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Alex K.-Y. Jen
Researcher at City University of Hong Kong
Publications - 973
Citations - 72195
Alex K.-Y. Jen is an academic researcher from City University of Hong Kong. The author has contributed to research in topics: Perovskite (structure) & Polymer. The author has an hindex of 128, co-authored 921 publications receiving 61811 citations. Previous affiliations of Alex K.-Y. Jen include University of Nebraska–Lincoln & Zhejiang California International NanoSystems Institute.
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Push–pull tetraene chromophores derived from dialkylaminophenyl, tetrahydroquinolinyl and julolidinyl moieties: optimization of second-order optical nonlinearity by fine-tuning the strength of electron-donating groups
TL;DR: A series of highly polarizable chromophores 1−3 have been synthesized based on three different types of electron donors, including diethylaminophenyl, tetrahydroquinolinyl and julolidinyl groups respectively, with the same isophorone-derived tetraene bridges and strong CF3-TCF acceptors as mentioned in this paper.
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Improved thin film morphology and bulk-heterojunction solar cell performance through systematic tuning of the surface energy of conjugated polymers
Ying Sun,Ying Sun,Chien Shang-Chieh,Chien Shang-Chieh,Hin-Lap Yip,Kung-Shih Chen,Yong Zhang,Joshua A. Davies,Fang-Chung Chen,Baoping Lin,Alex K.-Y. Jen +10 more
TL;DR: In this paper, a detailed model study has shown that thin film morphology and bulk-heterojunction solar cell performance can be significantly improved by systematic tuning of the surface energy of the conjugated donor polymer through side-chain functionalization.
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Organic electro-optic modulator using transparent conducting oxides as electrodes
Guoyang Xu,Zhifu Liu,Jing Ma,Boyang Liu,Seng-Tiong Ho,Lian Wang,Peiwang Zhu,Tobin J. Marks,Jingdong Luo,Alex K.-Y. Jen +9 more
TL;DR: A novel organic electro-optic modulator using transparent conducting oxides (ZnO and In2O3) as electrodes is demonstrated for the first time and the figure of merit normalized for the EO coefficient is 1.1V-cm/(35pm/V), which is 3-4x lower than that can be achieved with a convetional modulator structure.
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Replica-molded electro-optic polymer Mach–Zehnder modulator
TL;DR: In this paper, a Mach-Zehnder electro-optic polymer amplitude modulator is fabricated by a simple and high-throughput soft-stamp replica-molding technique.
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Low-voltage organic thin-film transistors with π-σ-phosphonic acid molecular dielectric monolayers
Hong Ma,Orb Acton,Guy Ting,Jae-Won Ka,Hin-Lap Yip,Neil M. Tucker,Richard Schofield,Alex K.-Y. Jen +7 more
TL;DR: Pentacene-based organic thin-film transistors (OTFTs) have been fabricated using π-σ-phosphonic acid self-assembled monolayers (SAMs) on top of aluminum oxide as the gate dielectrics as discussed by the authors.