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17 results on '"Kang, Chieh‐Yu"'

2. Broadband Cr 3+ , Sn 4+ ‐Doped Oxide Nanophosphors for Infrared Mini Light‐Emitting Diodes

Author

Ru-Shi Liu, Wen-Tse Huang, Kuang-Mao Lu, Kang Chieh-Yu, Chia-Wei Yang, Chih-Min Lin, Chiao-Ling Cheng, and Zhen Bao

Subjects
Materials science, business.industry, Infrared, Doping, Oxide, Phosphor, 02 engineering and technology, General Chemistry, Mesoporous silica, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Catalysis, 0104 chemical sciences, law.invention, chemistry.chemical_compound, chemistry, Radiant flux, law, Optoelectronics, 0210 nano-technology, business, Diode, Light-emitting diode
Abstract

Light-emitting diodes break barriers of size and performance for displays. With devices becoming smaller, the materials also need to get smaller. Chromium(III)-doped oxide phosphors, which emit near-infrared (NIR) light, have recently been used in small electronic devices. In this work, mesoporous silica nanoparticles were used as nanocarriers. The nanophosphor ZnGa2 O4 :Cr3+ ,Sn4+ formed in the mesopore after sintering. Good dispersity and morphology were performed with average diameters of 71±7 nm. It emitted light at 600-850 nm; the intensity was optimized by tuning the doping ratio of Cr3+ and Sn4+ . Meanwhile, the light conversion efficiency increased from 7.8 % to 37 % and the molar concentration increased from 0.125 m to 0.5 m. The higher radiant flux of 3.3 mW was obtained by operating an input current of 45 mA. However, the NIR nanophosphor showed good performance on mini light-emitting diode chips.

Published
2019

4. Giant Optical Anisotropy of Perovskite Nanowire Array Films

Author

Lin, Chun‐Ho, primary, Kang, Chieh‐Yu, additional, Wu, Ting‐Zhu, additional, Tsai, Chun‐Lin, additional, Sher, Chin‐Wei, additional, Guan, Xinwei, additional, Lee, Po‐Tsung, additional, Wu, Tom, additional, Ho, Chih‐Hsiang, additional, Kuo, Hao‐Chung, additional, and He, Jr‐Hau, additional

Published
2020
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5. White Light‐Emitting Diodes: Highly Efficient and Stable White Light‐Emitting Diodes Using Perovskite Quantum Dot Paper (Adv. Sci. 24/2019)

Author

Kang, Chieh‐Yu, primary, Lin, Chun‐Ho, additional, Lin, Chih‐Hao, additional, Li, Ting‐You, additional, Huang Chen, Sung‐Wen, additional, Tsai, Chun‐Lin, additional, Sher, Chin‐Wei, additional, Wu, Ting‐Zhu, additional, Lee, Po‐Tsung, additional, Xu, Xuezhu, additional, Zhang, Maolin, additional, Ho, Chih‐Hsiang, additional, He, Jr‐Hau, additional, and Kuo, Hao‐Chung, additional

Published
2019
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7. Highly Efficient and Stable White Light‐Emitting Diodes Using Perovskite Quantum Dot Paper

Author

Kang, Chieh‐Yu, primary, Lin, Chun‐Ho, additional, Lin, Chih‐Hao, additional, Li, Ting‐You, additional, Huang Chen, Sung‐Wen, additional, Tsai, Chun‐Lin, additional, Sher, Chin‐Wei, additional, Wu, Ting‐Zhu, additional, Lee, Po‐Tsung, additional, Xu, Xuezhu, additional, Zhang, Maolin, additional, Ho, Chih‐Hsiang, additional, He, Jr‐Hau, additional, and Kuo, Hao‐Chung, additional

Published
2019
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8. Ultrawide Color Gamut Perovskite and CdSe/ZnS Quantum-Dots-Based White Light-Emitting Diode with High Luminous Efficiency

Author

Lin, Chih-Hao, primary, Kang, Chieh-Yu, additional, Verma, Akta, additional, Wu, Tingzhu, additional, Pai, Yung-Min, additional, Chen, Tzu-Yu, additional, Tsai, Chun-Lin, additional, Yang, Ya-Zhu, additional, Sharma, S.K., additional, Sher, Chin-Wei, additional, Chen, Zhong, additional, Lee, Po-Tseng, additional, Chung, Shu-Ru, additional, and Kuo, Hao-Chung, additional

Published
2019
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9. Hybrid-type white LEDs based on inorganic halide perovskite QDs: candidates for wide color gamut display backlights

Author

Lin, Chih-Hao, primary, Verma, Akta, additional, Kang, Chieh-Yu, additional, Pai, Yung-Min, additional, Chen, Tzu-Yu, additional, Yang, Jin-Jia, additional, Sher, Chin-Wei, additional, Yang, Ya-Zhu, additional, Lee, Po-Tsung, additional, Lin, Chien-Chung, additional, Wu, Yu-Chuan, additional, Sharma, S. K., additional, Wu, Tingzhu, additional, Chung, Shu-Ru, additional, and Kuo, Hao-Chung, additional

Published
2019
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15. Formation of self-organized platinum nanoparticles and their microphotoluminescence enhancement in the visible light region.

