程育人

Yuh-Jen Cheng

Education

  • Ph.D. in Applied Physics, Stanford University, 1997.
  • M. S. in Institue of Optics, University of Rochester, 1990.

Research Fields

  • Nitride light-emitting devices.
  • Photoelectrochemical devices for energy harvesting.
  • Cavity Quantum Electrodynamics

Experience

  • Associate Research Fellow, Research Center for Applied Sciences, Academia Sinica (2012 - present)
  • Visiting Scholar, Stanford University, 2005.
  • Staff Engineer, Onetta/Bookham Technologies, 2000-2005.
  • Senior Engineer, Seagate Technology, 1997-2000.

Patents:

Methods for fabricating group III-Nitride semiconductor film and device (U.S. and Taiwan Patents pending, 2010).
Defect selective passivation in semiconductor structures (U.S. and Taiwan Patents pending, 2009)
Method for fabricating semiconductor substrates and semiconductor devices (U.S. Patent No. 8133803 B2 and Taiwan Patents pending, 2009)
Media contact zone with bell-shaped texturing features. (U.S. Patent No. 6,663,938, 2003).
Apparatus and method to control the molecular weight distribution of a vapor. (U.S. Patent No. 6,511,702, 2003).
Optical amplifier spectral tilt controllers. (U.S. Patent No. 6,483,631, 2002).
Split phase high performance, high frequency, high dynamic range interferometer. (U.S. Patent No. 5,999,261, 1999).

