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8 results on '"Yong Hui Lee"'

1. Low-Density Lipoprotein Cholesterol and Mortality in Patients With Intracerebral Hemorrhage in Taiwan

Author

Chi-Pang Wen, Yi-Che Lee, Yuan-Ting Sun, Chih-Yuan Huang, Chon-Haw Tsai, Po-Lin Chen, Wei-Lun Chang, Po-Yen Yeh, Cheng-Yu Wei, Ming-Jun Tsai, Yu Sun, Chih-Hao Lin, Jiunn-Tay Lee, Ta-Chang Lai, Li-Ming Lien, Mei-Chen Lin, Cheng-Li Lin, June-Han Lee, Hao-Kuang Wang, Chung Y. Hsu, Taiwan Stroke Registry Investigators, Chung-Hsiang Liu, Wei-Shih Huang, Chung-Ta Lu, Tzung-Chang Tsai, Chun-Hung Tseng, Kang-Hsu Lin, Woei-Cherng Shyn, Yu-Wan Yang, Yen-Liang Liu, Der-Yang Cho, Chun-Chung Chen, Shih-Pin Hsu, Han-Jung Chen, Cheng-Sen Chang, Hung-Chang Kuo, Lian-Hui Lee, Huan-Wen Tsui, Jung-Chi Tsou, Yan-Tang Wang, Yi-Cheng Tai, Kun-Chang Tsai, Yen-Wen Chen, Kang Lu, Po-Chao Liliang, Yu-Tun Tsai, Cheng-Loong Liang, Kuo-Wei Wang, Jui-Sheng Chen, Po-Yuan Chen, Cien-Leong Chye, Wei-Jie Tzeng, Pei-Hua Wu, Chih-Hung Chen, Han-Chieh Hsieh, Hui-Chen Su, Yu-Shan Lee, Hsin-Yi Chi, Chou-Hsiung Pan, Po-Chi Chan, Min-Hsien Hsu, Ya-Ying Wu, Zhi-Zang Huang, Hai-Ming Shoung, Yi-Chen Lo, Fu-Hwa Wang, Chien-Chung Chen, Yu-Tai Tsai, Ko-Yi Wang, Tzu-Hsuan Huang, Chao-Nan Yang, Chao-Hsien Hung, Ian Shih, Hsin-Yi Kao, Chien-Jung Lu, Cheng-Huai Lin, Chieh-Cheng Huang, Chang-Hsiu Liu, Hoi-Fong Chan, Ping-Kun Chen, Pai-Yi Chiu, Jiann-Chyun Lin, Yaw-Don Hsu, Jong-Chyou Denq, Giia-Sheun Peng, Chang-Hung Hsu, Chun-Chieh Lin, Che-Hung Yen, Chun-An Cheng, Yueh-Feng Sung, Yuan-Liang Chen, Ming-Tung Lien, Chung-Hsing Chou, Chia-Chen Liu, Fu-Chi Yang, Yi-Chung Wu, An-Chen Tso, Yu-Hua Lai, Chun-I Chiang, Chia-Kuang Tsai, Meng-Ta Liu, Ying-Che Lin, Yu-Chuan Hsu, Jiu-Haw Yin, Chung-JenWang, Kai-ChenWang, Li-Mei Chen, Hou-Chang Chiu, Wei-Hung Chen, Chyi-Huey Bai, Chi-Ieong Lau, Hsu-Ling Yeh, Anna Chang, Jiann-Shing Jeng, Sung-Chun Tang, Li-Kai Tsai, Shin-Joe Yeh, Ching-Huang Lin, Cheng-Chang Yen, Ruey-Tay Lin, Chun-Hung Chen, Gim-Thean Khor, A-Ching Chao, Hsiu-Fen Lin, Poyin Huang, Huey-Juan Lin, Der-Shin Ke, Chia-Yu Chang, Poh-Shiow Yeh, Kao-Chang Lin, Tain-Junn Cheng, Chih-Ho Chou, Chun-Ming Yang, Hsiu-Chu Shen, An-Chih