Journal ArticleDOI
Raman scattering study of zinc blende and wurtzite ZnS
Reads0
Chats0
TLDR
In this article, the first and second-order Raman scattering of zinc blende and wurtzite ZnS was studied and the origins of these vibration modes in the second order Raman spectra from these two polymorphs were identified for the first time.Abstract:
We have conducted an experimental and theoretical study on first- and second-order Raman scattering of zinc blende and wurtzite ZnS. Based on the calculated phonon band structure, phonon density of states, and symmetry selection rules, we have clearly identified for the first time the origins of these vibration modes in the second-order Raman spectra from these two polymorphs. For zinc blende ZnS, it is found that the previously estimated frequency of the LA mode at X point in the Brillouin-zone boundary is much smaller than the value obtained from other experiments and our calculation. Considering the involvement of LA phonon at X point, we reassign the second-order Raman active modes and some other modes which have not yet been understood so far. This work clarifies some of the controversial Raman mode assignments in zinc blende and wurtzite ZnS.read more
Citations
More filters
Journal ArticleDOI
Microwave assisted synthesis of Cu2ZnSnS4colloidal nanoparticle inks
TL;DR: In this paper, a solar cell fabricated with CZnSnS4 nanoparticles had a conversion efficiency of 0.25% using a one-pot synthesis method using microwave heating.
Journal ArticleDOI
Phase-Selective Synthesis of Cu2ZnSnS4 Nanocrystals using Different Sulfur Precursors
TL;DR: Time dependent studies were conducted and the reaction rate of sulfur source was found to be the key factor in determining the phase formation and the optical and electrical properties of kesterite and wurtzite CZTS were evaluated.
Journal ArticleDOI
Preparation of Cu2ZnSnS4 single crystals from Sn solutions
TL;DR: In this article, the phase diagrams of the Cu 2 ZnSnS 4 pseudobinary system were investigated to obtain knowledge useful for the growth of high-quality CZTS single crystals using a solution-based method.
Journal ArticleDOI
The Evolution from a Typical Type-I CdS/ZnS to Type-II and Z-Scheme Hybrid Structure for Efficient and Stable Hydrogen Production under Visible Light
Yuan Lin,Yuan Lin,Qiao Zhang,Yuhang Li,Yunpeng Liu,Kejia Xu,Jiangnan Huang,Xiaosong Zhou,Feng Peng +8 more
TL;DR: In this article, an incompletely covered CdS/ZnS core/shell is synthesized via a simple hydrothermal method, where the defect energy levels introduced by zinc vacancies are taken into account.
Journal ArticleDOI
Defect engineering of zeolite imidazole framework derived ZnS nanosheets towards enhanced visible light driven photocatalytic hydrogen production
Jun Zhou,Jing Zhao,Rui Liu +2 more
TL;DR: In this article, the authors employed zeolite imidazole framework-8 (ZIF-8) as a sacrificing template for defect engineering of zinc sulfide photocatalysts to overcome their limited light response and stability.
References
More filters
Journal ArticleDOI
Phonons and related crystal properties from density-functional perturbation theory
TL;DR: In this paper, the current status of lattice-dynamical calculations in crystals, using density-functional perturbation theory, with emphasis on the plane-wave pseudopotential method, is reviewed.
Journal ArticleDOI
Temperature dependence of Raman scattering in ZnO
Ramón Cuscó,Esther Alarcon-Llado,Jordi Ibáñez,Luis Artús,Juan Jiménez,Buguo Wang,Michael J. Callahan +6 more
TL;DR: In this paper, a Raman scattering study of wurtzite was carried out over a temperature range from 80 to 750°C, where the second-order Raman features were interpreted in the light of recent ab initio phonon density of states calculations.
Journal ArticleDOI
Resonant Raman scattering in cubic and hexagonal boron nitride
TL;DR: In this article, first and second-order Raman scattering in cubic and hexagonal boron nitride using excitation energies in the visible and in the UV was measured.
Journal ArticleDOI
First-principles calculation of vibrational Raman spectra in large systems: signature of small rings in crystalline SiO2.
Michele Lazzeri,Francesco Mauri +1 more
TL;DR: The signature of 3- and 4-membered rings in the Raman spectra of several polymorphs of SiO2, including a zeolite having 102 atoms per unit cell is studied.
Journal ArticleDOI
Zone-boundary phonons in hexagonal and cubic GaN
H. Siegle,G. Kaczmarczyk,L. Filippidis,Alexander P. Litvinchuk,Axel Hoffmann,Christian Thomsen +5 more
TL;DR: In this paper, the second-order Raman-scattering experiments on hexagonal and cubic GaN covering the acoustic and the optical overtone spectral region were presented, and the observed structures were assigned to particular phonon branches and determined the points in the Brillouin zone from which the scattering originates.