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2019
1 Citation (Scopus)

A curvature-tunable random laser

Lee, Y. J., Yeh, T. W., Yang, Z. P., Yao, Y. C., Chang, C. Y., Tsai, M. T. & Sheu, J-K., 2019 Feb 28, In : Nanoscale. 11, 8, p. 3534-3545 12 p.

Research output: Contribution to journalArticle

Lasers
Optical feedback
Polyethylene Terephthalates
Cavity resonators
Multiple scattering

Bending-induced tunable threshold in random laser

Lee, Y. J., Yeh, T. W., Yang, Z. P., Yao, Y. C., Chang, C. Y., Tsai, M. T. & Sheu, J-K., 2019 Jan 1, CLEO: Science and Innovations, CLEO_SI 2019. OSA - The Optical Society, (Optics InfoBase Conference Papers; vol. Part F129-CLEO_SI 2019).

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

Polyethylene Terephthalates
Polyethylene terephthalates
Nanowires
Light sources
Photons

Bending-Induced Tunable Threshold in Random Laser

Lee, Y. J., Yeh, T. W., Yang, Z. P., Yao, Y. C., Chang, C. Y., Tsai, M. T. & Sheu, J-K., 2019 May 1, 2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 8750113. (2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings).

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

Nanowires
spectral emission
Polyethylene Terephthalates
polyethylene terephthalate
Photons

Investigation on Modulation Speed of Photon-Recycling White Light-Emitting Diodes with Vertical-Conduction Structure

Chen, F. B., Chi, K. L., Yen, W. Y., Sheu, J-K., Lee, M. L. & Shi, J. W., 2019 Feb 15, In : Journal of Lightwave Technology. 37, 4, p. 1225-1230 6 p., 8598743.

Research output: Contribution to journalArticle

recycling
light emitting diodes
phosphors
modulation
conduction

Light-emitting diodes with surface gallium nitride p–n homojunction structure formed by selective area regrowth

Lee, M. L., Wang, S. S., Yeh, Y. H., Liao, P. H. & Sheu, J-K., 2019 Dec 1, In : Scientific reports. 9, 1, 3243.

Research output: Contribution to journalArticle

Light
gallium nitride
Ultraviolet Rays
Photons
2 Citations (Scopus)

Mn valence state mediated room temperature ferromagnetism in nonpolar Mn doped GaN

Wadekar, P. V., Chang, C. W., Zheng, Y. J., Guo, S. S., Hsieh, W. C., Cheng, C. M., Ma, M. H., Lai, W-C., Sheu, J-K., Chen, Q. Y. & Tu, L. W., 2019 Apr 15, In : Applied Surface Science. 473, p. 693-698 6 p.

Research output: Contribution to journalArticle

Ferromagnetism
ferromagnetism
Doping (additives)
valence
room temperature

Verification of complex acoustic mismatch model in sub-THz regime

Wei, F. J., Mole, R. A., Karna, S. K., Shi, J. W., Sheu, J-K. & Lin, K. H., 2019 Apr 15, In : Applied Physics Letters. 114, 15, 151106.

Research output: Contribution to journalArticle

Open Access
acoustics
silicon dioxide
acoustic attenuation
acoustic impedance
acoustic properties
2018
3 Citations (Scopus)

GaN intermediate band solar cells with Mn-doped absorption layer

Lee, M. L., Huang, F. W., Chen, P. C. & Sheu, J-K., 2018 Dec 1, In : Scientific reports. 8, 1, 8641.

Research output: Contribution to journalArticle

solar cells
electroluminescence
control equipment
air masses
short circuit currents
2 Citations (Scopus)

Suppressing the initial growth of sidewall GaN by modifying micron-sized patterned sapphire substrate with H3PO4-based etchant

Hsu, W. Y., Lian, Y. C., Wu, P. Y., Yong, W. M., Sheu, J-K., Lin, K. L. & Wu, Y. C. S., 2018 Nov 26, In : Micromachines. 9, 12, 622.

