Hydrogen incorporation and gasochromic coloration of tungsten oxide films

Ionoluminescence induced by swift heavy ions in silica and quartz: A comparative analysis

“…The spectra have been in all cases decomposed into four different emission bands, whose peak positions and widths are listed in Table II. All of these bands have been previously reported in the literature and ascribed to substitutional impurities of Fe 3+ (band at 1.65 eV) [18,19], non-bridging oxygen hole centers (band at 1.9 eV) [9,10,20,21], radiative recombination of the selftrapped exciton with an E' center (band at 2.26 eV) [18] and emission from self-trapped excitons (STE, band at 2.7 eV) [20][21][22][23][24][25][26]. It should be noted that some authors [27] have attributed the latter band to ODC-II (oxygen-deficient centers).…”

“…The two main bands appear at 1.9 eV (red band) and 2.7 eV (blue band). As we said above, most authors attribute the red band to non-bridging oxygen hole centers (NBOHC) [10,20,21], having an unpaired electron in the 2p orbital along the broken Si-O bond. As we discussed before, the specific mechanism for the emission of the blue band is not yet definitely established although it appears to be related to emission from self-trapped excitons [22][23][24][25][26], preferentially located at strained bonds [26].…”

“…It provides information on the electronic structure of the solid, particularly on intra-gap levels associated to impurity and defect centers, such as those introduced by irradiation. In particular, the luminescence induced by ion-beam irradiation, commonly named ionoluminescence (IL), is an appropriate technique to investigate the microscopic processes accompanying the generation of damage, its kinetic evolution with the irradiation fluence, and the formation of color centers [9][10][11][12][13][14]. IL can be considered as an Ion Beam Analysis (IBA) technique that is complementary to Rutherford backscattering spectrometry (RBS), particle-induced X-ray emission (PIXE), and nuclear reaction analysis (NRA) methods.…”

Hydrothermal synthesis and characterization of self-assembled h-WO3 nanowires/nanorods using EDTA salts

“…Among the various transition oxides, tungsten oxide has received wide attention owing to its distinctive photo-and electrochromic properties [3][4][5][6]. It is considered a promising material for a multitude of potential applications including semiconductor gas sensors, electrode materials for secondary batteries, solarenergy devices, photocatalysts, erasable optical storage devices, and field-emission devices [6][7][8][9][10][11]. In particular, the hexagonal form of tungsten trioxide (h-WO 3 ), is of great interest due to its unique tunnel structure, and it has been widely used as an intercalation host to produce tungsten oxide bronzes, by the insertion of electrons and protons or metal ions like Li + , Na + , K + , Zn 2+ , etc.…”

Deuterium retention in tungsten oxide under low energy plasma exposure

“…Thus, deuterium retention in oxide layers and thermal release of deuterium are important for designing nuclear fusion devices. There are a few investigations for H-retention in WO 3 during H irradiation and the film preparation [3,4]. More investigations would be desired for application to fusion devices.…”