Y Kim

Control of Excitonic Energy Transfer in RGB Quantum Dot:Polymer Composites for Tunable White Emission

Abhishek Sharma, Awnish Kumar Tripathi, Joonghoon Choi, Sang Hyun Yoon et autres

Tint-controlled white light is crucial for both illumination systems and display applications. Here, we demonstrate solution-processed quantum-dot light-emitting diodes (QD-LEDs) featuring a red–green–blue (RGB) QD–poly(methyl methacrylate) (PMMA) composite emissive layer (EML) for tunable white electroluminescence (EL). In this composite EML, PMMA functions …

kr, in, jp, us (code pays fourni par la source)

Solid Cherenkov detector for studying nucleosynthesis in inertial confinement fusion

Michael Springstead, Alex B. Zylstra, Y Kim, Kevin D. Meaney et autres

Measuring gamma rays emitted from nuclear reactions gives insight into their nuclear structure. Notably, there are several nuclear reactions that produce gamma rays at ∼1 MeV–3 MeV energies such as T(4He, γ)7Li, 4He(3He, γ)7Be, and 12C(p, γ)13N, which may solve questions lingering …

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Dynamic high energy density plasma environments at the National Ignition Facility for nuclear science research

Ch. Cerjan, L. A. Bernstein, Laura Berzak Hopkins, R. M. Bionta et autres

Abstract The generation of dynamic high energy density plasmas in the pico- to nano-second time domain at high-energy laser facilities affords unprecedented nuclear science research possibilities. At the National Ignition Facility (NIF), the primary goal of inertial confinement fusion research has led …

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Gamma Ray Measurements at OMEGA with the Newest Gas Cherenkov Detector “GCD-3”

A. M. McEvoy, Hans W. Herrmann, Y Kim, Alex B. Zylstra et autres

Initial results from the newest Gas Cherenkov Detector (GCD-3) are reported demonstrating improved performance over previous GCD iterations. Increased shielding and lengthening of the Cherenkov photon optical path have resulted in a diminished precursor signal with increased temporal separation between the precursor …

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Direct-drive DT implosions with Knudsen number variations

Y Kim, Hans W. Herrmann, Nelson M. Hoffman, Mark Schmitt et autres

Direct-drive implosions of DT-filled plastic-shells have been conducted at the Omega laser facility, measuring nuclear yields while varying Knudsen numbers (i.e., the ratio of mean free path of fusing ions to the length of fuel region) by adjusting both shell thickness (e.g., …

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Measurement of DT fusion and neutron-induced gamma-rays using gas Cherenkov Detector

Y Kim, Hans W. Herrmann, Scott Evans, T. J. Sedillo et autres

A secondary gamma experiment was carried out using a Gas Cherenkov Detector (GCD) at the OMEGA laser facility. The primary experimental objective was to simulate neutron-induced secondary gamma production (n-γ) from a NIF implosion capsule, hohlraum, and thermo-mechanical package. The high-band width …

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High-pressure and high-magnetic-field study of energy transfer from excitons into local d electrons in a CdTe/(Cd, Mn)Te quantum well structure

Hiroyuki Yokoi, Youzou Kakudate, Shinji Fujiwara, Stanley W. Tozer et autres

Photoluminescence measurements have been conducted for a CdTe/Cd 1- x Mn x Te ( x = 0.4) single-quantum-well structure at low temperatures under pressures to 0.49 GPa and magnetic fields to 60 T. At the ambient pressure, a new emission was induced …

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Interface local spin states in a CdTe/(Cd, Mn)Te quantum well

Yu. G. Semenov, Hiroyuki Yokoi, Youzou Kakudate, S. Takeyama et autres

ua, jp, us, pl (code pays fourni par la source)

Magnetic field induced recovery of exciton photoluminescence extinguished by pressure in a CdTe/CdMnTe single quantum well

Hiroyuki Yokoi, Stanley W. Tozer, Y Kim, Youzou Kakudate et autres

jp, us, pl (code pays fourni par la source)

Pressure effect on the exchange interaction in the interface region of a CdTe/CdMnTe quantum-well structure

Hiroyuki Yokoi, Stan W. Tozer, Y Kim, S. Takeyama et autres

jp, us, pl (code pays fourni par la source)

Observation of a discontinuous red-shift in the emission spectrum of a two-dimensional electron gas

X.Y Lee, H. W. Jiang, Y Kim, William J Schaff

us (code pays fourni par la source)