Review
Chemistry, Physical
Jun-Kyul Song, Min Sung Kim, Seungwon Yoo, Ja Hoon Koo, Dae-Hyeong Kim
Summary: Efforts have been made to overcome the limitations of conventional rigid optoelectronic devices by using functional nanomaterials and organic materials for mechanical deformability. Advanced device designs and unconventional fabrication methods have contributed to the development of soft optoelectronic devices, leading to the creation of new devices. The focus is on developing deformable photodetectors and light-emitting diodes, with a discussion on system-level applications and future prospects.
Article
Chemistry, Multidisciplinary
Po-Jung Huang, Kouji Taniguchi, Masato Shigefuji, Takatsugu Kobayashi, Masakazu Matsubara, Takao Sasagawa, Hiroyasu Sato, Hitoshi Miyasaka
Summary: The observation of the circular photogalvanic effect (CPGE) in new enantiomorphic 2D-OIHP lead iodides synthesized with organic chiral cations is reported, indicating the potential for engineering opto-spintronic functionalities. The CPGE photocurrents show light-helicity-dependent behavior and sign reversal based on the chirality of the designed 2D-OIHP lead iodides, suggesting the formation of a radial spin-polarized texture in k-space of chiral systems due to spin-momentum locking.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Neelam Gupta, Mangey Ram Nagar, Biswajit Anamika, Prakalp Gautam, Biswajit Maiti, Jwo-Huei Jou, Biplab Kumar Kuila
Summary: The development of solution-processable blue electroluminescence materials for OLED applications has attracted significant research interest. However, the lack of side chains or functional groups on the backbones of framework/network materials makes them generally insoluble and less solution-processable for electronic device applications. In this study, two triazine-based donor-acceptor conjugated polymer networks (CPNs) with highly fluorescent and wide band gaps were reported, and side chains were introduced to improve their solution-processability. The physicochemical and optoelectronic properties of these emitters were characterized, and the OLEDs based on these CPNs showed promising performance for blue emission, indicating the high potential of conjugated polymer network emitters for future OLED applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Review
Optics
Mahdiyar Nouri Rezaie, Shahram Mohammadnejad, Shabnam Ahadzadeh
Summary: The review paper discusses various hybrid inorganic/organic light-emitting diodes (I/O LEDs) based on zinc oxide (ZnO) and conjugated polymers, analyzing their structural, electrical, and optical characteristics and applications. Optoelectronic features of these hybrid LEDs are influenced by n-type ZnO nanostructures, and their electroluminescent intensity can be enhanced by selecting suitable p-type conjugated polymers or adding dopants. Challenges, comparisons, and future prospects of these hybrid LEDs, including the use of nanotubes, quantum dots, and perovskite layers, have also been explored.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Rachith Shanivarasanthe Nithyananda Kumar, Robbe Breugelmans, Xueshi Jiang, Shabnam Ahadzadeh, Guy Brammertz, Pieter Verding, Michael Daenen, Melissa Van Landeghem, Sofie Cambre, Koen Vandewal, Wim Deferme
Summary: The use of polyethylenimine ethoxylated (PEIE), Zinc oxide (ZnO) nanoparticles, and a PEIE-ZnO nanocomposite as functional layers for OLEDs fabricated by solution processing improves electron injection and hole blocking properties, resulting in increased external quantum efficiency. This novel deposition technique offers comparable OLED performance to spin coated and vacuum deposited electron injection layers, enabling the large area fabrication of optoelectronic devices with high efficiencies, high output, low cost, and long lifetime.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Farshad Serat Nahaei, Ali Rostami, Peyman Mirtaheri
Summary: A comprehensive study has been conducted comparing quantum dot reflective semiconductor optical amplifiers (QD-RSOAs) with optical pumps (OPs) and electrical pumps (EPs). It is found that the OP version of the device has better dynamic properties. The operation of the device in pulse mode is investigated by solving the coupled differential rate and signal propagation equations. The results demonstrate that OP QD-RSOAs can significantly outperform EP QD-RSOAs in applications such as fast all-optical signal processing and wavelength division multiplexing in passive optical networks.