Author

Kang, Chieh-Yu, Chao, Cha-Hsin, Shiu, Shu-Chia, Chou, Li-Jen, Chang, Mu-Tung, Lin, Gong-Ru, and Lin, Ching-Fuh

Subjects
*NANOPARTICLES, *THIN films, *SPECTRAL analysis (Phonetics), *ANNEALING of crystals, *PLATINUM compounds, *PHOTOLUMINESCENCE
Abstract

Formation of Pt nanoparticles or nanoisland films as a function of annealing temperature, initial thickness, underlying substrates, and annealing process is investigated. Using microphotoluminescence (PL) measurement, we find great enhancement of self-emission in visible spectrum from Pt nanoparticles. The integral intensity of the micro-PL of the 49.38 nm Pt nanoparticles is 38 times of that of the Pt thin film. In addition, the peak wavelength varies from 554 to 615 nm as the surface morphology of Pt changes due to different annealing parameters. Spectral analyses suggest that this enhancement of micro-PL from Pt is due to the local field enhancement mechanism analogous to that of PL from noble metals. [ABSTRACT FROM AUTHOR]

Published
2007
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16. Broadband Cr3+, Sn4+‐Doped Oxide Nanophosphors for Infrared Mini Light‐Emitting Diodes.

Author

Huang, Wen‐Tse, Cheng, Chiao‐Ling, Bao, Zhen, Yang, Chia‐Wei, Lu, Kuang‐Mao, Kang, Chieh‐Yu, Lin, Chih‐Min, and Liu, Ru‐Shi

Subjects
LIGHT emitting diodes, SILICA nanoparticles, NANOCARRIERS, PHOSPHORS, NEAR infrared spectroscopy
Abstract

Light‐emitting diodes break barriers of size and performance for displays. With devices becoming smaller, the materials also need to get smaller. Chromium(III)‐doped oxide phosphors, which emit near‐infrared (NIR) light, have recently been used in small electronic devices. In this work, mesoporous silica nanoparticles were used as nanocarriers. The nanophosphor ZnGa2O4:Cr3+,Sn4+ formed in the mesopore after sintering. Good dispersity and morphology were performed with average diameters of 71±7 nm. It emitted light at 600–850 nm; the intensity was optimized by tuning the doping ratio of Cr3+ and Sn4+. Meanwhile, the light conversion efficiency increased from 7.8 % to 37 % and the molar concentration increased from 0.125 m to 0.5 m. The higher radiant flux of 3.3 mW was obtained by operating an input current of 45 mA. However, the NIR nanophosphor showed good performance on mini light‐emitting diode chips. Nanophosphors on display: Mesoporous silica nanoparticles were used as nanocarriers to form the nanophosphor ZnGa2O4:Cr3+,Sn4+ (ZGOCS) in the mesoporous structure after sintering. Good dispersity and morphology can be observed. Good packing density and light conversion efficiency were achieved for a mini‐light emitting diode. [ABSTRACT FROM AUTHOR]

Published
2019
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17. Broadband Cr 3+ , Sn 4+ -Doped Oxide Nanophosphors for Infrared Mini Light-Emitting Diodes.

Author

Huang WT, Cheng CL, Bao Z, Yang CW, Lu KM, Kang CY, Lin CM, and Liu RS

Abstract

Light-emitting diodes break barriers of size and performance for displays. With devices becoming smaller, the materials also need to get smaller. Chromium(III)-doped oxide phosphors, which emit near-infrared (NIR) light, have recently been used in small electronic devices. In this work, mesoporous silica nanoparticles were used as nanocarriers. The nanophosphor ZnGa 2 O 4 :Cr 3+ ,Sn 4+ formed in the mesopore after sintering. Good dispersity and morphology were performed with average diameters of 71±7 nm. It emitted light at 600-850 nm; the intensity was optimized by tuning the doping ratio of Cr 3+ and Sn 4+ . Meanwhile, the light conversion efficiency increased from 7.8 % to 37 % and the molar concentration increased from 0.125 m to 0.5 m. The higher radiant flux of 3.3 mW was obtained by operating an input current of 45 mA. However, the NIR nanophosphor showed good performance on mini light-emitting diode chips., (© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2019
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