Abstract
Novel nanophotonic crystals from In1-xIrxP were synthesized via 1,2,3-tritetradecanoylglycerol assisted solvothermal approach for light emitting devices application. The incorporation of the Ir-ions dopant in the In1-xIrxP photonics nanocrystal triggered an increase of lattice constant and crystallites sizes of these nanocrystals. The TEM scrutinized the monodispersing of the formed nanoparticle and revealed that the Ir-dopant caused an increase of the formed nanoparticle diameters from 1.7 nm to 7.2 nm. The lattice space parameter showed an increase from 0.291 nm to 0.305 nm with the Ir-dopant increase. The optical absorption spectroscopy revealed that a modulating for the bandgap takes place upon the increasing of Ir-dopant. The optical bangaps reduced from 2.14 eV to 1.65 eV. The luminescence spectroscopic analyses inspected that the insertion of Ir-dopant in the In cites of the developed nanophotonic crystals resulted in the emission of multiple colors with high intensity. The luminescent intensity of the light photons emitted from the In1-xIrxP nanophotonic crystals is enlarged by 13 times. Reduction of the Stokes shift and FWHM of the emitted light was observed, implying that the Ir-dopant suppresses the surface and crystal defects. A notable enhancement of the quantum yield of 88 % was obtained. This enhancement arises from the population of electrons in the Ir-dopant levels that are located within the bandgap of the InP nanophotonic crystal. The achieved outstanding characterstics may enable the as-synthesis new nanophotonic crystals for the application of multicolored light emitting device.