(INVITED) Ultraviolet and visible luminescence from bismuth doped materials

Synthesis and luminescence of uniform europium- doped bismuth fluoride and bismuth oxyfluoride particles with different morphologies†

Synthesis and Characterization of Ga-Doped Bismuth Based Superconducting Materials

A series of bismuth based superconducting materials doped with galliumBi Pb Sr Ca Cu Ga O 1.7 0.4 2 2 3-x x y (x = 0.0, 0.02, 0.04, 0.06, 0.08 and 0.10) was synthesized by Simple solid-state reaction method. The samples were characterized by X-ray diffraction, EDX analysis and electrical resistivity and ac magnetic susceptibility measurements. All the samples consist of both low-T (2212) and Hi...

Time-resolved investigation of bright visible wavelength luminescence from sulfur-doped ZnO nanowires and micropowders.

Sulfur-doped zinc oxide (ZnO) nanowires grown on gold-coated silicon substrates inside a horizontal tube furnace exhibit remarkably strong visible wavelength emission with a quantum efficiency of 30%, an integrated intensity 1600 times stronger than band edge ultraviolet emission, and a spectral distribution that closely matches the dark-adapted human eye response. By comparatively studying sul...

Spectroscopic studies of the visible and infrared luminescence from Er doped GaN

The visible and infrared luminescence of erbium doped gallium nitride prepared by metal-organic molecular beam epitaxy (MOMBE) and solid-source molecular beam epitaxy (SSMBE) were investigated as a function of excitation wavelength and temperature. Both samples exhibited 1.54 mm Er photoluminescence (PL), but only GaN:Er (SSMBE) showed visible PL lines at 537 and 558 nm. Excitation wavelength d...

Room-temperature violet luminescence and ultraviolet photodetection of Sb-doped ZnO/Al-doped ZnO homojunction array

A Sb-doped ZnO microrod array was fabricated on an Al-doped ZnO thin film by electrodeposition. Strong violet luminescence, originated from free electron-to-acceptor level transitions, was identified by temperature-dependent photoluminescence measurements. This acceptor-related transition was attributed to substitution of Sb dopants for Zn sites, instead of O sites, to form a complex with two Z...