Layer-by-Layer Nanofilms: Invention, Innovation, and Evolution

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Thin Films".

Deadline for manuscript submissions: closed (31 December 2020) | Viewed by 3332

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Interests: Thin Films and Nanotechnology

Special Issue Information

Dear Colleagues,

The nanoporous polymer membrane can be applied in a variety of fields, such as gas separation, water treatment, electrolytes and separators in batteries, and ion selective membranes. Particularly, nanoporous cellulose acetate membranes can be easily prepared by a special method utilizing both water-pressure and Cu metal salts.

The separation of olefin/paraffin gas mixtures such as propylene/propane is an important process in the petrochemical industry. To replace the previous distillation process, the facilitated transport membranes utilize both types of Fickian transport and carriers have become interested in this method due to its simple process.

Since the safety of separators in batteries has become very important in recent years, there is a great interest in cellulose acetate materials to have excellent thermal stability and chemical stability. Water pressure and Cd salts were used for the preparation of porous cellulose acetate, and the porosity was easily controlled by the amount of salt and strength of water-pressure.

In particular, we invite papers that deal with, but are not limited to, the following topics:

  • Nanoporous polymer membrane
  • Facilitated olefin transport
  • Nanoporous cellulose acetate
  • Layer-by-layer assembly
  • Multilayer structure

Prof. Jinkee Hong
Guest Editor

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Published Papers (1 paper)

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Research

16 pages, 4254 KiB  
Article
Irradiance in Mixed Coherent/Incoherent Structures: An Analytical Approach
by Janez Puhan, Árpád Bűrmen, Tadej Tuma and Iztok Fajfar
Coatings 2019, 9(9), 536; https://doi.org/10.3390/coatings9090536 - 22 Aug 2019
Cited by 4 | Viewed by 3080
Abstract
We propose a new method for a light energy flux density (or irradiance) calculation in an arbitrary multilayer stack containing coherent and incoherent layers. Although the well known General Transfer-Matrix Method (GTMM) can be successfully used for the overall reflectance and transmittance calculation, [...] Read more.
We propose a new method for a light energy flux density (or irradiance) calculation in an arbitrary multilayer stack containing coherent and incoherent layers. Although the well known General Transfer-Matrix Method (GTMM) can be successfully used for the overall reflectance and transmittance calculation, it does not allow us to obtain the corresponding irradiance depth profile straightforwardly. We show in this paper that subsequent phase-shift integrations over the incoherent layers result in the reflectance and transmittance expressions identical to those of the GTMM formulation. However, the alternative mathematical approach allows us to derive an analytical expression for irradiance at an arbitrary depth of the multilayer stack, thus making it possible to calculate the absorptance depth profile. In fact, the GTMM expressions for the overall reflectance and transmittance turn out to be special cases of the irradiance calculation at the incident and emergent surface of the multilayer stack. Consequently, the proposed Phase-shift Integration Method (PIM) represents a continuous irradiance calculation model without any energy imbalances on layer interfaces. In addition, since we are able to obtain analytical layer thickness derivatives, the PIM is suitable for use with gradient optimization methods. We verify the method on three cases of an encapsulated bifacial heterojunction silicon (HJ Si) solar cell, a perovskite solar cell, and a perovskite/silicon tandem solar cell, which all consist of thin and thick layers. Full article
(This article belongs to the Special Issue Layer-by-Layer Nanofilms: Invention, Innovation, and Evolution)
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