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Dive into the research topics where Lai Qi is active.

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Featured researches published by Lai Qi.


Applied Physics Letters | 2003

Concentration efficiency of doping in phosphors: Investigation of the copper- and aluminum-doped zinc sulfide

Lai Qi; Burtrand I. Lee; Xuejun Gu; M. Grujicic; William D. Samuels; Gregory J. Exarhos

We studied the effect of dopant concentration in ZnS:Cu, Al phosphor. Photoluminescent (PL) intensity of the chemically etched phosphor particles increased up to 140%, which proved the existence of a dopant concentration gradient. Calculation revealed the quantitative relationship between the dopant concentration and the luminescent intensity by relating the concentration gradient to the PL intensity. The result showed that the most efficient concentration is 100 ppm copper and the concentration quenching starts at 152 ppm.


Advanced Materials | 2005

High-Dielectric-Constant Silver–Epoxy Composites as Embedded Dielectrics†

Lai Qi; Burtrand I. Lee; Sihai Chen; William D. Samuels; Gregory J. Exarhos


Journal of Luminescence | 2004

Photoluminescent properties of Y2O3:Eu3+ phosphors prepared via urea precipitation in non-aqueous solution

Yu Sun; Lai Qi; M Lee; Burtrand I. Lee; William D. Samuels; Gregory J. Exarhos


Journal of Luminescence | 2003

Synthesis and characterization of ZnS:Cu,Al phosphor prepared by a chemical solution method

Lai Qi; Burtrand I. Lee; Jong M Kim; Jae E Jang; Jae Y Choe


Journal of The European Ceramic Society | 2004

Short-range dissolution-precipitation crystallization of hydrothermal barium titanate

Lai Qi; Burtrand I. Lee; Prerak Badheka; Dang-Hyok Yoon; William D. Samuels; Gregory J. Exarhos


Materials Letters | 2005

Low-temperature paraelectric–ferroelectric phase transformation in hydrothermal BaTiO3 particles

Lai Qi; Burtrand I. Lee; Prerak Badheka; Li-Qiong Wang; Philip Gilmour; William D. Samuels; Gregory J. Exarhos


Journal of The European Ceramic Society | 2006

Phase transition in barium titanate nanocrystals by chemical treatment

Prerak Badheka; Lai Qi; Burtrand I. Lee


Journal of Applied Polymer Science | 2006

Three‐phase percolative silver–BaTiO3–epoxy nanocomposites with high dielectric constants

Lai Qi; Burtrand I. Lee; William D. Samuels; Gregory J. Exarhos; Sam G. Parler


Archive | 2005

Synthesis and Surface Modification of Zinc Sulfide-Based Phosphors

Lai Qi; Burtrand Lee; Eric Forsythe; David C. Morton


Archive | 2005

Synthesis and Modification of Submicron Barium Titanate Powders

Prerak Badheka; Lai Qi; Dang-Hyok Yoon; Li-Qiong Wang; Burtrand I. Lee; Xinyu Wang

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Gregory J. Exarhos

Pacific Northwest National Laboratory

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William D. Samuels

Pacific Northwest National Laboratory

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Li-Qiong Wang

Pacific Northwest National Laboratory

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M Lee

Clemson University

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