scholarly journals Electrochromism in Electropolymerized Films of Pyrene-Triphenylamine Derivatives

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 73 ◽  
Author(s):  
Tian-Ge Sun ◽  
Zhi-Juan Li ◽  
Jiang-Yang Shao ◽  
Yu-Wu Zhong
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Response Time ◽  
Near Infrared ◽  
Contrast Ratio ◽  
Infrared Region ◽  
Cyclic Stability ◽  
Spectral Changes ◽  
Near Infrared Region ◽  
Ratio Response

Two star-shaped multi-triphenylamine derivatives 1 and 2 were prepared, where 2 has an additional phenyl unit between a pyrene core and surrounding triphenylamine units. The oxidative electropolymerization of 1 and 2 occurred smoothly to give thin films of polymers P1 and P2. The electrochemistry and spectroelectrochemistry of P1 and P2 were examined, showing two-step absorption spectral changes in the near-infrared region. The electrochromic properties, including contrast ratio, response time, and cyclic stability of P1 and P2 were investigated and compared. Thin film of P2 displays slightly better electrochromic performance than P1, with a contrast ratio of 45% at 1475 nm being achieved.

Effects of ITO Electrode on Electrochromic Properties of WO3 Thin Films in Visible and Near-Infrared Region

2020 ◽  
Vol MA2020-02 (32) ◽  
pp. 2069-2069
Author(s):  
Yasuhiro Ayauchi ◽  
Yoshio Abe ◽  
Midori Kawamura ◽  
Kyung Ho Kim ◽  
Takayuki Kiba
Keyword(s):  
Thin Films ◽  
Near Infrared ◽  
Infrared Region ◽  
Electrochromic Properties ◽  
Ito Electrode ◽  
Near Infrared Region ◽  
Wo3 Thin Films

Thickness-dependent free-electron relaxation time of Au thin films in near-infrared region

2016 ◽  
Vol 10 (3) ◽  
pp. 033009 ◽  
Author(s):  
Ming-Ying Zhang ◽  
Zi-Yi Wang ◽  
Tian-Ning Zhang ◽  
Yun Zhang ◽  
Rong-Jun Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Relaxation Time ◽  
Free Electron ◽  
Near Infrared ◽  
Infrared Region ◽  
Electron Relaxation ◽  
Electron Relaxation Time ◽  
Near Infrared Region ◽  
Au Thin Films

scholarly journals In and Ga Codoped ZnO Film as a Front Electrode for Thin Film Silicon Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Duy Phong Pham ◽  
Huu Truong Nguyen ◽  
Bach Thang Phan ◽  
Thi My Dung Cao ◽  
Van Dung Hoang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cells ◽  
Near Infrared ◽  
Infrared Region ◽  
Silicon Solar Cells ◽  
Zno Film ◽  
Thin Film Silicon ◽  
Wide Range ◽  
Transparent Conducting Electrodes

Doped ZnO thin films have attracted much attention in the research community as front-contact transparent conducting electrodes in thin film silicon solar cells. The prerequisite in both low resistivity and high transmittance in visible and near-infrared region for hydrogenated microcrystalline or amorphous/microcrystalline tandem thin film silicon solar cells has promoted further improvements of this material. In this work, we propose the combination of major Ga and minor In impurities codoped in ZnO film (IGZO) to improve the film optoelectronic properties. A wide range of Ga and In contents in sputtering targets was explored to find optimum optical and electrical properties of deposited films. The results show that an appropriate combination of In and Ga atoms in ZnO material, followed by in-air thermal annealing process, can enhance the crystallization, conductivity, and transmittance of IGZO thin films, which can be well used as front-contact electrodes in thin film silicon solar cells.

scholarly journals OPTICAL ABSORPTION OF Ag-BaO THIN FILM IN THE VISIBLE AND NEAR-INFRARED REGION WITH APPLIED ELECTRIC FIELD

2001 ◽  
Vol 50 (3) ◽  
pp. 561
Author(s):  
ZHANG QI-FENG ◽  
HOU SHI-MIN ◽  
ZHANG GENG-MIN ◽  
LIU WEI-MIN ◽  
XUE ZENG-QUAN ◽  
...  
Keyword(s):  
Thin Film ◽  
Optical Absorption ◽  
Electric Field ◽  
Applied Electric Field ◽  
Near Infrared ◽  
Infrared Region ◽  
Near Infrared Region

Nanocrystalline Sb-doped SnO2 films modified with cyclometalated ruthenium complexes for two-step electrochromism

2019 ◽  
Vol 48 (6) ◽  
pp. 2197-2205 ◽  
Author(s):  
Zhi-Juan Li ◽  
Jiang-Yang Shao ◽  
Si-Hai Wu ◽  
Yu-Wu Zhong
Keyword(s):  
Near Infrared ◽  
Contrast Ratio ◽  
Ruthenium Complexes ◽  
Infrared Region ◽  
Rapid Response ◽  
Redox Active ◽  
Near Infrared Region ◽  
Good Contrast

Sb-Doped SnO2 films modified with redox-active cyclometalated ruthenium complexes show two-step electrochromism in the near infrared region with a rapid response and good contrast ratio.

Ligand Influence Versus Electronic Configuration of d-metal Ion in Determining the Fate of NIR Emission from LnIII Ions: A Case Study with CuII, NiII and ZnII Complexes.

2021 ◽  
Author(s):  
Abhineet Verma ◽  
Sk Saddam Hossain ◽  
Sailaja S Sunkari ◽  
Joseph Reibenspies ◽  
Satyen Saha
Keyword(s):  
Metal Ion ◽  
Selection Rule ◽  
Near Infrared ◽  
Electronic Configuration ◽  
Infrared Region ◽  
Direct Excitation ◽  
Characteristic Emission ◽  
Nir Emission ◽  
Near Infrared Region

Lanthanides (LnIII) are well known for their characteristic emission in the Near-Infrared Region (NIR). However, direct excitation of lanthanides is not feasible as described by Laporte’s parity selection rule. Here,...

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