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Applied Sciences
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Advanced Optoelectronic Devices
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Advanced Optoelectronic Devices

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: 20 April 2024 | Viewed by 7019

Special Issue Editor

Dr. Chun-Chieh Chang

E-Mail Website
Guest Editor
Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, NM 87545, USA
Interests: metamaterials; plasmonics; terahertz science and technology; semiconductor optoelectronics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The past decades have witnessed the rapid development of optoelectronic device for the generation, detection, and propagation of light over a wide spectral range. Advanced optoelectronic devices have facilitated numerous novel light-wave technologies promising to replace conventional electronic technologies for future data storage and information processing. High-performance optoelectronic devices with enhanced efficiency, larger tunability, greater output power, higher sensitivity, and a smaller environmental footprint are being pursued intensively through innovative device design, improved material preparation and device processing, and advanced characterization techniques. For this Special Issue of Applied Sciences, we are inviting the submission of original reports, perspectives, and reviews on advanced optoelectronic devices concerning these aspects. Topics of interests include, but are not limited to, the following:

  • Nanoscale lasers, detectors, modulators;
  • Two-dimensional material (graphene, transition metal dichalcogenide, MXene, etc.)-based optoelectronics;
  • Optoelectronics integrated with engineered electromagnetic structures: metamaterials, metasurfaces, plasmonic structures, and photonic crystals;
  • Group IV semiconductor (Si, Ge, GeSn, etc.)-based optoelectronics;
  • Ultrawide-bandgap semi-conductor (β-Ga2O3, AlN, SiC, diamond, etc.)-based optoelectronics for ultraviolet;
  • Spin- and chiral-optoelectronic materials and devices;
  • Mid-infrared and terahertz optoelectronics;
  • Bio-inspired optoelectronics;
  • Topological insulator materials for advanced optoelectronic devices;
  • Artificial-intelligence- and machine-learning-enabled optoelectronics;
  • Advanced optoelectronic devices (mini-LEDs, micro-LEDs, etc.) for consumer electronic/AR /VR applications.

Dr. Chun-Chieh Chang
Guest Editor

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 special issue 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. Applied Sciences 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 2400 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

  • optoelectronics
  • photonics
  • lasers
  • LEDs
  • photodetectors
  • modulators
  • photovoltaics
  • semiconductors

Published Papers (6 papers)