Publications

High photoresponsivity MoS2 phototransistor through enhanced hole trapping HfO2 gate dielectric
Pei-Xuan Long, Yung-Yu La, Pei-Hao Kang, Chi-Huang Chuang, (Yuh-Jen Cheng)*
 [ DOI here ]    Year:2023-10-26
NANOTECHNOLOGY
Highly Active NiO-Ni(OH)2-Cr2O3/Ni Hydrogen Evolution Electrocatalyst through Synergistic Reaction Kinetics
Chi-Huang Chuang, Pei-Hao Kang, Yung-Yu Lai, Cheng-Hung Hou, Wei-Che Tseng, Yan-Jia Huang, Mu-Huai Fang, Jing-Jong Shyue, Chao-Cheng Kaun, (Yuh-Jen Cheng)*
 [ DOI here ]    Year:2023-07-08
CHEMSUSCHEM
Junction Engineering in Si Photoanode for Efficient Photoelectrochemical Water Splitting
Chi-Huang Chuang, Pei-Hao Kang, Yung-Yu Lai, Cheng-Hung Hou, and (Yuh-Jen Cheng)*
 [ DOI here ]    Year:2022-07-13
ACS APPLIED ENERGY MATERIALS
Development of GaN HEMTs Fabricated on Silicon, Silicon-on-Insulator, and Engineered Substrates and the Heterogeneous Integration
Lung-Hsing Hsu, Yung-Yu Lai, Po-Tsung Tu, Catherine Langpoklakpam, Ya-Ting Chang, Yu-Wen Huang, Wen-Chung Lee, An-Jye Tzou, (Yuh-Jen Cheng), Chun-Hsiung Lin*, Hao-Chung Kuo*, Edward Yi Chang
 [ DOI here ]    Year:2021-09-27
MICROMACHINES
Substrate Lattice Guided MoS2 Crystal Growth: Implications for van der Waals epitaxy
Yung-Yu Lai, Chi-Huang Chuang, Yen-Wei Yeh, Cheng-Hung Hou, Shih-Chieh Hsu, Yi Chou, Yi-Chia Chou, Hao-Chung Kuo, YewChung Sermon Wu, (Yuh-Jen Cheng)*
 [ DOI here ]    Year:2021-05-19
ACS Applied Nano Materials
Dependence of Photoresponsivity and On/Off Ratio on Quantum Dot Density in Quantum Dot Sensitized MoS2 Photodetector
Yung-Yu Lai, Yen-Wei Yeh, An-Jye Tzou, Yi-Yuan Chen, YewChung Sermon Wu, (Yuh-Jen Cheng)* and Hao-Chung Kuo*
 [ DOI here ]    Year:2020-09-14
NANOMATERIALS
Oxygenated Water Inhibits Adipogenesis and Attenuates Hepatic Steatosis in High-Fat Diet-Induced Obese Mice
(Yuh-Jen Cheng), Chao-Chi Liu, Fang-Yeh Chu, Ching-Ping Yang, Chiao-Wan Hsiao, Cheng-Wei Chuang, Ming-Yuh Shiau, Hsueh-Te Lee, Jen-Ning Tsai, and Yih-Hsin Chang*
 [ DOI here ]    Year:2020-07-31
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Annealed Polycrystalline TiO2 Interlayer of the n-Si/TiO2/Ni Photoanode for Efficient Photoelectrochemical Water Splitting
Chi-Huang Chuang, Yung-Yu Lai, Cheng-Hung Hou, and (Yuh-Jen Cheng)*
 [ DOI here ]    Year:2020-04-07
ACS applied energy materials
Junction energetics engineering using Ni/NiOx core-shell nanoparticle coating for efficient photoelectrochemical water splitting
Yen-Hsien Yeh, Chi-Huang Chuang, Tzu-Yi Yu, Mei-Chun Liu, and (Yuh-Jen Cheng)*
 [ DOI here ]    Year:2019-06-21
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Deep-Ultraviolet Hyperbolic Metacavity Laser
Kun-Ching Shen, Chen-Ta Ku, Chiieh Hsieh, Hao-Chung Kuo, (Yuh-Jen Cheng), and Din Ping Tsai*
    Year:2018-04-06
ADVANCED MATERIALS
Giant enhancement of emission efficiency and light directivity by using hyperbolic metacavity on deep-ultraviolet AlGaN emitter
Kun-Ching Shen, Chiieh Hsieh, (Yuh-Jen Cheng), Din Ping Tsai*
    Year:2018-01-12
NANO ENERGY
Enhanced water splitting performance of GaN photoanode using self-assembled nickel/nickeloxide nanoparticle catalyst
Yen-Hsien Yeh, Tzu-Yi Yu, Mei-Chun Liu, (Yuh-Jen Cheng)*
    Year:2017-10-14
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Site-controlled crystalline InN growth from the V-pits of a GaN substrate
