K
Kok Wai Cheah
Researcher at Hong Kong Baptist University
Publications - 273
Citations - 11751
Kok Wai Cheah is an academic researcher from Hong Kong Baptist University. The author has contributed to research in topics: Photoluminescence & OLED. The author has an hindex of 48, co-authored 270 publications receiving 10627 citations. Previous affiliations of Kok Wai Cheah include City University of Hong Kong & East China University of Science and Technology.
Papers
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Journal ArticleDOI
Angular dependence of the emission from low Q-factor organic microcavity light emitting diodes
C. H. Cheung,Alan Man Ching Ng,Aleksandra B. Djurišić,Zhengtong Liu,C. Y. Kwong,Po Ching Chui,Hl L. Tam,Kok Wai Cheah,W. K. Chan,Joseph Chan,Albert W. Lu,Aleksandar D. Rakić +11 more
TL;DR: It is demonstrated that for different organic layer thicknesses qualitatively different emission wavelength dependences on the viewing angle can be obtained in microcavity devices consisting of two organic layers, N,N′-di(naphthalene-1-yl)-N,N″-diphenylbenzidine (NPB) as a hole transport layer and Alq3 as emitting layer.
Journal ArticleDOI
Near field imaging from multilayer lens
TL;DR: Ag-SiO2 multilayer lens shows higher transmittance and image contrast than the single silver layer device, the experimental result proves the theoretical calculation.
Posted ContentDOI
Transcending the gain bandwidth limitation in semiconductors for full-colour-tunable lasers
TL;DR: Yi Jiang Hong Kong Baptist University Qi Wei University of Macau https://orcid.org/0000-0002-5322-3692 King Fai Li Hong Kong Bapt University Mingke Jin Southern University of Science and Technology Hoi Lam Tam Hong Kong Protestant University Guixin Li Southern UniversityofScience and Technology.