Chen, Shih-Jei Tsai, Tsong-Ming Lu, Sheng-Ling Kung, Mei-Ju Lee, Hsi-Hsien Chou, Siu-Pak Lee, Ming-Hui Sun, Li-Ying Ke, Sheng-Feng Sung, Cheung-Ter Ong, Chi-Shun Wu, Yu-Hsiang Su, Ling-Chien Hung, Tsuey-Ru Chiang, Mei-Ching Lee, Pai-Hao Huang, Sian-King Lie, Pin-Wen Liao, Jen-Tse Chen, Mu-Chien Sun, Tien-Pao Lai, Wei-Liang Chen, Yen-Chun Chen, Ta-Cheng Chen, Wen-Fu Wang, Kwo-Whei Lee, Chen-Shu Chang, Chien-Hsu Lai, Siao-Ya Shih, Chieh-Sen Chuang, Yen-Yu Chen, Chien-Min Chen, Shinn-Kuang Lin, Yu-Chin Su, Cheng-Lun Hsiao, Fu-Yi Yang, Chih-Yang Liu, Han-Lin Chiang, Ser-Chen Fu, Chun-Yuan Chang, I-sheng Lin, Chung-Hsien Chien, Yang-Chuang Chang, Yu-Jen Hsiao, Chen-Wen Fang, Yu-Wei Chen, Kuo-Ying Lee, Yun-Yu Lin, Chen-Hua Li, Hui-Fen Tsai, Chuan-Fa Hsieh, Chih-Dong Yang, Shiumn-Jen Liaw, How-Chin Liao, Shoou-Jeng Yeh, Liang-Po Hsieh, Yong-Hui Lee, Chung-Wen Chen, Chih-Shan Hsu, Ye-Jian-Jhih, Hao-Yu Zhuang, Yan-Hong Pan, Shin-An Shih, Chin-I Chen, Jia-Ying Sung, Hsing-Yu Weng, Hao-Wen Teng, Jing-Er Lee, Chih-Shan Huang, Shu-Ping Chao, Rey-Yue Yuan, Jau-Jiuan Sheu, Jia-Ming Yu, Chun-Sum Ho, Ting-Chun Lin, Shih-Chieh Yu, Jiunn-Rong Chen, Song-Yen Tsai, Hung-Pin Tseng, Chin-Hsiung Liu, Chun-Liang Lin, Hung-Chih Lin, Pi-Tzu Chen, Chaur-Jong Hu, Nai-Fang Chi, Lung Chan, Chang-Ming Chern, Chun-Jen Lin, Shuu-Jiun Wang, Li-Chi Hsu, Wen-Jang Wong, I-Hui Lee, Der-Jen Yen, Ching-Piao Tsai, Shang-Yeong Kwan, Bing-Wen Soong, Shih-Pin Chen, Kwong-Kum Liao, Kung-Ping Lin, Chien Chen, Din-E Shan, Jong-Ling Fuh, Pei-Ning Wang, Yi-Chung Lee, Yu-Hsiang Yu, Hui-Chi Huang, Jui-Yao Tsai, Ming-Hsiu Wu, Shi-Cheng Chen, Chiung-Yao Wang, Ming-Chin Hsu, Tsang-Shan Chen, Ping-Keung Yip, Vinchi Wang, Kaw-ChenWang, Chung-Fen Tsai, Chao-Ching Chen, Chih-Hao Chen, Yi-Chien Liu, Shao-Yuan Chen, Zi-Hao Zhao, Zhi-Peng Wei, Shey-Lin Wu, Ching-Kuan Liu, Ryh-Huei Lin, Ching-Hua Chu, Sui-Hing Yan, Yi-Chun Lin, Pei-Yun Chen, Sheng-Huang Hsiao, Bak-Sau Yip, Pei-Chun Tsai, Ping-Chen Chou, Tsam-Ming Kuo, Yi-Chen Lee, Yi-Pin Chiu, and Yi-Sheng Liao

Subjects
stroke, ICH, LDL, Taiwan Stroke Registry, mortality, proportional hazards regression analysis, Neurology. Diseases of the nervous system, RC346-429
Abstract

