., 2017 Sep, In : IEEE Transactions on Electron Devices. 64, 9, p. 3678-3682 5 p., 7982960.

Research output: Contribution to journalArticle

Zinc Oxide
Zinc oxide
Aluminum
Light emitting diodes
Composite materials
7 Citations (Scopus)

Study of GaN-based LEDs with hybrid SiO2 microsphere/nanosphere antireflection coating as a passivation layer by a rapid convection deposition

Hsu, C. H., Chan, Y. C., Chen, W. C., Chang, C. H., Liou, J. K., Cheng, S. Y., Guo, D. F. & Liu, W. C., 2017 Mar, In : IEEE Transactions on Electron Devices. 64, 3, p. 1134-1139 6 p., 7845605.

Research output: Contribution to journalArticle

Antireflection coatings
Nanospheres
Microspheres
Passivation
Light emitting diodes
2016
1 Citation (Scopus)

A Pt/AlGaN/GaN heterostructure field-effect transistor (HFET) prepared by an electrophoretic deposition (EPD)-gate approach

Hung, C. W., Chang, C. H., Chen, W. C., Chen, C. C., Chen, H. I., Tsai, Y. T., Tsai, J. H. & Liu, W. C., 2016 Oct 1, In : Solid-State Electronics. 124, p. 5-9 5 p.

Research output: Contribution to journalArticle

High electron mobility transistors
field effect transistors
Transconductance
room temperature
transconductance

Hydrogen sensing performance of an electrophoretic deposition (EPD) based Pd/GaN Schottky diode

Chen, W. C., Chen, H. I., Chou, P. C., Chang, C. H., Chiou, Y. J. & Liu, W. C., 2016 Mar 21, 2015 9th International Conference on Sensing Technology, ICST 2015. IEEE Computer Society, p. 355-358 4 p. 7438422. (Proceedings of the International Conference on Sensing Technology, ICST; vol. 2016-March).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Diodes
Hydrogen
Air
Gases
Recovery
4 Citations (Scopus)

Preparation and characterization of nickel oxide-based EGFET pH sensors

Lin, F., Chang, H. Y., Hsiao, S. H., Chen, H-I. & Liu, W-C., 2016 Mar 21, 2015 9th International Conference on Sensing Technology, ICST 2015. IEEE Computer Society, p. 402-405 4 p. 7438430. (Proceedings of the International Conference on Sensing Technology, ICST; vol. 2016-March).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

pH sensors
Gates (transistor)
Nickel oxide
Oxide films
Calcination
2015

An enhancement-mode pseudomorphic high electron mobility transistor prepared by an Electroless Plating (EP) and a gate-sinking approaches

Chen, C. C., Chen, H-I., Liu, I-P., Chou, P. C., Liou, J. K., Tsai, J. H. & Liu, W-C., 2015 Jan 1, In : Solid-State Electronics. 105, p. 45-50 6 p.

Research output: Contribution to journalArticle

sinking
Electroless plating
High electron mobility transistors
high electron mobility transistors
plating
1 Citation (Scopus)

Characteristics enhancement of a GaAs based heterostructure field-effect transistor with an electrophoretic deposition (EPD) surface treated gate structure

Chen, C. C., Chen, H-I., Liu, I-P., Chou, P. C., Liou, J. K., Tsai, Y. T. & Liu, W-C., 2015 Jun 30, In : Applied Surface Science. 341, p. 120-126 7 p.

Research output: Contribution to journalArticle

High electron mobility transistors
Transconductance
gallium arsenide
Microwaves
Temperature
51 Citations (Scopus)

Characteristics of ZnO nanorods-based ammonia gas sensors with a cross-linked configuration

Chen, T. Y., Chen, H-I., Hsu, C. S., Huang, C. C., Wu, J. S., Chou, P. C. & Liu, W-C., 2015 Jul 17, In : Sensors and Actuators, B: Chemical. 221, p. 491-498 8 p.

