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Polymers for Electrical and Optical Applications

A topical collection in Polymers (ISSN 2073-4360). This collection belongs to the section "Polymer Applications".

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Editors

Prof. Dr. Dong Hwan Wang

E-Mail Website1 Website2
Collection Editor
School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
Interests: organic electronics (OPV, OPD, and Perovskite); device physics; nanomaterials (synthesis and characterization); nanomorphology control; nanopatterning; oxide materials; stamping-transfer nanotechnology
Special Issues, Collections and Topics in MDPI journals
Dr. Zhulin Huang

E-Mail Website
Collection Editor
Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HIPS, Chinese Academy of Sciences, Hefei 230031, China
Interests: plasmonic nanomaterials; environmental nanomaterials; surface-enhanced Raman scattering (SERS detection); ceramic precursor; ultrahigh temperature ceramic powders

Topical Collection Information

Dear Colleagues,

Since the advent of polymers with advanced electrical and optical properties, polymers have become an appealing material for components of state-of-the-art optoelectronic devices, such as organic or hybrid semiconductor-based electronic devices. Specifically, organic/polymeric materials-based devices have the potential to provide a solution to present energy issues and fulfils our future needs of realizing large surface area, lightweight, and high flexibility through low-cost techniques.

In order to improve the performance of polymer-based solar cells/photodetectors/hybrid applications, many strategies have been introduced such as: (1) synthesizing electron donor and acceptor materials with a wide absorption range; (2) controlling the nano-morphology; (3) efficient buffer layers; (4) flexible conductive electrodes; and (5) development of new device structures and (6) nanotechnologies, etc.

The aim of this topical collection is to highlight the progress and phenomena related to organic electronic devices such as photovoltaic cells, photo-sensors, thin film transistors, and light-emitting diodes, etc. We look forward to your contribution with your recent promising research.

Prof. Dr. Dong Hwan Wang
Dr. Zhulin Huang
Collection Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the collection website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • organic electronic devices
  • organic/inorganic and hybrid semiconductor-based device
  • synthetic metals and newly designed process
  • opto-electronics
  • photovoltaic cells
  • photo-sensors
  • interface control
  • nano-morphology
  • charge carrier dynamics
  • flexible transparent electrode
  • SERS-sensors

Published Papers (3 papers)