Objective: Lower serum low-density lipoprotein cholesterol (LDL-C) levels are associated with increased intracerebral hemorrhage (ICH) risk. However, reverse causality and residual confounding has not attracted public attention. Therefore, we assessed whether people with LDL-C have increased risk of mortality adjusting for potential confounders using two large Taiwan cohorts.Methods: The Mei-Jhao (MJ) cohort has 414,372 adults participating in a medical screening program with 378 ICH deaths within 15 years of follow-up (1994–2008). Cox proportional hazards regressions estimated hazard death ratios according to LDL-C levels. We identified 4,606 ICH patients from the Taiwan Stroke Registry (TSR) and analyzed the impact of LDL-C on 3-month mortality.Results: Low cholesterol (LDL-C

Published
2022
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2. Discrete photoelectrodes with dyes having different absorption wavelengths for efficient cobalt-based tandem dye-sensitised solar cells

Author

Phuong Ho, Suresh Thogiti, Yong Hui Lee, and Jae Hong Kim

Subjects
Medicine, Science
Abstract

Abstract A pn-tandem dye-sensitised solar cell (pn-DSSC) employing a set of sensitisers with complementary absorption spectra and a less-corrosive cobalt-based electrolyte is presented. We applied three organic sensitisers (denoted C343, DCBZ, and SQ) featuring different absorption wavelengths for the p-DSSC, while keeping the n-DSSC sensitiser (denoted DCA10CN2) constant. Characterisation of the Co+2/+3-based DSSC devices revealed that SQ dye, with a longer absorption wavelength, showed broader spectra and increased photocurrent activity in the visible and near-infrared region compared to the other two devices with C343 and DCBZ in the pn-DSSCs. As a result, the short-circuit current density increased significantly to 4.00 mA cm−2, and the devices displayed overall power conversion efficiencies of as high as 1.41%, which is comparable to that of the best pn-DSSCs in the literature. Our results demonstrate that complementary absorption between the two photoelectrodes is important for enhancing the photovoltaic performance of pn-DSSCs.

Published
2017
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3. Ionic polarization-induced current–voltage hysteresis in CH3NH3PbX3 perovskite solar cells

Author

Simone Meloni, Thomas Moehl, Wolfgang Tress, Marius Franckevičius, Michael Saliba, Yong Hui Lee, Peng Gao, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Ursula Rothlisberger, and Michael Graetzel

Subjects
Science
Abstract

The origin of hysteresis remains an open question in lead-halide perovskite solar cells. Here, Meloni et al. investigate the causes of hysteresis using an experimental and computational approach, finding that the observed hysteresis is due to halide ion-vacancy movement in the perovskite.

Published
2016
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4. Ionic polarization-induced current–voltage hysteresis in CH3NH3PbX3 perovskite solar cells

Author

Ursula Rothlisberger, Michael Saliba, Yong Hui Lee, Peng Gao, Wolfgang Tress, Marius Franckevičius, Shaik M. Zakeeruddin, Thomas Moehl, Mohammad Khaja Nazeeruddin, Simone Meloni, and Michael Graetzel

Subjects
separation, Science, General Physics and Astronomy, Halide, Nanotechnology, 02 engineering and technology, Activation energy, 010402 general chemistry, Rotation, 7. Clean energy, 01 natural sciences, General Biochemistry, Genetics and Molecular Biology, Article, NO, Condensed Matter::Materials Science, Vacancy defect, tin, Condensed Matter::Superconductivity, evolution, Physics::Atomic and Molecular Clusters, biochemistry, Physics::Chemical Physics, Perovskite (structure), Physics, High-performance, Multidisciplinary, business.industry, genetics and molecular biology (all), General Chemistry, 021001 nanoscience & nanotechnology, Ferroelectricity, efficiency, photodetectors, conductivity, impedance, transport, 0104 chemical sciences, chemistry (all), Hysteresis, Semiconductor, Chemical physics, Condensed Matter::Strongly Correlated Electrons, biochemistry, genetics and molecular biology (all), high-performance, 0210 nano-technology, business
Abstract