Research output: Contribution to journalArticle

Sapphire
Nucleation
Substrates
Coalescence
Light emitting diodes
2017
2 Citations (Scopus)

Carrier dynamics of Mn-induced states in GaN thin films

Chen, Y. T., Yang, C. Y., Chen, P. C., Sheu, J-K. & Lin, K. H., 2017 Dec 1, In : Scientific reports. 7, 1, 5788.

Research output: Contribution to journalArticle

thin films
solar cells
optical measurement
light emission
manganese
1 Citation (Scopus)

Design of GaN-Based Multicolor Tunnel-Junction Light-Emitting Diodes

Shih, Y. H., Chang, J. Y., Kuo, Y. K., Chen, F. M., Huang, M. F., Lee, M. L. & Sheu, J-K., 2017 Nov 28, (Accepted/In press) In : IEEE Transactions on Electron Devices.

Research output: Contribution to journalArticle

Tunnel junctions
Light emitting diodes
Semiconductor quantum wells
Color
Full width at half maximum
1 Citation (Scopus)

Extracting elastic properties of an atomically thin interfacial layer by time-domain analysis of femtosecond acoustics

Chen, H. Y., Huang, Y. R., Shih, H. Y., Chen, M. J., Sheu, J-K. & Sun, C. K., 2017 Nov 20, In : Applied Physics Letters. 111, 21, 213101.

Research output: Contribution to journalArticle

time domain analysis
elastic properties
acoustics
engineering
transmission electron microscopy

GaN based Cyan light-emitting diodes with GHz bandwidth

Shi, J. W., Chi, K. L., Wun, J. M., Bowers, J. E. & Sheu, J-K., 2017 Jan 23, 2016 IEEE Photonics Conference, IPC 2016. Institute of Electrical and Electronics Engineers Inc., p. 623-624 2 p. 7831257. (2016 IEEE Photonics Conference, IPC 2016).

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

Light emitting diodes
light emitting diodes
bandwidth
Bandwidth
Carrier lifetime
4 Citations (Scopus)

GaN-based cyan light-emitting diode with up to 1-GHz bandwidth for high-speed transmission over SI-POF

Vinogradov, J., Kruglov, R., Engelbrecht, R., Ziemann, O., Sheu, J-K., Chi, K. L., Wun, J. M. & Shi, J. W., 2017 Jan 1, In : IEEE Photonics Journal. 9, 3, 7201707.

Research output: Contribution to journalArticle

Plastic optical fibers
plastic fibers
International System of Units
Light emitting diodes
light emitting diodes

III-V Nitride-based photodetection

Lin, C. C., Hsu, L. H., Tsai, Y. L., Kuo, H. C. H., Lai, W-C. & Sheu, J-K., 2017 Jan 1, Handbook of GaN Semiconductor Materials and Devices. CRC Press, p. 597-614 18 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Nitrides
nitrides
Indium
indium
Gallium nitride
3 Citations (Scopus)

InGaN-based epitaxial films as photoelectrodes for hydrogen generation through water photoelectrolysis and CO2 reduction to formic acid

Sheu, J-K., Liao, P. H., Huang, T. C., Chiang, K. J., Lai, W-C. & Lee, M. L., 2017 Jul 1, In : Solar Energy Materials and Solar Cells. 166, p. 86-90 5 p.

Research output: Contribution to journalArticle

formic acid
Epitaxial films
Formic acid
Hydrogen
Electrodes
2 Citations (Scopus)

In Situ Monitoring of Chemical Reactions at a Solid-Water Interface by Femtosecond Acoustics

Shen, C. C., Weng, M. Y., Sheu, J-K., Yao, Y. T. & Sun, C. K., 2017 Nov 2, In : Journal of Physical Chemistry Letters. 8, 21, p. 5430-5437 8 p.