Research output: Contribution to journalArticle

Chemical sensors
Nanorods
Ammonia
nanorods
ammonia
7 Citations (Scopus)

Enhanced light extraction of a high-power GaN-based light-emitting diode with a nanohemispherical hybrid backside reflector

Liou, J. K., Chen, W. C., Chang, C. H., Chang, Y. C., Tsai, J. H. & Liu, W. C., 2015 Oct 1, In : IEEE Transactions on Electron Devices. 62, 10, p. 3296-3301 6 p., 7194779.

Research output: Contribution to journalArticle

Aluminum Oxide
Inductively coupled plasma
Sapphire
Light emitting diodes
Nanospheres
20 Citations (Scopus)

Enhancement of hydrogen sensing performance of a GaN-based Schottky diode with a hydrogen peroxide surface treatment

Chen, C. C., Chen, H-I., Liu, I-P., Liu, H. Y., Chou, P. C., Liou, J. K. & Liu, W-C., 2015 Jan 1, In : Sensors and Actuators, B: Chemical. 211, p. 303-309 7 p.

Research output: Contribution to journalArticle

Schottky diodes
surface treatment
hydrogen peroxide
Hydrogen peroxide
Hydrogen Peroxide
2 Citations (Scopus)
Electroless plating
High electron mobility transistors
plating
Hydrogen
field effect transistors
24 Citations (Scopus)

Hydrogen sensing performance of a nickel oxide (NiO) thin film-based device

Chou, P. C., Chen, H-I., Liu, I-P., Chen, C. C., Liou, J. K., Hsu, K. S. & Liu, W-C., 2015 Jan 5, In : International Journal of Hydrogen Energy. 40, 1, p. 729-734 6 p.

Research output: Contribution to journalArticle

Nickel oxide
nickel oxides
Oxide films
Thin films
Hydrogen
7 Citations (Scopus)

Nitrogen Oxide (NO2) Gas Sensing Performance of ZnO Nanoparticles (NPs)/Sapphire-Based Sensors

Chou, P. C., Chen, H-I., Liu, I-P., Chen, C. C., Liou, J. K., Lai, C. J. & Liu, W-C., 2015 Jul 1, In : IEEE Sensors Journal. 15, 7, p. 3759-3763 5 p., 7050338.

Research output: Contribution to journalArticle

nitrogen oxides
Nitrogen oxides
Sapphire
sapphire
Nanoparticles
16 Citations (Scopus)

On a GaN-based ion sensitive field-effect transistor (ISFET) with a hydrogen peroxide surface treatment

Chen, C. C., Chen, H. I., Liu, H. Y., Chou, P. C., Liou, J. K. & Liu, W. C., 2015 Mar 31, In : Sensors and Actuators, B: Chemical. 209, p. 658-663 6 p.

Research output: Contribution to journalArticle

Ion sensitive field effect transistors
surface treatment
hydrogen peroxide
Hydrogen peroxide
Hydrogen Peroxide
6 Citations (Scopus)

On a Schottky diode-type hydrogen sensor with pyramid-like Pd nanostructures

Chou, P. C., Chen, H-I., Liu, I-P., Chen, W. C., Chen, C. C., Liou, J. K., Lai, C. J. & Liu, W-C., 2015 Aug 3, In : International Journal of Hydrogen Energy. 40, 29, p. 9006-9012 7 p., 15920.

Research output: Contribution to journalArticle

Schottky diodes
pyramids
Nanostructures
Diodes
Hydrogen
22 Citations (Scopus)

On the Ammonia Gas Sensing Performance of a RF Sputtered NiO Thin-Film Sensor

Chou, P. C., Chen, H-I., Liu, I-P., Chen, C. C., Liou, J. K., Hsu, K. S. & Liu, W-C., 2015 Jul 1, In : IEEE Sensors Journal. 15, 7, p. 3711-3715 5 p., 7053906.

Research output: Contribution to journalArticle

ammonia
Ammonia
Thin films
sensors
Sensors