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Research

12 pages, 2347 KiB  
Communication
Analysis and Design of Infrared Search and Track System with Afocal Zoom Telescope
by Rui Qu, Hongwei Zhang, Lei Yang and Weining Chen
Appl. Sci. 2023, 13(24), 13132; https://doi.org/10.3390/app132413132 - 09 Dec 2023
Viewed by 842
Abstract
The infrared search and track system (IRST) is a type of special electrical optical (EO) system that can be used in various scenarios to fulfill situation awareness, reconnaissance, and tracking of targets. We proposed a homogeneous coordinate transformation method to analyze the residual [...] Read more.
The infrared search and track system (IRST) is a type of special electrical optical (EO) system that can be used in various scenarios to fulfill situation awareness, reconnaissance, and tracking of targets. We proposed a homogeneous coordinate transformation method to analyze the residual image wandering induced by the rotation of the scanning platform and the compensation fast steering mirror and help with the commonly trivial selection of the telescope magnification and the objective focal length. The analysis and simulation are carried out with specified IRST optics, which adopt a 640 × 512 array and 15 μm pitch detector, in a focal range of 60 mm~360 mm, and a scan speed of 360°/s to 60 °/s at 50 fps, and optical specifications are determined further. The presented optical system, with only three kinds of common infrared materials, works at 3.7 μm~4.8 μm, demonstrates good image performance and tolerance characteristics, and shows potential in manufacturing. Also, the resulting image wandering of 8 μm, less than a 0.6-pixel size, at an integral time of 16 ms, proves the correctness of the method and makes the scheme of considerable interest for electrical optical systems. Full article
(This article belongs to the Special Issue Advanced Optoelectronic Devices)
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18 pages, 4013 KiB  
Article
Wet-Deposited TADF-Based OLED Active Layers: New Approaches towards Further Optimization
by Francisco Teixeira, José Carlos Germino and Luiz Pereira
Appl. Sci. 2023, 13(21), 12020; https://doi.org/10.3390/app132112020 - 03 Nov 2023
Viewed by 683
Abstract
The effects of the solvent used for the active layer materials of an OLED based on TADF emitters play a fundamental role in solution-deposited devices. This work focuses on the effects on the performance of different solvents employed to fabricate a very simple [...] Read more.
The effects of the solvent used for the active layer materials of an OLED based on TADF emitters play a fundamental role in solution-deposited devices. This work focuses on the effects on the performance of different solvents employed to fabricate a very simple two-organic-layer OLED based on a green TADF emitter, under the concept of host: guest matrix. From the different results of the main figures of merit, it was possible to conclude that the OLED that used toluene as a solvent for the active layer reached a maximum EQE of 14%, almost the maximum already obtained for this emitter in more complex device structures. With the analysis of the charge-transport processes, it was possible to establish an explanatory model for the obtained results. Through impedance spectroscopy, additional characterization of the nature of charge-transport processes was carried out. With these results, it was possible to correlate the relaxation times, with the electrical properties of the active layer, and make inferences about the interaction between the electrical charges and the defect levels, opening new possibilities for further development in printed OLEDs. Full article
(This article belongs to the Special Issue Advanced Optoelectronic Devices)
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10 pages, 2888 KiB  
Communication
A Photon Imaging Detector Model with High Resolution and High Counting Rate
by Zhongzhi Jiang and Qiliang Ni
Appl. Sci. 2023, 13(9), 5798; https://doi.org/10.3390/app13095798 - 08 May 2023
Cited by 1 | Viewed by 1000
Abstract
A cross strip (XS) anode detector is a photon-counting imaging detector with high spatial resolution. However, due to the Poisson distribution characteristics of the photons emitted by the target, photons with a small time interval will cause signal superposition and resolution degradation. This [...] Read more.
A cross strip (XS) anode detector is a photon-counting imaging detector with high spatial resolution. However, due to the Poisson distribution characteristics of the photons emitted by the target, photons with a small time interval will cause signal superposition and resolution degradation. This is particularly significant at a high photon count rate. The key link that restricts the counting rate of the XS detector is the electronic system. In this paper, we propose a new electronic signal processing system scheme using a digital trapezoidal shaping filter instead of a traditional Gaussian shaping filter, which enables the detector to maintain a high resolution at high count rates. In order to verify the feasibility of the scheme, the relationship between shaping errors and shaping parameters is studied. Furthermore, the relationship between spatial resolution and photon-counting rate at different noise levels is revealed by numerical simulation. The results show that the detector can achieve a spatial resolution of <50 μm at a photon count rate of >6 MHz for 1000 e RMS noise. Full article
(This article belongs to the Special Issue Advanced Optoelectronic Devices)
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13 pages, 3428 KiB  
Article
A Cost-Effective Triplet Lens Design with Chromatic Aberration Correction Based on Optimization Algorithm and Illustration Method
by Wen-Shing Sun, Chuen-Lin Tien, Siao-Suang Liang and Jhe-Syuan Lin
Appl. Sci. 2022, 12(23), 11881; https://doi.org/10.3390/app122311881 - 22 Nov 2022
Cited by 2 | Viewed by 1178
Abstract
This paper proposes an optimization algorithm combined with an illustration method to select the three best glass materials for the design of a thickened triplet lens and a correction of the paraxial chromatic aberrations. In the thin lens thickening process, chromatic aberration arises [...] Read more.
This paper proposes an optimization algorithm combined with an illustration method to select the three best glass materials for the design of a thickened triplet lens and a correction of the paraxial chromatic aberrations. In the thin lens thickening process, chromatic aberration arises from the deviation between the real and paraxial chromatic aberrations. To solve this problem, we propose an optimization algorithm and illustration method, which are integrated into a thickened triplet lens design. We optimize the eight thickened triplet lens groups to obtain the longitudinal chromatic aberration curve for the best group in the visible light range from 0.4861 μm to 0.6563 μm. The chromatic aberration curve area is 3.33 × 10−7 (μm × mm) for the longitudinal chromatic aberration and 2.11 × 10−5 (μm × mm) for the lateral chromatic aberration. Finally, the chromatic aberration of the thicken triplet lens is close to that of the thin triplet lens design, and the proposed method can obtain a good optical performance. Full article
(This article belongs to the Special Issue Advanced Optoelectronic Devices)
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17 pages, 4133 KiB  
Article
Research on Improving Optical Field Distribution of TOSA Based on 3D Defocusing Coupling
by Xinhui Ding, Shi Dong and Jing Jiang
Appl. Sci. 2022, 12(20), 10469; https://doi.org/10.3390/app122010469 - 17 Oct 2022
Viewed by 1404
Abstract
The four-direction performance of a TOSA and power tested with different jumpers are affected by the optical field distribution of the TOSA. In order to improve the optical field distribution of a TOSA, this paper analyzes the factors affecting optical field distribution in [...] Read more.
The four-direction performance of a TOSA and power tested with different jumpers are affected by the optical field distribution of the TOSA. In order to improve the optical field distribution of a TOSA, this paper analyzes the factors affecting optical field distribution in the core and cladding of fiber and establishes a 3D defocusing coupling model to improve the uniform distribution of the optical field. The verification between the 2D coupling model and 3D defocusing coupling model shows that four-direction performance with 3D defocusing coupling is less than 1.0 dB, and the difference of power tested with different jumpers is not more than 0.5 dB. The results are better than that of a TOSA with a conventional coupling model, and the reliability and yield of the TOSA are higher. The 3D defocusing coupling model has practical guiding significance and economic value in TOSA production. Full article
(This article belongs to the Special Issue Advanced Optoelectronic Devices)
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11 pages, 3725 KiB  
Article
Design and Performance of Photon Imaging Detector Based on Cross-Strip Anode with Charge Induction
by Zhongzhi Jiang and Qiliang Ni
Appl. Sci. 2022, 12(17), 8471; https://doi.org/10.3390/app12178471 - 25 Aug 2022
Cited by 4 | Viewed by 1229
Abstract
Imaging detectors based on a microchannel plate (MCP) and charge division anode with charge induction have broad applications in particles (photons, neutrons, ions, and electrons) detection. However, the application of a charge induction readout mode is mostly focused on planar anodes, and there [...] Read more.
Imaging detectors based on a microchannel plate (MCP) and charge division anode with charge induction have broad applications in particles (photons, neutrons, ions, and electrons) detection. However, the application of a charge induction readout mode is mostly focused on planar anodes, and there are few reports on double-layer cross-strip (XS) anodes with high spatial resolution and low gain requirements. In this paper, we design the parameters of the resistive layer and XS anode by theoretical derivation and the three-dimensional finite element method, including the sheet resistance, substrate thickness, strip width, and insulation thickness. The performance of the XS detector is characterized with the help of a resolution target and full field illumination using three different centroid algorithms. We conclude that the modified center of gravity (MCoG) has best imaging performance, which achieves a spatial resolution of 44.2 μm with a periodic distortion about 25.8%. Full article
(This article belongs to the Special Issue Advanced Optoelectronic Devices)
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