Research output: Contribution to journalArticle

Chemical reactions
chemical reactions
Acoustics
acoustics
Water
1 Citation (Scopus)

Monolithic stacked blue light-emitting diodes with polarization-enhanced tunnel junctions

Kuo, Y. K., Shih, Y. H., Chang, J. Y., Lai, W-C., Liu, H., Chen, F. M., Lee, M. L. & Sheu, J-K., 2017 Aug 7, In : Optics Express. 25, 16, p. A777-A784

Research output: Contribution to journalArticle

tunnel junctions
light emitting diodes
polarization
electric potential
diagrams

Multiple-layered type-II GaSb/GaAs quantum ring solar cells under concentrated solar illumination

Jheng, Y. H., Hsu, S. C., Wu, S. H., Sheu, J-K., Lo, Y. T., Kuo, H. C., Chen, H. A., Lin, S. Y. & Lin, C. C., 2017 Jan 1, 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017. Institute of Electrical and Electronics Engineers Inc., p. 1-4 4 p. (2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017).

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

Solar cells
Lighting
Infrared radiation
Sun
Nanostructures

Photoelectrochemical hydrogen generation from water using undoped GaN with selective-area Si-implanted stripes as a photoelectrode

Sheu, J-K., Liao, P. H., Cheng, H. Y. & Lee, M. L., 2017 Jan 1, In : Journal of Materials Chemistry A. 5, 43, p. 22625-22630 6 p.

Research output: Contribution to journalArticle

Hydrogen
Water
Photoelectrochemical cells
Epitaxial layers
Ion implantation
3 Citations (Scopus)

Planar GaN-Based Blue Light-Emitting Diodes with Surface p-n Junction Formed by Selective-Area Si-Ion Implantation

Lee, M. L., Yeh, Y. H., Liu, Z. Y., Chiang, K. J. & Sheu, J-K., 2017 Oct 1, In : IEEE Transactions on Electron Devices. 64, 10, p. 4156-4160 5 p., 8013099.

Research output: Contribution to journalArticle

Ion implantation
Light emitting diodes
Semiconductor quantum wells
Luminescence
Optical pumping

The development of high-speed ill-nitride based light-emitting diode for visible light and plastic Optical fiber communications

Shi, J. W. & Sheu, J-K., 2017 Nov 20, 30th Annual Conference of the IEEE Photonics Society, IPC 2017. Institute of Electrical and Electronics Engineers Inc., p. 73-74 2 p. (30th Annual Conference of the IEEE Photonics Society, IPC 2017; vol. 2017-January).

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

Optical fiber communication
Plastic optical fibers
plastic fibers
Nitrides
nitrides
2 Citations (Scopus)

Theoretical investigation of efficient green tunnel-junction light-emitting diodes

Kuo, Y. K., Shih, Y. H., Chang, J. Y., Chen, F. M., Lee, M. L. & Sheu, J-K., 2017 Jan 1, In : IEEE Electron Device Letters. 38, 1, p. 75-78 4 p., 7752856.

Research output: Contribution to journalArticle

Tunnel junctions
Light emitting diodes
Quantum efficiency
Current density
2016
10 Citations (Scopus)

Design of Hole-Blocking and Electron-Blocking Layers in AlxGa1-xN-Based UV Light-Emitting Diodes

Shih, Y. H., Chang, J. Y., Sheu, J-K., Kuo, Y. K., Chen, F. M., Lee, M. L. & Lai, W-C., 2016 Mar 1, In : IEEE Transactions on Electron Devices. 63, 3, p. 1141-1147 7 p., 7399737.

Research output: Contribution to journalArticle

Diodes
Electrons
Light emitting diodes
Chemical analysis
Valence bands
17 Citations (Scopus)

Enhancing UV-emissions through optical and electronic dual-function tuning of Ag nanoparticles hybridized with n-ZnO nanorods/p-GaN heterojunction light-emitting diodes

Yao, Y. C., Yang, Z. P., Hwang, J. M., Chuang, Y. L., Lin, C. C., Haung, J. Y., Chou, C. Y., Sheu, J-K., Tsai, M. T. & Lee, Y. J., 2016 Feb 28, In : Nanoscale. 8, 8, p. 4463-4474 12 p.

