Article
Nanoscience & Nanotechnology
Xin Yu, Zeyu He, Zhenhua Chen, Gang Yang, Caijun Zheng, Hui Lin, Xiaoyang Du, Silu Tao
Summary: The development of near-infrared organic photodetectors (NIR-OPDs) in the range of 1000-1700 nm is crucial for various applications, including medical monitoring, food quality inspection, machine vision, and biomedical imaging. However, achieving high-performance NIR-OPDs is challenging due to the trade-off between minimizing high dark current density (J(D)) and maintaining high photocurrent. In this study, a hybrid pseudo-PHJ/BHJ structure with the introduction of the N2200 layer is proposed, which effectively suppresses the J(D) while maintaining a high photocurrent, resulting in superior performance compared to traditional BHJ NIR-OPDs. The hybrid structured NIR-OPDs also show great potential in rapidly and accurately quantifying the alcohol content of mixtures for applications in the food and pharmaceutical industries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Yi Zhang, Qingyun Wei, Zhilong He, Yan Wang, Tong Shan, Yanyan Fu, Xiaojun Guo, Hongliang Zhong
Summary: Organic optoelectronic devices have unique photoresponse to near-infrared light and hold great potential in various fields. To meet the technical requirements of energy conversion and health sensing, there is a demand for high-performance near-infrared organic semiconductors. A new material, BFIC, is designed and synthesized by inserting fluorothieno[3,4-b]thiophene (FTT) as a pi-bridge, which extends conjugation, stabilizes quinoid resonant structure, and enhances intramolecular charge transfer. BFIC exhibits broad and intense absorption in the near-infrared region (700 to 1050 nm). A power conversion efficiency of 10.38% is achieved in an organic solar cell based on BFIC and polymer donor PTB7-Th. Additionally, the organic photodetector based on PTB7-Th:BFIC demonstrates a broad spectral response and one of the highest detectivities among broad-band organic photodetectors under the self-powered mode.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Kean You Thai, InJun Park, Beom Jin Kim, Anh Tuan Hoang, Yoondeok Na, Chul Un Park, Youngcheol Chae, Jong-Hyun Ahn
Summary: MoS2, a promising material in optoelectronics, has high light absorption efficiency but is currently limited to the visible spectrum. Strain engineering can modulate the bandgap to extend its application coverage to the infrared range. This study demonstrates a strained MoS2-based photodetector array that can capture vis-NIR images, showcasing its potential in real-life imaging systems.
Article
Multidisciplinary Sciences
Wladislaw Michailow, Peter Spencer, Nikita W. Almond, Stephen J. Kindness, Robert Wallis, Thomas A. Mitchell, Riccardo Degl'Innocenti, Sergey A. Mikhailov, Harvey E. Beere, David A. Ritchie
Summary: The authors report a new phenomenon called the in-plane photoelectric effect, which exhibits a giant photoresponse at terahertz frequencies. This provides an opportunity for efficient direct detection across the entire terahertz range.
Article
Chemistry, Multidisciplinary
Yingze Zhang, Yingjian Yu, Xinyu Liu, Junhui Miao, Yanchun Han, Jun Liu, Lixiang Wang
Summary: This study reports an all-fused-ring n-type molecule with an ultrasmall optical bandgap (1.22 eV) and strong near-infrared (NIR) absorption. The molecule consists of 14 aromatic rings and displays excellent n-type properties, with low-lying HOMO/LUMO energy levels (-5.48 eV/-3.95 eV) and high electron mobility (7.0 x 10(-4) cm(2) V-1 s(-1)). The thin film of this molecule exhibits low trap density (5.55 x 10(16) cm(-3)) due to fixed molecular conformation and low conformation disorder. Consequently, the organic photodetector (OPD) based on this compound demonstrates remarkably low dark current density (2.01 x 10(-10) A cm(-2) at 0 V) and high specific detectivity (exceeding 10(13) Jones at 400-1000 nm wavelength region, with a peak of 4.65 x 10(13) Jones at 880 nm). This performance is among the best reported for self-powered NIR OPDs.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Oliver G. Willis, Filippo Petri, Gennaro Pescitelli, Andrea Pucci, Enrico Cavalli, Alessandro Mandoli, Francesco Zinna, Lorenzo Di Bari
Summary: Novel chiral Er complexes based on (i)PrPyBox show strong near-infrared circularly polarized luminescence, which has potential applications in fields such as optical communications and bioimaging.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Biochemistry & Molecular Biology
Hiroki Masuoka, Yasuhiro Kubota, Toshiyasu Inuzuka, Kazumasa Funabiki
Summary: A new anionic heptamethine cyanine (HMC) dye with two trifluoromethyl groups has been synthesized, which selectively absorbs near-infrared light. Compared with previously studied anionic HMC dyes with substituents such as methyl, phenyl, and pentafluorophenyl groups, the trifluoromethylated dye exhibits a red-shifted maximum absorption wavelength (e.g. 948 nm in CH2Cl2) and enhanced photostability. Furthermore, HMC dyes with broad absorption in the near-infrared region are synthesized by combining a trifluoromethylated anionic HMC dye with a cationic HMC dye as a counterion.