Chien-Ting Kuo, Lung-Hsing Hsu, Yung-Yu Lai, Shan-Yun Chengc, Hao-Chung Kuo, Chien-Chung Lin, and (Yuh-Jen Cheng)*
    Year:2017-02-08
APPLIED SURFACE SCIENCE
Influence of the microstructure geometry of patterned sapphire substrate on the light extraction efficiency of GaN LEDs
Chien-Ting Kuo, Lung-Hsing Hsu, Bo-Hsin Huang, Hao-Chung Kuo, Chien-Chung Lin, and (Yuh-Jen Cheng)*
    Year:2016-09
APPLIED OPTICS
Multi-facet microrod light-emitting diode with full visible spectrum emission
Yun-Jing Li, Jet-Rung Chang, Shih-Pang Chang, Bo-Wen Lin, Yen-Hsien Yeh, Hao-Chung Kuo, (Yuh-Jen Cheng)*, Chung-Yen Chang
    Year:2016-09
Journal of Display Technology
InN heterojunction photodetector with extended infrared response
L.-H. Hsu, C.-T. Kuo, J.-K. Huang, S.-C. Hsu, H.-Y. Lee, H.-C. Kuo, P.-T. Lee, Y.-L. Tsai, Y.-C. Hwang, C.-F. Su, J.-H. He, S.-Y. Lin, (Y.-J. Cheng), and C.-C. Lin*
    Year:2015-11
OPTICS EXPRESS
Numerical study of a highly efficient solar cell with graded band gap design
Ming-Hsuan Tan, Hung-Ruei Tseng, Chien-Ting Kuo, Shun-Chieh Hsu, Yen-Hua Lo, Che-Pin Tsai, (Yuh-Jen Cheng), and Chien-Chung Lin*
    Year:2015-04
Japan Journal of Applied Physics
InGaN/GaN multiple-quantum-well nanopyramid-on-pillar light-emitting diodes
Yun-Jing Li, Jet-Rung Chang, Shih-Pang Chang, Kuok-Pan Sou, (Yuh-Jen Cheng),* Hao-Chung Kuo, and Chun-Yen Chang
    Year:2015-03
Applied Physics Express
Resonant modes of 12-fold symmetric defect free photonic quasicrystal
Minfeng Chen, Yun-Jing Li, (Yuh-Jen Cheng)* , Yai-Chung Chang, and Chun-Yen Chang
    Year:2014-01
OPTICS EXPRESS
Room temperature ultraviolet GaN metal-coated nanorod laser
Yu-Cheng Hsu, Kuok-Pan Sou, Shih-Pang Chang, Kung-Shu Hsu, M. H. Shih,* Hao-Chung Kuo, Yuh-Jen Cheng, and Chun-Yen Chang
    Year:2013-11
APPLIED PHYSICS LETTERS
Electrically driven green, olivine, and amber color nanopyramid light emitting diodes
Shih-Pang Chang, Jet-Rung Chang, Kuok-Pan Sou, Mei-Chun Liu, (Yuh-Jen Cheng),* Hao-Chung Kuo, and Chun-Yen Chang
    Year:2013-10
OPTICS EXPRESS
Fabrication and luminescent properties of core-shell InGaN/GaN multiple quantum wells on GaN nanopillars
J.-R. Chang, S.-P. Chang, Y.-J. Li, (Y.-J. Cheng),* K.-P. Sou, J.-K. Huang, H.-C. Kuo, and C.-Y. Chang
    Year:2012-06
APPLIED PHYSICS LETTERS
Lasing action in gallium nitride quasicrystal nanorod arrays
Shih-Pang Chang, Kuok-Pan Sou, Chieh-Han Chen, (Yuh-Jen Cheng),* Ji-Kai Huang, Chung-Hsiang Lin, Hao-Chung Kuo, Chun-Yen Chang, and Wen-Feng Hsieh
    Year:2012-05
OPTICS EXPRESS
Electrically driven nanopyramid green light emitting diode
S.-P. Chang, Y.-C. Chen, J.-K. Huang, (Y.-J. Cheng),* J.-R. Chang, K.-P. Sou, Y.-T. Kang, H.-C. Yang, T.-C. Hsu, H.-C. Kuo, and C.-Y. Chang
    Year:2012-02
APPLIED PHYSICS LETTERS
Fabrication of aligned single wall carbon nanotube absorbers for high power passive mode-locked Nd:GdVO laser
4.\tCheng, S.Y., Wang, Y.G.,* Yu, P., (Cheng, Y.J.), Tang, J., Chen, H.R., Hsieh, W.F.
    Year:2012-01
LASER PHYSICS
Lasing at excitonic transition in optically pumped gallium nitride nanopillars
Ming-Hua Lo, (Yuh-Jen Cheng),* Mei-Chun Liu, Hao-Chung Kuo, and Shing Chung Wang
    Year:2011-09
OPTICS EXPRESS
Optical properties of self assembled GaN polarity inversion domain boundary
M.-C. Liu, (Y.-J. Cheng),* J.-R. Chang, S.-C. Hsu, and C.-Y. Chang
    Year:2011-07
APPLIED PHYSICS LETTERS
