Twinning effect on photoluminescence spectra of ZnSe nanowires

2014 ◽  
Vol 116 (17) ◽  
pp. 174303 ◽  
Author(s):  
Jing Xu ◽  
Chunrui Wang ◽  
Binhe Wu ◽  
Xiaofeng Xu ◽  
Xiaoshuang Chen ◽  
...  
Keyword(s):  
Photoluminescence Spectra ◽  
Znse Nanowires

Origin of the red luminescence band in photoluminescence spectra of ZnSe nanowires

2007 ◽  
Vol 90 (6) ◽  
pp. 063103 ◽  
Author(s):  
U. Philipose ◽  
S. Yang ◽  
T. Xu ◽  
Harry E. Ruda
Keyword(s):  
Luminescence Band ◽  
Photoluminescence Spectra ◽  
Znse Nanowires ◽  
Red Luminescence

scholarly journals Substrate-Dependent Differences in the Crystal Structures and Optical Properties of ZnSe Nanowires

2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Keumyoung Seo ◽  
Jihye Bong ◽  
Jae-Woo Kim ◽  
Yoon-Ho Song ◽  
Yong Ho Shin ◽  
...  
Keyword(s):  
Optical Properties ◽  
Structural Properties ◽  
Field Emission ◽  
Hexagonal Structure ◽  
Emission Peak ◽  
Photoluminescence Spectra ◽  
Red Emission ◽  
Light Emitting ◽  
Znse Nanowires ◽  
Emission Light

The optical and structural properties of ZnSe nanowires directly grown on three different substrates, SiO2, ITO, and graphene, were investigated. ZnSe nanowires grown on graphene and SiO2were found to have cubic structures, while ZnSe nanowires grown on ITO had a mixed cubic and hexagonal structure. The main peaks in the photoluminescence spectra of ZnSe nanowires grown on SiO2, ITO, and graphene were located at 459, 627, and 627/460 nm, respectively. In addition, a field-emission light-emitting device was fabricated using ZnSe nanowires as a phosphor and graphene as an electrode. The device showed a red emission peak with Commission Internationale de L’Eclairage coordinates of (0.621, 0.315).

Growth of ZnSe Nanowires and their Photoluminescence Spectra

2018 ◽  
Vol 790 ◽  
pp. 55-59 ◽  
Author(s):  
Shunji Ozaki ◽  
Kazuya Matsumoto
Keyword(s):  
Zinc Selenide ◽  
Vapor Transport ◽  
Near Band Edge ◽  
Photoluminescence Spectra ◽  
Fused Quartz ◽  
Colored Product ◽  
Znse Nanowires ◽  
Quartz Substrates ◽  
Transport Method ◽  
Vapor Transport Method

Zinc selenide (ZnSe) nanowires were grown on Si and fused quartz substrates by a simple vapor transport method of heating the ZnSe powder at 1100 °C in a tube of the furnace. The obtained yellow colored product has indicated to be the high density of ZnSe nanowires with diameters ranging from 50 to 200 nm. Low-temperature photoluminescence spectra for ZnSe nanowires show near band-edge emissions. The free excitonic emissions were observed at ~2.8 eV.

scholarly journals Structural and Enhanced Optical Properties of Stabilized γ‒Bi2O3 Nanoparticles: Effect of Oxygen Ion Vacancies

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1023 ◽  
Author(s):  
Ashish Chhaganlal Gandhi ◽  
Chia-Liang Cheng ◽  
Sheng Yun Wu
Keyword(s):  
Room Temperature ◽  
Excess Oxygen ◽  
Ambient Atmosphere ◽  
Photoluminescence Spectra ◽  
X Ray Diffraction ◽  
X Ray ◽  
Band Emission ◽  
Oxygen Ion ◽  
Integrated Intensity ◽  
Effect Of Oxygen

We report the synthesis of room temperature (RT) stabilized γ–Bi2O3 nanoparticles (NPs) at the expense of metallic Bi NPs through annealing in an ambient atmosphere. RT stability of the metastable γ–Bi2O3 NPs is confirmed using synchrotron radiation powder X-ray diffraction and Raman spectroscopy. γ–Bi2O3 NPs exhibited a strong red-band emission peaking at ~701 nm, covering 81% integrated intensity of photoluminescence spectra. Our findings suggest that the RT stabilization and enhanced red-band emission of γ‒Bi2O3 is mediated by excess oxygen ion vacancies generated at the octahedral O(2) sites during the annealing process.