Article
Chemistry, Multidisciplinary
Haibo Li, Yi Lv, Zhennan Zhou, Hua Tong, Wei Liu, Gangfeng Ouyang
Summary: The study demonstrates a novel and facile strategy for designing and synthesizing highly luminescent copper halide hybrid structures by fabricating coordinated anionic inorganic modules in ionic species. These structures exhibit high internal quantum yields up to 98% and combine luminescence from ionic and covalent bonds, making them ideal candidates for light-emitting materials in optoelectronic devices as alternative to rare-earth elements.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Multidisciplinary
Liqun Liu, Chang Cai, Zejian Zhang, Shitong Zhang, Jian Deng, Bing Yang, Cheng Gu, Yuguang Ma
Summary: The organic lamellar single crystal reported serves as a versatile optoelectronic material with low threshold energy and high quantum efficiency, showing extraordinary device performance in optical pumping and light-emitting transistors.
ACS MATERIALS LETTERS
(2021)
Review
Physics, Applied
Shrreya Krishnamurthy, Padmini Pandey, Jagjit Kaur, Sudip Chakraborty, Pabitra K. Nayak, Aditya Sadhanala, Satishchandra Ogale
Summary: This review summarizes the latest research progress and challenges faced in the field of organic-inorganic hybrid perovskites and inorganic halide perovskites in photovoltaics and optoelectronics, as well as strategies to control their properties and eliminate defects.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Nguyen Ngan Nguyen, Hyo Chan Lee, Kangkyun Baek, Min Seok Yoo, Hansol Lee, Hyungsub Lim, Shinyoung Choi, Cheol-Joo Kim, SungWoo Nam, Kilwon Cho
Summary: The hybrid graphene template enables the preparation of highly crystalline organic semiconductor thin films with large grain sizes. Compared to conventional graphene templates, phototransistors fabricated on this hybrid template exhibit significantly higher photoresponsivity.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
GuiQian Huang, HaiLun Zhou, ChengPeng Wang, Chiranjeevulu Kashi, XiaoLiang Ye, WenHua Li, Guan-E Wang, Gang Xu
Summary: The newly synthesized inorganic-organic hybrid material shows good stability and semiconductor behavior, with great potential for humidity sensing.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Ling-Xuan Hong, Wen-Tse Huang, Zhen Bao, Yi-Shin Chen, Ru-Shi Liu
Summary: As the demand for miniaturization in electronic devices increases, there is a growing need for stable luminous nanomaterials. This study successfully achieved nanosization of highly green-luminous metal halide (C10H16N)(2)MnBr4 by embedding it in mesopores through an easy synthesis. The resulting nanostructure, (C10H16N)(2)MnBr4/SBA-15, showed excellent photoluminescence performance and color gamut, providing a promising strategy for the development of micro-LEDs.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xiao Liang, Emek G. Durmusoglu, Maria Lunina, Pedro Ludwig Hernandez-Martinez, Vytautas Valuckas, Fei Yan, Yulia Lekina, Vijay Kumar Sharma, Tingting Yin, Son Tung Ha, Ze Xiang Shen, Handong Sun, Arseniy Kuznetsov, Hilmi Volkan Demir
Summary: This study demonstrates the control of electrostatic interactions in semiconductor nanocrystals through a doubly gradient core-shell architecture, paving the way for the development of high-performance optoelectronic devices.
Article
Chemistry, Multidisciplinary
Minh Nhut Le, Kang-Jun Baeg, Kyung-Tae Kim, Seung-Han Kang, Byung Doo Choi, Chan-Yong Park, Seong-Pil Jeon, Sol Lee, Jeong-Wan Jo, Seonhyoung Kim, Jun-Gu Park, Dongil Ho, Jongin Hong, Miso Kim, Han-Ki Kim, Choongik Kim, Kwanpyo Kim, Yong-Hoon Kim, Sung Kyu Park, Myung-Gil Kim
Summary: Stress-diffusive organic-inorganic hybrid superlattice nanostructures have been developed to overcome the mechanical limitations of metal oxides in flexible electronic applications, providing high electrical conductivity and mechanical stability.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Suhyeon Lee, Donghyo Hahm, Suk-Young Yoon, Heesun Yang, Wan Ki Bae, Jeonghun Kwak
Summary: In this study, a novel concept of QD-organic hybrid light-emitting diodes (QLEDs) is presented, which improves the performance of QLEDs and simplifies the manufacturing process, leading to higher resolution and full-color displays.
