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Yuh-Jen Cheng
Researcher at Academia Sinica
Publications - 80
Citations - 1896
Yuh-Jen Cheng is an academic researcher from Academia Sinica. The author has contributed to research in topics: Gallium nitride & Light-emitting diode. The author has an hindex of 15, co-authored 77 publications receiving 1656 citations. Previous affiliations of Yuh-Jen Cheng include Stanford University & Seagate Technology.
Papers
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High-gain phototransistors based on a CVD MoS₂ monolayer.
TL;DR: A phototransistor based on a chemical vapor deposited MoS2 monolayer exhibits a high photoresponsivity and an excellent photogain and the presence of shallow traps contributes to the persistent photoconductivity.
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Patterned structure of REMOTE PHOSPHOR for phosphor-converted white LEDs
Hao-Chung Kuo,Cheng Wei Hung,Hsin-Chu Chen,Kuo-Ju Chen,Chao Hsun Wang,Chin Wei Sher,C. C. Yeh,Chien-Chung Lin,Cheng-Huan Chen,Yuh-Jen Cheng +9 more
TL;DR: It is suggested that the patternedRemote phosphor structure could improve the uniformity of angular-dependent correlated color temperature (CCT) and achieve high chromatic stability in wider operating current range, as compared to the conventional remote phosphor coating structure.
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Broadband and omnidirectional antireflection employing disordered GaN nanopillars
Ching-Hua Chiu,Peichen Yu,Hao-Chung Kuo,Chun-Ho Chen,Tien-Chang Lu,Shing Chung Wang,Shih Hsin Hsu,Yuh-Jen Cheng,Yia-Chung Chang +8 more
TL;DR: An algorithm based on a rigorous coupled-wave analysis (RCWA) method is developed to investigate the correlations between the reflective characteristics and the structural properties of the nanopillars.
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Deep-Ultraviolet Hyperbolic Metacavity Laser.
Kun Ching Shen,Chen Ta Ku,Chiieh Hsieh,Hao-Chung Kuo,Yuh-Jen Cheng,Din Ping Tsai,Din Ping Tsai,Din Ping Tsai +7 more
TL;DR: The hyperbolic metacavity laser shows a clear clamping of spontaneous emission above the threshold, which demonstrates a near complete radiation coupling of the MQW with the metac Cavity, which can greatly simplify the requirements of plasmonic nanolaser with a long plAsmonic structure.
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Experimental Observation of a Large Excess Quantum Noise Factor in the Linewidth of a Laser Oscillator Having Nonorthogonal Modes.
TL;DR: In this paper, the authors reported a detailed experimental measurement of the excess noise factor in a diode-pumped hard-edged unstable-resonator Nd:YV${\mathrm{O}}_{4}$ laser.