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Polymers 2018, 10(7), 756; https://doi.org/10.3390/polym10070756

Self-Erasable Nanocone Antireflection Films Based on the Shape Memory Effect of Polyvinyl Alcohol (PVA) Polymers

1,2,†
,
3,†
,
4
,
1
,
3
and
1,2,*
1
Heilongjiang Provincial Key Laboratory of Metamaterials Physics and Device, Heilongjiang University, Harbin 150080, China
2
Acoustic Science and Technology Laboratory, College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China
3
Research Center of Ultra-Precision Optoelectronic Instrumentation, Harbin Institute of Technology, Harbin 150080, China
4
State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 31 May 2018 / Revised: 25 June 2018 / Accepted: 27 June 2018 / Published: 9 July 2018
(This article belongs to the Special Issue Soft Materials and Systems)
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Abstract

Arrays of nanostructure that are capable of broadband antireflection and light trapping properties are implemented in photovoltaic and photonic devices. However, most of the existing antireflection films have been hindered by a complicated fabricated method and structurally rigid. Here, we report a simple preparation method for self-erasable nanocone antireflection films using the surface replication method. Arrays of nanocone with sub-100 nm surface features could be replicated easily on the shape memory polyvinyl alcohol (PVA) film, and are erased by thermal stimulation. The reflectivity of self-erasable antireflection film can be switched from the 4.5% to 0.6% averaged over the visible spectral range by controlling the temperature below or above 80 °C. Theoretical simulations have been demonstrated. The unique smart film is expected to be used to further extend the application of smart optical windows and digital screens. View Full-Text
Keywords: self-erasable; antireflection film; shape memory polymer self-erasable; antireflection film; shape memory polymer
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Li, P.; Han, Y.; Wang, W.; Chen, X.; Jin, P.; Liu, S. Self-Erasable Nanocone Antireflection Films Based on the Shape Memory Effect of Polyvinyl Alcohol (PVA) Polymers. Polymers 2018, 10, 756.

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