Patterned structure of REMOTE PHOSPHOR for phosphor-converted white LEDs
3.\tHao-Chung Kuo,* Cheng-Wei Hung, Hsin-Chu Chen, Kuo-Ju Chen, Chao-Hsun Wang, Chin-Wei Sher, Chia-Chi Yeh, Chien-Chung Lin, Cheng-Huan Chen, and (Yuh-Jen Cheng)
    Year:2011-07
OPTICS EXPRESS
Light Output Enhancement of UV Light-Emitting Diodes With Embedded Distributed Bragg Reflector
Bo-Siao Cheng, Ching-Hsueh Chiu, Ming-Hua Lo, Yun-Lin Wu, Hao-Chung Kuo,* Tien-Chang Lu, (Yuh-Jen Cheng), Shing-Chung Wang, and Kuo-Jui Huang
    Year:2011-05
IEEE PHOTONICS TECHNOLOGY LETTERS
Enhanced electron-hole plasma stimulated emission in optically pumped gallium nitride nanopillars
M.-H. Lo, (Y.-J. Cheng),* H.-C. Kuo, and S.-C. Wang
    Year:2011-03
APPLIED PHYSICS LETTERS
Enhanced Stimulated Emission from Optically Pumped Gallium Nitride Nanopillars
M.-H. Lo, (Y.-J. Cheng),* H.-C. Kuo, and S.-C. Wang
    Year:2011-02
Applied Physics Express
Output power enhancement of light-emitting diodes with defect passivation layer
M.-H. Lo, P.-M. Tu, C.-H. Wang, (Y.-J. Cheng)*, C.-W. Hung, S.-C. Hsu, H.-C. Kuo,
    Year:2010-02
Proceedings of SPIE
Fabrication of high-power InGaN-based light-emitting diode chips on pyramidally patterned sapphire substrate
Y.-J. Chen, C.-H. Kuo, C.-J. Tun, S.-C. Hsu, (Y.-J. Cheng), C.-Y. Liu*
    Year:2010-01
JAPANESE JOURNAL OF APPLIED PHYSICS
Defect selective passivation in GaN epitaxial growth for light emitting diode application
M.-H. Lo, P.-M. Tu, C.-H. Wang, (Y.-J. Cheng)*, C.-W. Hung, S.-C. Hsu, H.-C. Kuo, H.-W. Zan, and S.-C. Wang, C.-Y. Chang, and C.-M. Liu
    Year:2009-11
APPLIED PHYSICS LETTERS
High efficiency light emitting diode with anisotropically etched GaN-sapphire interfac
M.-H. Lo, P.-M. Tu, C.-H. Wang, C.-W. Hung, S.-C. Hsu, (Y.-J. Cheng)*, H.-C. Kuo, H.-W. Zan, S.-C. Wang, and C.-Y. Chang
    Year:2009-07
APPLIED PHYSICS LETTERS
Broadband and omnidirectional antireflection employing disordered GaN nanopillars
C. H. Chiu, P. C. Yu*, H. C. Kuo, C. C. Chen, T.C. Lu, S. C. Wang, S. H. Hsu, (Y. J. Cheng), and Y. C. Chang
    Year:2008-06
OPTICS EXPRESS
Spatially dependent spontaneous emission and Rabi oscillations of atoms in an open cavity with nonorthogonal eigenmodes
Y.-J. Cheng*
    Year:2008-03
PHYSICAL REVIEW A
Spontaneous emission of an atom in a cavity with nonorthogonal eigenmodes
Y.-J. Cheng*
    Year:2006-09
PHYSICAL REVIEW LETTERS
Quantum relaxation dynamics of magnetic moments in radiative reservoir
Y.-J. Cheng*
    Year:2004
PHYSICAL REVIEW B
Generalized radiation-field quantization method and the Petermann excess-noise factor
Y.-J. Cheng*, and A. E. Siegman
    Year:2003
PHYSICAL REVIEW A
Transverse mode astigmatism in a diode-pumped unstable-resonator Nd:YVO4 laser
Y.-J. Cheng, C. G. Fanning, and A. E. Siegman*
    Year:1997
APPLIED OPTICS
Experimental observation of a large excess quantum noise factor in the linewidth of a laser oscillator having nonorthogonal modes
Y.-J. Cheng, C. G. Fanning, and A. E. Siegman*
    Year:1996
PHYSICAL REVIEW LETTERS
Cavity decay rate and relaxation oscillation frequency in unconventional laser cavities
Y.-J. Cheng, P. L. Mussche, and A. E. Siegman*
    Year:1995
IEEE JOURNAL OF QUANTUM ELECTRONICS
Measurement of laser quantum frequency fluctuations using a Pound-Drever stabilization system
Y.-J. Cheng, P. L. Mussche, and A. E. Siegman*
    Year:1994
IEEE JOURNAL OF QUANTUM ELECTRONICS