scholarly journals A Mini-Review: Pyridyl-Based Coordination Polymers for Energy Efficient Electrochromic Application

2021 ◽  
Vol 9 ◽  
Author(s):  
Shiyou Liu ◽  
Ping Zhang ◽  
Jianjian Fu ◽  
Congyuan Wei ◽  
Guofa Cai
Keyword(s):  
Energy Efficient ◽  
High Performance ◽  
Active Material ◽  
Cycling Stability ◽  
Electrochromic Devices ◽  
Switching Speed ◽  
Smart Windows ◽  
Coloration Efficiency ◽  
Fast Switching ◽  
Application Prospects

Electrochromic devices (ECDs) have a broad range of application prospects in many important energy efficient optoelectronic fields, such as smart windows, anti-glare rearview mirrors, low-energy displays, and infrared camouflage. However, there are some factors restricting their development, such as low coloration efficiency, slow switching speed, and poor cycling stability. Coordination polymer (CP) is a promising active material for the fabrication of high-performance ECD because of its ultrahigh coloration efficiency, fast switching speed, and excellent cycling stability. In this review, current advances of CP in energy efficient ECDs are comprehensively summarized and evaluated. Specifically, the effects of composition, coordination bonding, and microstructure of the bipyridine- and terpyridine-based CP on EC performances are introduced and discussed in detail. Then, the challenges and prospects of this booming field are proposed. Finally, the broad application prospects of the CPs-based EC materials and the corresponding devices are also demonstrated, which hold numerous revolutionary effects over our daily life. Hopefully, this review would provide useful guidance and further promote progress on the electrochromic and other optoelectronic fields.

scholarly journals Flexible and High-Performance Electrochromic Devices Enabled by Self-Assembled 2D TiO2/MXene Heterostructures

2020 ◽  
Author(s):  
Ran Li ◽  
Xiaoyuan Ma ◽  
Jianmin Li ◽  
Jun Cao ◽  
Hongze Gao ◽  
...  
Keyword(s):  
Transition Metal Oxides ◽  
High Performance ◽  
Transparent Electrode ◽  
Fast Response ◽  
Electrochromic Devices ◽  
Large Area ◽  
Smart Windows ◽  
Coloration Efficiency ◽  
Flexible Devices ◽  
Self Assembled

Abstract Transition metal oxides (TMO) are promising electrochromic (EC) materials for applications such as smart windows and displays, yet challenge still exists to achieve good flexibility, high coloration efficiency and fast response simultaneously. MXenes (e.g. Ti3C2Tx) and their derived TMOs (e.g. 2D TiO2) are good candidates for high-performance and flexible EC devices because of their 2D nature and the possibility of assembling them into loosely networked structures. Here we demonstrate flexible, fast, and high-coloration-efficiency EC devices based on self-assembled 2D TiO2/Ti3C2Tx heterostructures, with the Ti3C2Tx layer as the transparent electrode, and the 2D TiO2 layer as the EC layer. Benefiting from the well-balanced porosity and connectivity of these assembled nanometer-thick heterostructures, they present fast and efficient ion and electron transport, as well as superior mechanical and electrochemical stability. We further demonstrate large-area flexible devices which could potentially be integrated onto curved and flexible surfaces for future ubiquitous electronics.

scholarly journals Flexible and high-performance electrochromic devices enabled by self-assembled 2D TiO2/MXene heterostructures

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ran Li ◽  
Xiaoyuan Ma ◽  
Jianmin Li ◽  
Jun Cao ◽  
Hongze Gao ◽  
...  
Keyword(s):  
Transition Metal Oxides ◽  
High Performance ◽  
Transparent Electrode ◽  
Fast Response ◽  
Electrochromic Devices ◽  
Large Area ◽  
Smart Windows ◽  
Coloration Efficiency ◽  
Flexible Devices ◽  
Self Assembled

AbstractTransition metal oxides (TMOs) are promising electrochromic (EC) materials for applications such as smart windows and displays, yet the challenge still exists to achieve good flexibility, high coloration efficiency and fast response simultaneously. MXenes (e.g. Ti3C2Tx) and their derived TMOs (e.g. 2D TiO2) are good candidates for high-performance and flexible EC devices because of their 2D nature and the possibility of assembling them into loosely networked structures. Here we demonstrate flexible, fast, and high-coloration-efficiency EC devices based on self-assembled 2D TiO2/Ti3C2Tx heterostructures, with the Ti3C2Tx layer as the transparent electrode, and the 2D TiO2 layer as the EC layer. Benefiting from the well-balanced porosity and connectivity of these assembled nanometer-thick heterostructures, they present fast and efficient ion and electron transport, as well as superior mechanical and electrochemical stability. We further demonstrate large-area flexible devices which could potentially be integrated onto curved and flexible surfaces for future ubiquitous electronics.