Photoluminescence spectra of oxygen-doped ZnSe grown by molecular-beam epitaxy

1989 ◽  
Vol 39 (5) ◽  
pp. 3138-3144 ◽  
Author(s):  
Katsuhiro Akimoto ◽  
Takao Miyajima ◽  
Yoshifumi Mori
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Photoluminescence Spectra

Inhomogeneous Broadening of Photoluminescence Spectra and Kinetics of Nanometer-Thick (Phenethylammonium)2PbI4 Perovskite Thin Films: Implications for Optoelectronics

2021 ◽  
Author(s):  
Vladimir S. Chirvony ◽  
Isaac Suárez ◽  
Jesús Rodríguez-Romero ◽  
Rubén Vázquez-Cárdenas ◽  
Jesus Sanchez-Diaz ◽  
...  
Keyword(s):  
Thin Films ◽  
Inhomogeneous Broadening ◽  
Photoluminescence Spectra ◽  
Kinetics Of

scholarly journals Exciton-Related Raman Scattering, Interband Absorption and Photoluminescence in Colloidal Cdse/Cds Core/Shell Quantum Dots Ensemble

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1274
Author(s):  
Grigor A. Mantashian ◽  
Paytsar A. Mantashyan ◽  
Hayk A. Sarkisyan ◽  
Eduard M. Kazaryan ◽  
Gabriel Bester ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Raman Scattering ◽  
Cross Section ◽  
Core Shell ◽  
Interband Absorption ◽  
Photoluminescence Spectra ◽  
Cds Quantum Dots ◽  
Mass Approximation ◽  
Numerical Discretization ◽  
Size Dispersion

By using the numerical discretization method within the effective-mass approximation, we have theoretically investigated the exciton-related Raman scattering, interband absorption and photoluminescence in colloidal CdSe/CdS core/shell quantum dots ensemble. The interband optical absorption and photoluminescence spectra have been revealed for CdSe/CdS quantum dots, taking into account the size dispersion of the ensemble. Numerical calculation of the differential cross section has been presented for the exciton-related Stokes–Raman scattering in CdSe/CdS quantum dots ensemble with different mean sizes.

Luminescent Properties of Zn2SiO4:Eu3+,Dy3+ Phosphors via Sol-Gel Process

2012 ◽  
Vol 217-219 ◽  
pp. 733-736
Author(s):  
Xiu Mei Han ◽  
Shu Ai Hao ◽  
Ying Ling Wang ◽  
Gui Fang Sun ◽  
Xi Wei Qi
Keyword(s):  
Thermal Analysis ◽  
Ir Spectra ◽  
Sol Gel ◽  
Luminescent Properties ◽  
Photoluminescence Spectra ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sol Gel Process ◽  
Ft Ir

Zn2SiO4:Eu3+, Dy3+ phosphors have been prepared through the sol-gel process. X-ray diffraction (XRD), thermogravimetric and ddifferential thermal analysis (TG-DTA), FT-IR spectra and photoluminescence spectra were used to characterize the resulting phosphors. The results of XRD indicated that the phosphors crystallized completely at 1000oC. In Zn2SiO4:Eu3+,Dy3+ phosphors, the Eu3+ and Dy3+ show their characteristic red(613nm, 5D0-7F2), blue (481nm, 4F9/2–6H15/2) and yellow (577nm, 4F9/2–6H13/2) emissions.

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