Investigation of Cavity Enhanced XEOL of a Single ZnO Microrod by Using Multifunctional Hard X-ray Nanoprobe

Abstract

The multifunctional hard X-ray nanoprobe at Taiwan Photon Source (TPS) exhibits the excellent ability to simultaneously characterize the X-ray absorption, X-ray excited optical luminescence (XEOL) as well as the dynamics of XEOL of materials. Combining the scanning electron microscope (SEM) into the TPS 23A end-station, we can easily and quickly measure the optical properties to map out the morphology of a ZnO microrod. A special phenomenon has been observed that the oscillations in the XEOL associated with the confinement of the optical photons in the single ZnO microrod shows dramatical increase while the X-ray excitation energy is set across the Zn K-edge. Besides having the nano-scale spatial resolution, the synchrotron source also gives a good temporal domain measurement to investigate the luminescence dynamic process. The decay lifetimes of different emission wavelengths and can be simultaneously obtained from the streak image. Besides, SEM can provide the cathodoluminescence (CL) to be a complementary method to analyze the emission properties of materials, we anticipate that the X-ray nanoprobe will open new avenues with great characterization ability for developing nano/microsized optoelectronic devices.

Modulation of Magnetic and Luminescence Properties via Control Cu-Doped in CdWO4 Nanorods for Photocatalytic Applications

“…In this work, with an advanced X-ray nanoprobe, we demonstrated the role of substituted Cu 2+ ions at the Cd 2+ site in CdWO 4 on luminescence by XEOL enhancement after X-ray irradiation. Figure S10 (Supporting Information) shows the schematic of the experimental setup and different function details discussed elsewhere. , The uses of synchrotron radiation allowed the preferential excitation of the core electron of the elements under investigation (here W and Cu) at energies near their absorption edges to excite the core electrons. Also, the nanoprobe can provide a colossal X-ray dose into the point of interest on the sample.…”

Element Effects on High-Entropy Alloy Vacancy and Heterogeneous Lattice Distortion Subjected to Quasi-equilibrium Heating

“…The X-ray nanoprobe (XNP) at TPS 23 with a 100 nm spatial resolution was used for the complimentary chemical distributions 60 . The energy of the incident X-rays was 12.8 keV, well above the k-edge absorption energies of the constituent elements of the specimens.…”

Hard X-ray ptychography at Taiwan Photon Source at 11–20 nm spatial resolution

“…The measurements of Fig. 1(b) were conducted in TPS 23A1, in which the beam was focused with a pair of nested Montel mirrors (Yin et al, 2016;Chen et al, 2018;Lee et al, 2018;Lin et al, 2019Lin et al, , 2020. During the experiment, the photon energy was 6 keV, and beam sizes at the focal plane were approximately 100 nm  200 nm in the horizontal and vertical directions, respectively, while the distance between the sample and detector was 1 m (the detector used here was from the Eiger 1M series, with a pixel size of 75 mm  75 mm, manufactured by DECTRIS Ltd).…”