Electrospinning as a Versatile Method of Composite Thin Films Fabrication for Selected Applications

2019 ◽  
Vol 293 ◽  
pp. 35-49 ◽  
Author(s):  
Wiktor Matysiak ◽  
Tomasz Tański ◽  
Weronika Smok
Keyword(s):  
Thin Films ◽  
Phase Separation ◽  
Physicochemical Properties ◽  
Template Synthesis ◽  
Self Assembly ◽  
Textile Industry ◽  
Separation Method ◽  
Common Method ◽  
High Quality ◽  
Composite Thin Films

Today, one of the most popular nanomaterials are thin nanofibrous layers, which are used in many fields of industry, eg electronics, optics, filtration and the textile industry. They can be produced by various methods, such as drawing, template synthesis, molecular self-assembly or phase separation method, but the most common method is electrospinning from a solution or melts. Electrospinning is gaining more and more interest due to its versatility, simplicity and economy as well as the possibility of producing fibers from various types of polymeric, ceramic and metalic materials. Nanofibrous layers produced by this method are characterized by high quality and the desired physicochemical properties.

scholarly journals Perovskite-molecule composite thin films for efficient and stable light-emitting diodes

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Heyong Wang ◽  
Felix Utama Kosasih ◽  
Hongling Yu ◽  
Guanhaojie Zheng ◽  
Jiangbin Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Degradation Mechanism ◽  
Deep Understanding ◽  
Significant Progress ◽  
High Quality ◽  
Composite Thin Films ◽  
Light Emitting

AbstractAlthough perovskite light-emitting diodes (PeLEDs) have recently experienced significant progress, there are only scattered reports of PeLEDs with both high efficiency and long operational stability, calling for additional strategies to address this challenge. Here, we develop perovskite-molecule composite thin films for efficient and stable PeLEDs. The perovskite-molecule composite thin films consist of in-situ formed high-quality perovskite nanocrystals embedded in the electron-transport molecular matrix, which controls nucleation process of perovskites, leading to PeLEDs with a peak external quantum efficiency of 17.3% and half-lifetime of approximately 100 h. In addition, we find that the device degradation mechanism at high driving voltages is different from that at low driving voltages. This work provides an effective strategy and deep understanding for achieving efficient and stable PeLEDs from both material and device perspectives.

Influence of gold species (AuCl4−and AuCl2−) on self-assembly of PS-b-P2VP in solutions and morphology of composite thin films fabricated at the air/liquid interfaces

2016 ◽  
Vol 18 (3) ◽  
pp. 1945-1952 ◽  
Author(s):  
Xingjuan Zhao ◽  
Qian Wang ◽  
Xiaokai Zhang ◽  
Yong-Ill Lee ◽  
Hong-Guo Liu
Keyword(s):  
Thin Films ◽  
Block Copolymers ◽  
Self Assembly ◽  
Adsorption Process ◽  
Composite Films ◽  
Liquid Interface ◽  
Liquid Interfaces ◽  
Composite Thin Films ◽  
Functional Composite ◽  
Air Liquid Interface

A new and facile approach was developed to fabricate functional composite films of block copolymers at the air/liquid interface through a self-emulsification, self-assembly and adsorption process.

Nanomanufacturing of high-performance hollow fiber nanofiltration membranes by coating uniform block polymer films from solution

2017 ◽  
Vol 5 (7) ◽  
pp. 3358-3370 ◽  
Author(s):  
Yizhou Zhang ◽  
Ryan A. Mulvenna ◽  
Bryan W. Boudouris ◽  
William A. Phillip
Keyword(s):  
Phase Separation ◽  
Hollow Fiber ◽  
Self Assembly ◽  
High Performance ◽  
Polymer Membranes ◽  
Dip Coating ◽  
The Self ◽  
Separation Method ◽  
Nanofiltration Membranes ◽  
Block Polymer

Block polymer membranes in the hollow fiber geometry were fabricated by combining the dip-coating archetype with the self-assembly and non-solvent induced phase separation method.

A new strategy to fabricate composite thin films with tunable micro- and nanostructures via self-assembly of block copolymers

2015 ◽  
Vol 51 (93) ◽  
pp. 16687-16690 ◽  
Author(s):  
Xingjuan Zhao ◽  
Qian Wang ◽  
Yong-Ill Lee ◽  
Jingcheng Hao ◽  
Hong-Guo Liu
Keyword(s):  
Thin Films ◽  
Block Copolymers ◽  
Self Assembly ◽  
Composite Films ◽  
Liquid Interface ◽  
Composite Thin Films ◽  
New Strategy ◽  
Air Liquid Interface

A new and facile strategy to fabricate composite thin films with tunable morphologies at the air/liquid interface is first reported, paving a new way for the generation of composite films in nanotechnology applications.

Self-Assembly of Polymer Thin Film on Chemically Patterned Substrate

2007 ◽  
Vol 121-123 ◽  
pp. 469-472 ◽  
Author(s):  
L. Zhang ◽  
Hao Li Zhang ◽  
D.G. Bucknall
Keyword(s):  
Thin Films ◽  
Phase Separation ◽  
Film Thickness ◽  
Self Assembly ◽  
Microcontact Printing ◽  
Interaction Mechanism ◽  
Polymer Particle ◽  
Thin Polymer Film ◽  
Patterned Substrate ◽  
Chemical Pattern

In this work, we have investigated phase separation behavior in PS/PVP polymer blend thin films on gold substrates that have chemical stripes of different periods made by microcontact printing. The influences of pattern period and film thickness have been studied. The experiments have testified that the best result of phase separation, as shown in OM image, was obtained when the period of the chemical pattern is similar to the polymer particle size. Meanwhile, the film thickness plays a significant role on the phase separation. The best pattern replication in the polymer thin films only occurs in a relative narrow thickness range, for example, in this case between 30 and 60 nm. The possible interaction mechanism of the thin polymer film with the underlayed chemical pattern has been discussed.

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