CH3NH3PbX3 (MAPbX3) perovskites have attracted considerable attention as absorber materials for solar light harvesting, reaching solar to power conversion efficiencies above 20%. In spite of the rapid evolution of the efficiencies, the understanding of basic properties of these semiconductors is still ongoing. One phenomenon with so far unclear origin is the so-called hysteresis in the current–voltage characteristics of these solar cells. Here we investigate the origin of this phenomenon with a combined experimental and computational approach. Experimentally the activation energy for the hysteretic process is determined and compared with the computational results. First-principles simulations show that the timescale for MA+ rotation excludes a MA-related ferroelectric effect as possible origin for the observed hysteresis. On the other hand, the computationally determined activation energies for halide ion (vacancy) migration are in excellent agreement with the experimentally determined values, suggesting that the migration of this species causes the observed hysteretic behaviour of these solar cells., The origin of hysteresis remains an open question in lead-halide perovskite solar cells. Here, Meloni et al. investigate the causes of hysteresis using an experimental and computational approach, finding that the observed hysteresis is due to halide ion-vacancy movement in the perovskite.

Published
2016

5. Perovskite solar cells employing organic charge-transport layers

Author

Aswani Yella, Olga Malinkiewicz, Henk J. Bolink, Mohammad Khaja Nazeeruddin, Guillermo Mínguez Espallargas, Yong Hui Lee, and Michael Graetzel

Subjects
chemistry.chemical_classification, Materials science, Chemical engineering, chemistry, Iodide, technology, industry, and agriculture, Sublimation (phase transition), Hybrid solar cell, Quantum dot solar cell, 7. Clean energy, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Abstract

Thin-film photovoltaics play an important role in the quest for clean renewable energy. Recently, methylammonium lead halide perovskites were identified as promising absorbers for solar cells(1). In the three years since, the performance of perovskite-based solar cells has improved rapidly to reach efficiencies as high as 15%(1-10). To date, all high-efficiency perovskite solar cells reported make use of a (mesoscopic) metal oxide, such as Al2O3, TiO2, or ZrO2, which requires a high-temperature sintering process. Here, we show that methylammonium lead iodide perovskite layers, when sandwiched between two thin organic charge-transporting layers, also lead to solar cells with high power-conversion efficiencies (12%). To ensure a high purity, the perovskite layers were prepared by sublimation in a high-vacuum chamber. This simple planar device structure and the room-temperature deposition processes are suitable for many conducting substrates, including plastic and textiles.

Published
2013
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7. Quantum-Dot-Sensitized Solar Cells Fabricated by the Combined Process of the Direct Attachment of Colloidal CdSe Quantum Dots Having a ZnS Glue Layer and Spray Pyrolysis Deposition.

Author

Sang Hyuk Im, Yong Hui Lee, Sang Il Seok, Sung Woo Kim, and Sang-Wook Kim

Subjects
*QUANTUM dots, *SOLAR cells, *MICROFABRICATION, *CADMIUM selenide, *GLUE, *ZINC sulfide, *SPRAYING, *PYROLYSIS, *THERMAL analysis
Abstract

We were able to attach CdSe quantum dots (QDs) having a ZnS inorganic glue layer directly to a mesoporous TiO2(mp-TiO2) surface by spray coating and thermal annealing. Quantum-dot-sensitized solar cells based on CdSe QDs having ZnS as the inorganic glue layer could easily transport generated charge carriers because of the intimate bonding between CdSe and mp-TiO2. The application of spray pyrolysis deposition (SPD) to obtain additional CdSe layers improved the performance characteristics to Voc= 0.45 V, Jsc= 10.7 mA/cm2, fill factor = 35.8%, and power conversion efficiency = 1.7%. Furthermore, ZnS post-treatment improved the device performance to Voc= 0.57 V, Jsc= 11.2 mA/cm2, fill factor = 35.4%, and power conversion efficiency = 2.2%. [ABSTRACT FROM AUTHOR]

Published
2010
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