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2023

14 pages, 1601 KiB  
Article
The Effect of Silane Acrylate Containing Ethylene Glycol Chains on the Adhesive Performance and Viscoelastic Behavior of Acrylic Pressure-Sensitive Adhesives for Flexible Displays
by Woong Cheol Seok, Jong Tae Leem and Ho Jun Song
Polymers 2023, 15(17), 3601; https://doi.org/10.3390/polym15173601 - 30 Aug 2023
Cited by 4 | Viewed by 1454
Abstract
In this study, novel silane acrylates, such as diethylene glycol diacrylate (DEGDA) and tetraethylene glycol diacrylate (TEGDA), containing ethylene glycol chains were synthesized and introduced into acrylic pressure-sensitive adhesives (PSAs) to regulate their peel strength and rheological properties. The synthesized silane acrylates effectively [...] Read more.
In this study, novel silane acrylates, such as diethylene glycol diacrylate (DEGDA) and tetraethylene glycol diacrylate (TEGDA), containing ethylene glycol chains were synthesized and introduced into acrylic pressure-sensitive adhesives (PSAs) to regulate their peel strength and rheological properties. The synthesized silane acrylates effectively improved the cohesion and adhesive properties of the acrylic PSAs, even with only 1 wt% addition. In addition, the glass transition temperature and flexibility of acrylic PSAs were also affected by the increase in free volume induced by ethylene glycol chains. The silane acrylates also improved the viscoelasticity of the acrylic PSAs, which exhibited excellent recovery (62–96%) and stress relaxation (>90%) properties owing to the increased elasticity. Additionally, the acrylic PSAs prepared with the silane acrylates showed excellent optical properties (transmittance ≥ 90%, haze ≤ 1%) and exhibited behavior suitable for application in flexible displays from a comprehensive perspective. Full article
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20 pages, 3778 KiB  
Article
Surface Passivation for Promotes Bi-Excitonic Amplified Spontaneous Emission in CsPb(Br/Cl)3 Perovskite at Room Temperature
by Saif M. H. Qaid, Hamid M. Ghaithan, Huda S. Bawazir and Abdullah S. Aldwayyan
Polymers 2023, 15(9), 1978; https://doi.org/10.3390/polym15091978 - 22 Apr 2023
Cited by 14 | Viewed by 1769
Abstract
Perovskite-type lead halides exhibit promising performances in optoelectronic applications, for which lasers are one of the most promising applications. Although the bulk structure has some advantages, perovskite has additional advantages at the nanoscale owing to its high crystallinity given by a lower trap [...] Read more.
Perovskite-type lead halides exhibit promising performances in optoelectronic applications, for which lasers are one of the most promising applications. Although the bulk structure has some advantages, perovskite has additional advantages at the nanoscale owing to its high crystallinity given by a lower trap density. Although the nanoscale can produce efficient light emission, its comparatively poor chemical and colloidal stability limits further development of devices based on this material. Nevertheless, bulk perovskites are promising as optical amplifiers. There has been some developmental progress in the study of optical response and amplified spontaneous emission (ASE) as a benchmark for perovskite bulk phase laser applications. Therefore, to achieve high photoluminescence quantum yields (PLQYs) and large optical gains, material development is essential. One of the aspects in which these goals can be achieved is the incorporation of a bulk structure of high-quality crystallization films based on inorganic perovskite, such as cesium lead halide (CsPb(Br/Cl)3), in polymethyl methacrylate (PMMA) polymer and encapsulation with the optimal thickness of the polymer to achieve complete surface coverage, prevent degradation, surface states, and surface defects, and suppress emission at depth. Sequential evaporation of the perovskite precursors using a single-source thermal evaporation technique (TET) effectively deposited two layers. The PL and ASEs of the bare and modified films with a thickness of 400 nm PMMA were demonstrated. The encapsulation layer maintained the quantum yield of the perovskite layer in the air for more than two years while providing added optical gain compared to the bare film. Under a picosecond pulse laser, the PL wavelength of single excitons and ASE wavelength associated with the stimulated decay of bi-excitons were achieved. The two ASE bands were highly correlated and competed with each other; they were classified as exciton and bi-exciton recombination, respectively. According to the ASE results, bi-exciton emission could be observed in an ultrastable CsPb(Br/Cl)3 film modified by PMMA with a very low excitation energy density of 110 µJ/cm2. Compared with the bare film, the ASE threshold was lowered by approximately 5%. A bi-exciton has a binding energy (26.78 meV) smaller than the binding energy of the exciton (70.20 meV). Full article
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10 pages, 1790 KiB  
Article
The Formation of Volume Transmission Gratings in Acrylamide-Based Photopolymers Using Curcumin as a Long-Wavelength Photosensitizer
by Katherine Pacheco, Gabriela Aldea-Nunzi, Agnieszka Pawlicka and Jean-Michel Nunzi
Polymers 2023, 15(7), 1782; https://doi.org/10.3390/polym15071782 - 3 Apr 2023
Cited by 1 | Viewed by 1623
Abstract
Curcumin, a natural dye found in the Curcuma longa rhizome, commonly called turmeric, is used as a photosensitizer in acrylamide-based photopolymers for holographic data storage. We studied the absorbance of photopolymer films that show two absorption bands due to curcumin, acrylamide monomer (AA), [...] Read more.
Curcumin, a natural dye found in the Curcuma longa rhizome, commonly called turmeric, is used as a photosensitizer in acrylamide-based photopolymers for holographic data storage. We studied the absorbance of photopolymer films that show two absorption bands due to curcumin, acrylamide monomer (AA), and the crosslinking agent N,N′-methylenebisacrylamide (MBA). Analysis of the real-time diffraction efficiency of these films shows a maximum of 16% for the sample with the highest curcumin concentration. Moreover, increasing the curcumin load enhanced the refractive index contrast from 7.8 × 10−4 for the photopolymer with the lowest curcumin load to 1.1 × 10−3 for the photopolymer with the largest load. The sensitivity and diffraction efficiency of the recorded gratings also increased from 7.0 to 9.8 cm·J−1 and from 7.9 to 16% with the increase in curcumin load, respectively. Finally, the influence of NaOH on the photopolymerization of the AA-curcumin-based sample shows a diffraction efficiency increase with the NaOH content, revealing that the curcumin enol form is more efficient as a photosensitizer. Full article
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