Organic Optoelectronic Materials and Applications

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Organic Crystalline Materials".

Deadline for manuscript submissions: closed (15 March 2025) | Viewed by 1347

Special Issue Editors


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Guest Editor
Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA
Interests: organic optoelectronic materials; organic electronics; aggregate science; perovskite photovoltaics; photophysics

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Guest Editor
Department of Chemistry & Molecular Design Institute, New York University, New York, NY 10003, USA
Interests: crystal growth; crystal optics

Special Issue Information

Dear Colleagues,

This Special Issue on “Organic Optoelectronic Materials and Applications” provides a comprehensive overview of the latest advancements in organic optoelectronics. Organic materials with flexibility, a light-weight nature, and tunable properties are being investigated for a broad range of applications. These include flexible devices like organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs), as well as areas like bioimaging, chemical sensing, and biomedical probes.

Research in this issue focuses on improving material properties such as charge transport, luminescence quantum efficiency, stability, biocompatibility, stimuli-responsive properties, etc. It also discusses the development of new molecular structures, more efficient and cost-effective synthesis methods, and new photophysical theories. These advances are crucial for enhancing the performance and versatility of organic optoelectronic materials, driving both material design and the understanding of their underlying mechanisms.

In terms of applications, this Issue explores how these advanced materials can be used across various fields. For example, in optoelectronic devices, new materials and structures are leading to higher performance levels, including improved light-to-electricity interconversion efficiency and more effective device architectures. In bioimaging, they enable more precise and less invasive techniques. In chemical sensing and biomedical probes, they offer high sensitivity and target specificity, essential for accurate detection and biomedical theragnosis.

This collection highlights opportunities and challenges in organic optoelectronics, offering valuable insights for researchers and professionals. It supports the development of applications and promotes innovation across technological and scientific disciplines.

Dr. Junkai Liu
Prof. Dr. Bart Kahr
Guest Editors

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Keywords

  • flexible optoelectronics
  • light-electricity interconversion
  • advanced device architectures
  • biocompatible probes
  • photo-driven theragnosis
  • crystal structure

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Published Papers (1 paper)

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Research

12 pages, 4630 KiB  
Article
A Study on Cu Thin-Film Electroplated TiO2 Photoanodes for Applications in Natural Dye-Sensitized Solar Cells
by M. D. P. A. Shakya, K. M. D. C. Jayathilaka, W. T. R. S. Fernando, W. T. M. A. P. K. Wanninayake, L. S. R. Kumara, O. Seo, J. Tang, O. Sakata, W. P. Siripala and R. P. Wijesundera
Crystals 2025, 15(1), 28; https://doi.org/10.3390/cryst15010028 - 29 Dec 2024
Cited by 1 | Viewed by 1057
Abstract
Improving the performance of TiO2 photoanodes via the inclusion of metal particles on the electrode surface could provide significant advantages for the development of dye-sensitized solar cells (DSSCs). We studied a TiO2/Cu film electrode prepared by electrodepositing Cu particles on [...] Read more.
Improving the performance of TiO2 photoanodes via the inclusion of metal particles on the electrode surface could provide significant advantages for the development of dye-sensitized solar cells (DSSCs). We studied a TiO2/Cu film electrode prepared by electrodepositing Cu particles on a TiO2 film on an indium-doped tin oxide (ITO) substrate. Cu particles were electrodeposited on a TiO2 electrode at −700 mV vs. a Ag/AgCl electrode in an acetate bath, with the pH adjusted between 6.3 and 7.7 in 0.2 increments to optimize the deposition conditions. TiO2/Cu thin-film electrodes were tested as a photo anode in a natural DSSC consisting of a carbon counter electrode, Vitis vinifera dye, and a KI/I2-based electrolyte. Film characterization was performed using hard X-ray photoelectron spectroscopy (HAXPES), grazing incidence X-ray diffraction (GIXD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, electrochemical impedance spectroscopy (EIS), ultraviolet–visible spectroscopy (UV–Vis), and photocurrent density–voltage (J–V) measurements. DSSCs with Cu particles containing TiO2 electrodes prepared using an acetate bath of pH 7.3 resulted in a 370% improvement in efficiency compared to the DSSCs without Cu particles. Thus, this study revealed that incorporating Cu particles into the surface of the TiO2 electrode enhances the photovoltaic performance of DSSCs. Full article
(This article belongs to the Special Issue Organic Optoelectronic Materials and Applications)
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