Article
Biochemical Research Methods
Natalie Bruce, Francesca Farrell, Enyuan Xie, Mark G. Scullion, Anne-Marie Haughey, Erdan Gu, Martin D. Dawson, Nicolas Laurand
Summary: A fluorescence sensor capable of spatially multiplexed measurements using smartphone detection is introduced. Bioconjugated quantum dots are employed as the fluorescent label and excited by a blue-emitting microLED. The one-dimensional GaN microLED array is butt-coupled to one edge of a glass slide to utilize total internal reflection fluorescence (TIRF) principles. Bioassays on the glass waveguide's top surface are excited, and the resulting fluorescence is detected using a smartphone. The red, green, and blue channels of the digital image are used to spectrally separate the excitation light from the fluorescence for analysis. Proof-of-principle experiments using a biotin-functionalized glass slide demonstrate the detection of streptavidin conjugated quantum dots down to a concentration of 8 nM.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Optics
Graeme E. Johnstone, Johannes Herrnsdorf, Martin D. Dawson, Michael J. Strain
Summary: Challenging imaging applications that require ultra-short exposure times or imaging in photon-starved environments often have extremely low numbers of photons per pixel (<1 photon per pixel). To improve the image quality in such photon-sparse images, post-processing techniques, such as Bayesian retrodiction and bilateral filtering, can be used to estimate the number of photons detected and improve the spatial distributions in single-photon imaging applications. In this study, we demonstrate that at high frame rates (>1 MHz) and low incident photon flux (<1 photon per pixel), image post-processing techniques can provide better grayscale information and spatial fidelity of reconstructed images compared to simple frame averaging, with up to a 3-fold improvement in SSIM.
Editorial Material
Chemistry, Physical
Jonathan Keeling, Graham Turnbull
Summary: Time-dependent pump-probe studies of polaritonic transport at the interface of a distributed Bragg reflector between organic molecules and Bloch surface waves formed by strong coupling reveal a transition from diffusive to ballistic behavior.
Article
Oncology
Iago P. F. Nunes, Pedro J. L. Crugeira, Fernando J. P. Sampaio, Susana C. P. S. de Oliveira, Juliana M. Azevedo, Caio L. O. Santos, Luiz G. P. Soares, Ifor D. W. Samuel, Saydulla Persheyev, Paulo F. de Ameida, Antonio L. B. Pinheiro
Summary: This study aimed to evaluate the efficacy of photodynamic therapy (PDT) using dimethyl methylene blue zinc chloride double salt (DMMB) and red LED light on Candida albicans. The results showed that applying double PDT in a single session was the most effective approach for inhibiting the proliferation of Candida albicans.
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
(2023)
Article
Biochemistry & Molecular Biology
Bethan K. Charlton, Dillon H. Downie, Isaac Noman, Pedro Urbano Alves, Charlotte J. Eling, Nicolas Laurand
Summary: This study demonstrates the surface functionalisation of self-assembled colloidal quantum dot supraparticle lasers with a thrombin binding aptamer. The self-assembly of CdSSe/ZnS alloyed core/shell microsphere-shape CQD supraparticles emitting at 630 nm was achieved using an oil-in-water emulsion technique. The surface modification of the microspheres was successfully carried out, while retaining the lasing functionality.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biology
Sofie E. Voerman, Beauregard C. Marsh, Ricardo G. Bahia, Guilherme H. Pereira-Filho, Ana Clara F. Becker, Gilberto M. Amado-Filho, Arvydas Ruseckas, Graham A. Turnbull, Ifor D. W. Samuel, Heidi L. Burdett
Summary: Investigated the photo- and chromatic acclimation and morphological change of red coralline algae in mesophotic depths. Results showed that these algae can maintain photosynthetic function under decreasing light intensity and spectral availability, but this leads to smaller and less complex thalli. The photo-acclimatory response is conserved at least at the Order level, while chromatic acclimation is not depth-dependent. Use of photoprotection is necessary at 65 m depth, while optimal light levels are met at 86 m.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Eleni Margariti, Gemma Quinn, Dimitars Jevtics, Benoit Guilhabert, Martin D. Dawson, Michael J. Strain
Summary: A continuous, single shot roller transfer printing process is introduced for large-scale hybrid integration of semiconductor devices. It demonstrates transfer of a 320 x 240 pixel micro-LED array, with sub-micron relative position accuracy, representing over 75,000 individual devices in one shot. The transfer printing process maintains array geometry, with pixel spatial location error less than 1 & mu;m deviation from the as-designed layout. An automated sub-micron precision metrology system using simple optical microscopy is developed to assess device populations and yield.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Multidisciplinary Sciences
Marta Piksa, Wojciech Fortuna, Cheng Lian, Malgorzata Gacka, Ifor D. W. Samuel, Katarzyna Matczyszyn, Krzysztof J. Pawlik
Summary: We evaluated the efficacy of antimicrobial Photodynamic Therapy (APDT) using organic light-emitting diodes (OLED) for antibiotic-resistant clinical strains from diabetic foot ulcers. The isolated strains from diabetic foot ulcers were identified and tested for antibiotic susceptibility. APDT using OLED as a light source and methylene blue as a photosensitizer effectively reduced pathogens and opportunistic bacteria regardless of drug resistance.