Versatile displays based on a 3-dimensionally ordered macroporous vanadium oxide film for advanced electrochromic devices

2015 ◽  
Vol 3 (13) ◽  
pp. 3159-3166 ◽  
Author(s):  
Zhongqiu Tong ◽  
Haowei Yang ◽  
Li Na ◽  
Huiying Qu ◽  
Xiang Zhang ◽  
...  
Keyword(s):  
Oxide Film ◽  
Vanadium Oxide ◽  
Cycling Stability ◽  
Electrochromic Device ◽  
Electrochromic Devices ◽  
Switching Speed ◽  
Fast Switching ◽  
Ordered Macroporous ◽  
Good Cycling Stability ◽  
Fast Switching Speed

An electrochromic device based on a 3DOM vanadium oxide film and a PEDOT:PSS film was fabricated, and this device shows multicolor changes with fast switching speed and good cycling stability.

Chromogenics for Sustainable Energy: Some Advances in Thermochromics and Electrochromics

2010 ◽  
Vol 75 ◽  
pp. 55-64 ◽  
Author(s):  
Claes Goran Granqvist ◽  
Sara V. Green ◽  
Shu Yi Li ◽  
N.R. Mlyuka ◽  
Gunnar A. Niklasson ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Recent Progress ◽  
Large Temperature ◽  
Electrochromic Devices ◽  
Temperature Dependent ◽  
Roll Coating ◽  
Coloration Efficiency ◽  
Roll To Roll ◽  
External Stimuli ◽  
Initial Results

Chromogenic materials are able to change their optical properties in response to external stimuli such as temperature (in thermochromic materials) and electrical charge insertion (in electrochromic materials). Below we review some recent advances for these types of materials. Specifically we first discuss the limitations of thermochromic VO2 films for energy efficient fenestration and show from calculations that nanocomposites containing VO2 can have superior properties and display high luminous transmittance and large temperature-dependent solar transmittance modulation. Even better results may be found for nanoparticles of VO2:Mg. In the second part of the paper we survey some recent progress for electrochromic devices and show that W oxide films have increased coloration efficiency when some Ni oxide is added. We also present initial results for flexible electrochromic foils produced by roll-to-roll coating and continuous lamination.

Improved electrochromic performance of a radio frequency magnetron sputtered NiO thin film with high optical switching speed

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 79668-79680 ◽  
Author(s):  
K. S. Usha ◽  
R. Sivakumar ◽  
C. Sanjeeviraja ◽  
Vasant Sathe ◽  
V. Ganesan ◽  
...  
Keyword(s):  
Thin Film ◽  
Radio Frequency ◽  
Optical Switching ◽  
Switching Time ◽  
Rf Magnetron Sputtering ◽  
Optical Modulation ◽  
Switching Speed ◽  
Coloration Efficiency ◽  
Fast Switching ◽  
Nio Thin Film

A nickel oxide (NiO) thin film with better reversibility, high optical modulation, and enhanced coloration efficiency with fast switching time was prepared using radio frequency (rf) magnetron sputtering technique.

scholarly journals Luminescent Electrochromic Devices for Smart Windows of Energy-Efficient Buildings

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3513 ◽  
Author(s):  
Mariana Fernandes ◽  
Vânia Freitas ◽  
Sónia Pereira ◽  
Rita Leones ◽  
Maria Silva ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Near Infrared ◽  
Sol Gel ◽  
Average Molecular Weight ◽  
The Novel ◽  
Electrochromic Devices ◽  
Lithium Triflate ◽  
Smart Windows ◽  
Energy Efficient Buildings ◽  
Nir Emission

To address the challenges of the next generation of smart windows for energy-efficient buildings, new electrochromic devices (ECDs) are introduced. These include indium molybdenum oxide (IMO), a conducting oxide transparent in the near-infrared (NIR) region, and a NIR-emitting electrolyte. The novel electrolytes are based on a sol-gel-derived di-urethane cross-linked siloxane-based host structure, including short chains of poly (ε-caprolactone) (PCL(530) (where 530 represents the average molecular weight in g mol−1). This hybrid framework was doped with a combination of either, lithium triflate (LiTrif) and erbium triflate (ErTrif3), or LiTrif and bisaquatris (thenoyltrifluoroacetonate) erbium (III) ([Er(tta)3(H2O)2]). The ECD@LiTrif-[Er(tta)3(H2O)2] device presents a typical Er3+ NIR emission around 1550 nm. The figures of merit of these devices are high cycling stability, good reversibility, and unusually high coloration efficiency (CE = ΔOD/ΔQ, where Q is the inserted/de-inserted charge density). CE values of −8824/+6569 cm2 C−1 and −8243/+5200 cm2 C−1 were achieved at 555 nm on the 400th cycle, for ECD@LiTrif-ErTrif3 and ECD@LiTrif-[Er(tta)3(H2O)2], respectively.

High performance electrochromic devices based on a polyindole derivative, poly(1H-benzo[g]indole)

2015 ◽  
Vol 3 (43) ◽  
pp. 11318-11325 ◽  
Author(s):  
Guangming Nie ◽  
Ling Wang ◽  
Changlong Liu
Keyword(s):  
Response Time ◽  
High Performance ◽  
Optical Memory ◽  
Fast Response ◽  
Electrochromic Devices ◽  
Optical Contrast ◽  
Fast Response Time ◽  
Coloration Efficiency ◽  
Long Term Stability

An ECD based on electrochromic poly(1H-benzo[g]indole) was fabricated. The color of this ECD can switch between green and navy blue with good optical contrast, high coloration efficiency, fast response time, better optical memory and long-term stability.

Sign in / Sign up

Export Citation Format

Share Document