Optical Properties of a ZnO/P Nanostructure Fabricated by a Chemical Vapor Deposition Method

Abstract

A diamond-shaped P-doped ZnO nanostructure was fabricated on a Si (100) substrate by a chemical vapor deposition method. The photoluminescence properties of the ZnO nanostructure were studied with a temperature range from 81 to 306 K. At 81 K, a series of transitions of donor−acceptor pairs and their phonon replicas were observed in the PL spectrum. These results revealed that shallow-donor and deep-acceptor impurity bands existed in the P-doped ZnO nanostructure. From 81 to 111 K, the abnormal UV emission intensity was observed. The multiphonon scattering spectra were attributed to the interaction of electrons and phonons.

Role of Mn2+ Doping on Structural, Morphological, and Opto-Magnetic Properties of Spinel Mn x Co1−x Fe2O4 (x = 0.0, 0.1, 0.2, 0.3, 0.4, and 0.5) Nanocatalysts

“…When the solution reached the point of spontaneous combustion, it vaporized and instantly became a solid. After the completion of combustion reaction, the solid powder was obtained and then it was washed well with ethanol and dried at 80 • C for 30 The expected urea-assisted autocombustion reaction may be as follows:…”

“…Also, PL spectroscopy gives information on the bandgap with the relative energetic position of sub-bandgap defect states and nanometer size effect of the particles may reflect its optical property. Figure 10 shows the room temperature PL spectra of the [30,31]. The main peak at 530 nm may be attributed to the oxygen vacancies giving rise to green emissions [32].…”

Synthesis and comparative studies of MnFe2O4 nanoparticles with different natural polymers by sol–gel method: structural, morphological, optical, magnetic, catalytic and biological activities

“…A visible region peak observed at 412 and 413 nm is also attributed to the oxygen vacancies. Two peaks appeared around 412 and 413 nm corresponds to blue emission due to the radioactive defects related to the interface traps existing at the grain boundaries [36]. PL emission spectrum of MnFe 2 O 4 samples shows maximum level at 412 nm (blue emission) which indicates the recombination of electrons deeply trapped in oxygen vacancies with photo generated holes [37].…”

Green and chemical-engineered CuFe2O4: characterization, cyclic voltammetry, photocatalytic and photoluminescent investigation for multifunctional applications

“…The PL intensity of the samples excited at 313 nm is stronger than that under 323 nm indicating that an efficient energy transfer. The peak at 421 nm indicates the radiative defect related to the interface traps that exist at the grain boundary corresponds to the blue emission [35,36]. The peak at 532 nm corresponds to green emission due to the singly ionized oxygen vacancy and deep level or trap state emission.…”