To Accelerate or Decelerate in the Light-emitting Process of Zinc-Oxide Crystals (IMAGE)

Tohoku University

To Accelerate or Decelerate in the Light-emitting Process of Zinc-Oxide Crystals

Caption

The IQE curve obtained by the ODPL spectroscopy (left). The Y axis represents the IQE percentage, the lower X axis represents the excitation light power density Pcw (W cm<sup>-2</sup>) whilst the upper X axis represents the excitation rate G (sec<sup>-1</sup> cm<sup>-2</sup>). The separated light-emitting rate (W<sub>R</sub>) and non-light-emitting rate (W<sub>NR</sub>) (right). The Y axis represents the inverse of rate (ns), the lower X axis represents the excitation light power density P<sub>pulse</sub> (nJ/cm<sup>2</sup>) whilst the upper X axis represents the excited carrier concentration n<sub>ini</sub> (cm<sup>-2</sup>).

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Tohoku University

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