Phase transition analysis of thermochromic VO2 thin films by temperature-dependent Raman scattering and ellipsometry

2018 ◽  
Vol 456 ◽  
pp. 545-551 ◽  
Author(s):  
Ying Huang ◽  
Dongping Zhang ◽  
Yi Liu ◽  
Jingcheng Jin ◽  
Yu Yang ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Raman Scattering ◽  
Temperature Dependent ◽  
Transition Analysis ◽  
Vo2 Thin Films

Study of the phase transition properties and electronic band structures of VO2 thin films grown on different substrates

2018 ◽  
Vol 6 (2) ◽  
pp. 026409
Author(s):  
Yunfeng Guo ◽  
Yuzhi Zhang ◽  
Liangmiao Zhang ◽  
Xinrui Lv ◽  
Lingnan Wu ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Band Structures ◽  
Electronic Band ◽  
Vo2 Thin Films ◽  
Electronic Band Structures

Synthesis and phase transition of Cu2+ ion doped VO2 thin films

1996 ◽  
Vol 15 (10) ◽  
pp. 856-857 ◽  
Author(s):  
Songwei Lu ◽  
Lisong Hou ◽  
Fuxi Gan
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Vo2 Thin Films

The Effect of Organic Cation Dynamics on the Optical Properties in (PEA)2(MA)[Pb2I7] Perovskite Dimorphs

2021 ◽  
Author(s):  
Lekina Yulia ◽  
Sai Dintakurti ◽  
Benny Febriansyah ◽  
David George Bradley ◽  
Jiaxu Yan ◽  
...  
Keyword(s):  
Phase Transition ◽  
Optical Properties ◽  
Raman Scattering ◽  
Organic Cation ◽  
Two Dimensional ◽  
Lead Iodide ◽  
Temperature Dependent ◽  
Hybrid Perovskite

Two-dimensional (2D) phenylethyl ammonium (PEA+)-methyl ammonium (MA+) lead iodide ((PEA)2(MA)[Pb2I7]) hybrid perovskite exists as temperature-dependent dimorphs exhibiting an ill-defined phase transition occurring over 150 - 200 K range. Raman scattering,...

scholarly journals Role of microstructures on the M1-M2 phase transition in epitaxial VO2 thin films

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Yanda Ji ◽  
Yin Zhang ◽  
Min Gao ◽  
Zhen Yuan ◽  
Yudong Xia ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Vo2 Thin Films

Thermochromic VO2 Thin Film Prepared by Post Annealing Treatment of V2O5 Thin Film

2009 ◽  
Vol 79-82 ◽  
pp. 747-750 ◽  
Author(s):  
Dong Qing Liu ◽  
Wen Wei Zheng ◽  
Hai Feng Cheng ◽  
Hai Tao Liu
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Phase Transition ◽  
Photoelectron Spectroscopy ◽  
Sol Gel ◽  
Annealing Treatment ◽  
Simple Method ◽  
X Ray ◽  
Post Annealing ◽  
Vo2 Thin Films

Thermochromic vanadium dioxide (VO2) exhibits a semi-conducting to metallic phase transition at about 68°C, involving strong variations in electrical and optical properties. A simple method was proposed to prepare VO2 thin films from easily gained V2O5 thin films. The detailed thermodynamic calculation was done and the results show that V2O5 will decompose to VO2 when the post annealing temperature reaches 550°C at the atmospheric pressure of less than 0.06Pa. The initial V2O5 films were prepared by sol-gel method on fused-quartz substrates. Different post annealing conditions were studied. The derived VO2 thin film samples were characterized using X-ray diffraction and X-ray photoelectron spectroscopy. The electrical resistance and infrared emissivity of VO2 thin films under different temperatures were measured. The results show that the VO2 thin film derived from the V2O5 thin film annealed at 550°C for 10 hours is pure dioxide of vanadium without other valences. It was observed that the resistance of VO2 thin film with thickness about 600nm can change by 4 orders of magnitude and the 7.5-14μm emissivity can change by 0.6 during the phase transition.

Anomalous Temperature-Dependent Raman Scattering of Vapor-Deposited Two-Dimensional Bi Thin Films

2018 ◽  
Vol 122 (42) ◽  
pp. 24459-24466 ◽  
Author(s):  
Donglin Lu ◽  
Siwei Luo ◽  
Shuhua Liu ◽  
Hao Yao ◽  
Xiaohui Ren ◽  
...  
Keyword(s):  
Thin Films ◽  
Raman Scattering ◽  
Two Dimensional ◽  
Temperature Dependent ◽  
Anomalous Temperature

Vis-IR Optical Switching/ Modulation Based on the Electrically- Activated Phase Transition of VO2 Thin Films

2010 ◽  
Author(s):  
Aurelian Crunteanu ◽  
Marc Fabert ◽  
Julien Givernaud ◽  
Vincent Kermène ◽  
Agnès Desfarges-Berthelemot ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Optical Switching ◽  
Vo2 Thin Films
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