3 records from EconBiz based on author Name

1. Solving the patient admission scheduling problem using constraint aggregation

Liu, Haichao; Wang, Yang; Hao, Jin-Kao;
2024
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link

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2. A three-phase matheuristic algorithm for the multi-day task assignment problem

Wang, Yang; Liu, Haichao; Peng, Bo; Wang, Haibo; Punnen, Abraham P.;
2023
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link

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3. Highly Efficient Hybridized Local and Charge-Transfer (Hlct) Deep-Blue Electroluminescence with Excellent Molecular Horizontal Orientation

abstract

Efficient deep-blue emitters with nice color purity are fundamental in organic light-emitting diode (OLED) applications. Herein, we report two phenanthroimidazole (PPI) derivative deep-blue emitters ( DP , SP ) with hybrid local and charge-transfer (HLCT) properties of high photoluminescence quantum yield (PLQY) and nice color purity. More importantly, the horizontal dipole orientation (Θ // ) of them are both superior to the isotropic emitters (66.7%), especially the Θ // of SP is 89.5%, which can greatly improve its OLED performance. As a result, non-doped OLED of SP exhibits deep-blue emission with Commission Internationale de lEclairage (CIE) coordinate of (0.158, 0.068) and maximum external quantum efficiency (EQE max ) of 11.3%, which is nearly twice that of DP and is one of the best results among the non-delayed, non-doped deep-blue fluorescent OLEDs. Furthermore, SP -based doped OLED displays an excellent performance of near ultraviolet (NUV) emission at 406 nm with CIE coordinate of (0.157, 0.046) and EQE max of 7.5%, which is also a competitive result in the materials with comparable NUV OLED applications

Zhang, Shi-Tong; Xiao, Shengbing; Gao, Ying; Wang, Runze; Liu, Haichao; weijun, li; Zhou, Changjiang; Xue, Shanfeng; Yang, Bing; Ma, Yuguang;
2022
Availability: Link

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