SCIENTIFIC REPORTS
(2023)
Article
Nanoscience & Nanotechnology
Jonathon Harwell, Ifor D. W. Samuel
Summary: This study demonstrates the use of nanoimprint lithography to fabricate honeycomb-shaped, quasi-interdigitated electrode structures for back-contact perovskite solar cells. The efficiency of the resulting devices remains almost unchanged as the electrode width is varied from 230 to 2000 nm, suggesting that improving the quality of charge transport layers and reducing recombination are more important for maximizing the performance of these solar cells than reducing the minimum feature size.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Benoit Guilhabert, Sean P. Bommer, Nils K. Wessling, Dimitars Jevtics, Jack A. Smith, Zhongyi Xia, Saptarsi Ghosh, Menno Kappers, Ian M. Watson, Rachel A. Oliver, Martin D. Dawson, Michael J. Strain
Summary: Transfer printing technology has been widely used for integrating planar membrane devices on photonic and electronic circuits. This work introduces an advanced transfer print system that allows printing of optical devices in non-planar geometries and enables in-situ optical monitoring. The system demonstrates the printing of micro-resonators coupled to on-chip waveguides, inverted device printing, and the assembly of micro-cavities with semiconductor micro-lenses and nanowire lasers. Non-standard substrates such as optical chip facets and single-mode fibre ends are also successfully printed. The in-situ optical coupling through the transfer printing system enables real-time active alignment of the printed devices.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Jonathan J. D. McKendry, Enyuan Xie, Jordan Hill, Hichem Zimi, Johannes Herrnsdorf, Erdan Gu, Robert K. Henderson, Martin D. Dawson
Summary: This article reports a deep ultraviolet AlGaN micro-LED array driven by electronic drivers implemented in CMOS technology. The integrated device allows independent control of each micro-LED and has potential applications in various fields.
IEEE PHOTONICS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Jordan Hill, Cheng Chen, Enyuan Xie, Jonathan J. D. Mckendry, Johannes Herrnsdorf, Erdan Gu, Harald Haas, Martin D. Dawson
Summary: We systematically investigate the performance of UV-C LEDs for optical wireless communication, focusing on the device size dependence. Smaller devices exhibit lower optical power but faster modulation speed. The study finds that a 60 μm diameter LED transmitter achieves the highest average SNR and SE, with a data transmission rate of up to 5.53 Gbps.
IEEE PHOTONICS JOURNAL
(2023)
Article
Chemistry, Physical
Edward B. Ogugu, Ross N. Gillanders, Salam Mohammed, Graham A. Turnbull
Summary: Organic semiconductors can be used for detecting trace vapours of explosives, but the fluorescence quenching is irreversible. This study demonstrates reversible control of analyte binding and release in fluorescent polymer sensors by thermal control.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Proceedings Paper
Nanoscience & Nanotechnology
Jack A. Smith, Zhibo Li, Saprtarsi Ghosh, Henry Francis, Gabriele Navickaite, Loyd J. McKnight, Rachel A. Oliver, Martin D. Dawson, Michael J. Strain
Summary: Silicon nitride (Si3N4) is a high-performance material platform for visible wavelength photonic integrated circuits, especially for heterogeneous/hybrid integration of complementary materials. This work characterizes the performance of Si3N4 from LIGENTEC as a base for hybrid integration.
2023 IEEE PHOTONICS SOCIETY SUMMER TOPICALS MEETING SERIES, SUM
(2023)