Research output: Contribution to journalArticle

Nanorods
Light emitting diodes
Heterojunctions
Tuning
Nanoparticles
1 Citation (Scopus)

GaN-Based UV Light-Emitting Diodes With a Green Indicator Through Selective-Area Photon Recycling

Chen, F. B., Sheu, J-K., Yen, W. Y., Wang, Y. C., Huang, S. H., Liu, C. N., Yeh, Y. H., Chang, C. C. & Lee, M. L., 2016 Mar 1, In : IEEE Transactions on Electron Devices. 63, 3, p. 1122-1127 6 p., 7395353.

Research output: Contribution to journalArticle

Light emitting diodes
Recycling
Photons
Semiconductor quantum wells
Wafer bonding
19 Citations (Scopus)

III-Nitride-Based Cyan Light-Emitting Diodes with GHz Bandwidth for High-Speed Visible Light Communication

Shi, J. W., Chi, K. L., Wun, J. M., Bowers, J. E., Shih, Y. H. & Sheu, J-K., 2016 Jul 1, In : IEEE Electron Device Letters. 37, 7, p. 894-897 4 p., 7479469.

Research output: Contribution to journalArticle

Nitrides
Light emitting diodes
Bandwidth
Aluminum Oxide
Quantum efficiency
4 Citations (Scopus)

Manganese-doped AlGaN/GaN heterojunction solar cells with intermediate band absorption

Sheu, J-K., Chen, P. C., Shin, C. L., Lee, M. L., Liao, P. H. & Lai, W-C., 2016 Dec 1, In : Solar Energy Materials and Solar Cells. 157, p. 727-732 6 p.

Research output: Contribution to journalArticle

Manganese
Heterojunctions
Absorption spectra
Solar cells
Electron energy levels
2 Citations (Scopus)

Mask-free regrowth of GaN p-i-n structure on selective-area Si-implanted n-GaN template layer

Sheu, J-K., Chen, P. C., Yeh, Y. H., Kuo, S. H., Lee, M. L., Liao, P. H. & Lai, W-C., 2016 Apr 15, In : Acta Materialia. 108, p. 17-25 9 p.

Research output: Contribution to journalArticle

Masks
Diodes
Electron transitions
Valence bands
Photodiodes
1 Citation (Scopus)

Multiple-layered type-II GaSb/GaAs quantum ring solar cells under concentrated solar illumination

Jheng, Y. H., Hsu, S. C., Wu, S. H., Sheu, J-K., Lo, Y. T., Kuo, H. C., Chen, H. A., Lin, S. Y. & Lin, C. C., 2016 Nov 18, 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Institute of Electrical and Electronics Engineers Inc., p. 2091-2094 4 p. 7749999. (Conference Record of the IEEE Photovoltaic Specialists Conference; vol. 2016-November).

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

Solar cells
Lighting
Infrared radiation
Photocurrents
Sun

Physical properties of Al-doped MgZnO/AlGaN p–n heterojunction photodetectors

Hsueh, K. P., Chiu, H. C., Sheu, J-K. & Yeh, Y. H., 2016 Nov 1, In : Optical and Quantum Electronics. 48, 11, 501.

Research output: Contribution to journalArticle

Photodetectors
photometers
Heterojunctions
heterojunctions
Physical properties
4 Citations (Scopus)

THz Acoustic Spectroscopy by using Double Quantum Wells and Ultrafast Optical Spectroscopy

Wei, F. J., Yeh, Y. H., Sheu, J-K. & Lin, K. H., 2016 Jun 27, In : Scientific reports. 6, 28577.

Research output: Contribution to journalArticle

quantum wells
acoustics
spectroscopy
scattering
transducers
2015
1 Citation (Scopus)

Al-doped MgZnO/p-AlGaN heterojunction and their application in ultraviolet photodetectors

Hsueh, K. P., Cheng, P. W., Lin, W. Y., Chiu, H. C., Sheu, J-K. & Yeh, Y. H., 2015 Jan 1, International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2014. Nasution, A. (ed.). SPIE, 94440K. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 9444).

