H
Hoi Sing Kwok
Researcher at Hong Kong University of Science and Technology
Publications - 1207
Citations - 32982
Hoi Sing Kwok is an academic researcher from Hong Kong University of Science and Technology. The author has contributed to research in topics: Liquid crystal & Thin-film transistor. The author has an hindex of 77, co-authored 1165 publications receiving 29448 citations. Previous affiliations of Hoi Sing Kwok include University of Hong Kong & University of California, Berkeley.
Papers
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Aggregation-induced emission of 1-methyl-1,2,3,4,5-pentaphenylsilole
Jingdong Luo,Zhiliang Xie,Jacky W. Y. Lam,Lin Cheng,Haiying Chen,Chengfeng Qiu,Hoi Sing Kwok,Xiaowei Zhan,Yunqi Liu,Daoben Zhu,Ben Zhong Tang +10 more
TL;DR: Aggregation greatly boosts emission efficiency of the silole, turning it from a weak luminophor into a strong emitter.
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Changing the behavior of chromophores from aggregation-caused quenching to aggregation-induced emission: development of highly efficient light emitters in the solid state.
Wang Zhang Yuan,Ping Lu,Shuming Chen,Jacky Wing Yip Lam,Zhiming Wang,Yang Liu,Hoi Sing Kwok,Yuguang Ma,Ben Zhong Tang,Ben Zhong Tang +9 more
TL;DR: A win‐win strategy would be the elimination of the ACQ effect without sacrificing other functional properties of the luminophores, in the work reported here, which has developed a new approach.
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Blueshift of optical band gap in ZnO thin films grown by metal-organic chemical-vapor deposition
TL;DR: The optical band gap of ZnO thin films deposited on fused quartz by metal-organic chemical-vapor deposition was studied in this article, where X-ray diffraction measurements showed that samples deposited at low temperatures (<450°C) consisted of amorphous and crystalline phases.
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Optical properties of epitaxially grown zinc oxide films on sapphire by pulsed laser deposition
Xiao Wei Sun,Hoi Sing Kwok +1 more
TL;DR: In this paper, ZnO thin films were epitaxially grown on c-sapphire substrates by pulsed laser deposition at substrate temperatures of 500-800 °C.
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Aggregation-induced emissions of tetraphenylethene derivatives and their utilities as chemical vapor sensors and in organic light-emitting diodes
Yongqiang Dong,Jacky Wing Yip Lam,Anjun Qin,Jianzhao Liu,Zhen Li,Ben Zhong Tang,Jiaxin Sun,Hoi Sing Kwok +7 more
TL;DR: In this article, nonemissive tetraphenylethene (TPE) 1 and diphenylated derivative 2 were induced to emit intensely by aggregate formation and they were turned on at ∼2.9 and ∼5V and emitted blue lights with maximum luminance of ∼1800 and ∼11000cd∕m2, respectively.