Dynamic Photoluminescence Lifetime Imaging for Injection-dependent Lifetime Measurements

Fluorescence lifetime measurements and biological imaging.

6.4.1. Transition Metal Luminescent Complexes 2669 6.4.2. Metalloporphyrins 2669 6.4.3. Lanthanide Complexes 2670 6.4.4. Upconversion 2671 7. Fluorescence Lifetime Imaging Applications 2671 7.1. Cell Biology 2672 7.2. Tissue and Small Animal Lifetime Imaging 2672 7.2.1. Imaging of Cancer 2672 7.2.2. Diabetes and Kidney Pathologies 2674 7.2.3. Brain Tissue Analysis 2674 7.2.4. Blood Pathologies ...

Excitation dependent photoluminescence measurements of the nonradiative lifetime and quantum efficiency in GaAs

Lifetime Measurements in 178Hf

Lifetimes of levels from K(π) = 2(+), K(π) = 4(+) and several K(π) = 0(+) bands have been measured in the (178)Hf nucleus using the GRID technique. Lifetimes of the 2(+) and 3(+) levels were measured within the K(π) = 2(+) γ band. A lower limit was established for the lifetime of the 4(+) level of the K(π) = 4(+) band. The resulting upper limits for the absolute B(E2) values exclude collective ...

Lifetime measurements in Tl

Lifetimes are reported for the 6s6p P1, 6s6d D2 and 6s7s S0 levels in Hg-like Tl II, measured using beam-foil excitation. The values obtained were τ(P1) = 0.59 ± 0.02 ns, τ(P1) = 39 ± 2 ns, τ(D2) = 6.5 ± 0.5 ns, and τ(S0) = 3.0 ± 0.4 ns. Isoelectronic trends for line strengths of the resonance and intercombination transitions are studied through comparisons with earlier measurements for Hg I–Bi...

Trends in Lifetime Measurements

The interpretation of lifetime measurements and new characterization techniques are addressed in this paper. Parameters such as surface/interface recombination, sample thickness, and injection level are discussed. Novel characterization techniques using frequency-dependent capacitance, conductance, or impedance measurements are described and are shown to be useful for thin layer, e.g., epitaxia...