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

AlGaN
Heterojunction
Photodetector
Photodetectors
Ultraviolet

Characterization of Nb-doped MgZnO films grown by a radio-frequency magnetron sputtering system

Hsueh, K. P., Lin, W. Y., Chiu, H. C., Wang, H. C., Sheu, J-K. & Yeh, Y. H., 2015 Aug 31, IBP 2015 - 2015 IEEE International Broadband and Photonics Conference. Institute of Electrical and Electronics Engineers Inc., p. 55-59 5 p. 7230765. (IBP 2015 - 2015 IEEE International Broadband and Photonics Conference).

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

Niobium
niobium
Magnetron sputtering
radio
radio frequencies

Effects of temperature on niobium-doped MgZnO films grown using radio-frequency magnetron sputtering

Hsueh, K. P., Huang, C. Y., Chiu, H. C., Sheu, J-K. & Yeh, Y. H., 2015 Jan 1, In : ECS Journal of Solid State Science and Technology. 4, 8, p. Q96-Q100

Research output: Contribution to journalArticle

Niobium
Magnetron sputtering
X ray photoelectron spectroscopy
Temperature
X ray diffraction
5 Citations (Scopus)

GaN-based photon-recycling green light-emitting diodes with vertical-conduction structure

Sheu, J-K., Chen, F. B., Yen, W. Y., Wang, Y. C., Liu, C. N., Yeh, Y. H. & Lee, M. L., 2015 Apr 6, In : Optics Express. 23, 7, p. A371-A381

Research output: Contribution to journalArticle

recycling
light emitting diodes
conduction
photons
quantum wells
4 Citations (Scopus)

Positioning effect of type-II GaSb/GaAs quantum ring layer on solar cell performances

Hsu, S. C., Chen, Y. H., Chen, H. A., Lin, S. Y., Shen, T. L., Kuo, H. C., Shih, C. L., Sheu, J-K. & Lin, C. C., 2015 Dec 14, 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355811. (2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015).

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

Solar cells
Open circuit voltage
Sun
gallium arsenide
21 Citations (Scopus)

THz acoustic phonon spectroscopy and nanoscopy by using piezoelectric semiconductor heterostructures

Mante, P. A., Huang, Y. R., Yang, S. C., Liu, T. M., Maznev, A. A., Sheu, J-K. & Sun, C. K., 2015 Feb 1, In : Ultrasonics. 56, p. 52-65 14 p.

Research output: Contribution to journalReview article

acoustics
spectroscopy
nitrides
phonons
attenuation
5 Citations (Scopus)

Vertical GaN-Based LEDs with Naturally Textured Surface Formed by Patterned Sapphire Substrate with Self-Assembled Ag Nanodots as Etching Mask

Yeh, Y. H., Sheu, J-K., Lee, M. L., Yen, W. Y., Peng, L. C., Yeh, C. Y., Liao, P. H., Chen, P. C. & Lai, W-C., 2015 Sep 1, In : IEEE Transactions on Electron Devices. 62, 9, p. 2919-2923 5 p., 7202874.

Research output: Contribution to journalArticle

Aluminum Oxide
Sapphire
Light emitting diodes
Masks
Etching
12 Citations (Scopus)

Warm-white light-emitting diode with high color rendering index fabricated by combining trichromatic InGaN emitter with single red phosphor

Sheu, J-K., Chen, F. B., Wang, Y. C., Chang, C. C., Huang, S. H., Liu, C. N. & Lee, M. L., 2015 Apr 6, In : Optics Express. 23, 7, p. A232-A239

Research output: Contribution to journalArticle

phosphors
emitters
light emitting diodes
color
quantum wells
8 Citations (Scopus)

White emission from non-planar InGaN/GaN MQW LEDs grown on GaN template with truncated hexagonal pyramids

Lee, M. L., Yeh, Y. H., Tu, S. J., Chen, P. C., Lai, W-C. & Sheu, J-K., 2015 Apr 6, In : Optics Express. 23, 7, p. A401-A412

Research output: Contribution to journalArticle

pyramids
light emitting diodes
templates
quantum wells
indium