Article
Nanoscience & Nanotechnology
Deanna Broadwater, Hyllana C. D. Medeiros, Matthew Bates, Amir Roshanzadeh, Shao Thing Teoh, Martin P. Ogrodzinski, Babak Borhan, Richard R. Lunt, Sophia Y. Lunt
Summary: Photodynamic therapy (PDT), which combines photoactive agents and light, has the potential to enhance cancer treatment by providing dual selectivity. However, current limitations of PDT, such as low tissue penetration and insufficient phototoxicity, can hinder its effectiveness. In this study, researchers developed a platform that can modulate the properties of photoactive ions, and demonstrated its utility in vivo using a mouse model of breast cancer. By pairing a near-infrared (NIR) photoactive cation with specific counterions, the researchers successfully generated a selectively phototoxic photosensitizer that inhibits tumor growth with minimal side effects. This work provides a proof of concept for improving cancer photosensitizers using the counterion pairing platform.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Dong Meng, Ran Zheng, Yepin Zhao, Elizabeth Zhang, Letian Dou, Yang Yang
Summary: Near-infrared (NIR)-absorbing organic semiconductors have revolutionized organic photovoltaic (OPV) research, enabling advancements in materials synthesis, device architecture, and efficiency improvement. This review categorizes NIR photovoltaic materials based on their absorption window and discusses the structure-property relationships to meet diverse application requirements. The potential of NIR materials in transparent OPVs, tandem OPVs, and photodetectors is highlighted, along with a discussion on the challenges and future directions for novel NIR materials in next-generation organic photovoltaics.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ben Yang, Yan Wang, Li Li, Junyao Zhang, Jianlu Wang, Hanxue Jiao, Dandan Hao, Pu Guo, Sheng Zeng, Zhekun Hua, Jia Huang
Summary: High performance IR phototransistors have been developed using ternary semiconductors with organic donor/acceptor complex and semiconducting single-walled carbon nanotubes (SWCNTs). This phototransistor achieves broadband photodetection with exceptional performance under 2000 nm light, demonstrating high photoresponsivity, detectivity, and external quantum efficiency. Additionally, the device can also function as synaptic devices under visible light, providing a new guide for developing high performance IR optoelectronics based on organic transistors.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Binbib Su, Shining Geng, Zewen Xiao, Zhiguo Xia
Summary: This study presents three novel 0D hybrid antimony chlorides with [Sb2Cl8]2- dimers, which exhibit unusually broad near-infrared (NIR) emission at room temperature. The emissions originate from highly localized excitons, and the [Sb2Cl8]2- dimers in these structures show low symmetry and a large degree of structural freedom.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Biomedical
Yang Xu, Jiaying Yu, Jinzhong Hu, Kai Sun, Wenjun Lu, Fenglian Zeng, Jian Chen, Min Liu, Zhuoer Cai, Xiaofan He, Wanying Wei, Baiwang Sun
Summary: A series of dimeric heptamethine cyanine photosensitizers with an aromatic diphenol linker at the meso position were developed for improved photothermal conversion efficiency. The screened 26NA-NIR and 44BP-NIR showed high PCE, bright NIR fluorescence, excellent ROS generation capability, and improved photostability. In vivo and in vitro experiments demonstrated their outstanding performance in imaging-guided PDT-PTT synergistic therapy.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Chemistry, Physical
Dou Luo, Yuniu Zhang, Lanqing Li, Chengwei Shan, Qian Liu, Zhaojin Wang, Wallace C. H. Choy, Aung Ko Ko Kyaw
Summary: This study develops three simple NFREAs with absorption up to 1000 nm and investigates their effects on photoelectric properties and device performances. By optimizing the device structure, high efficiency is achieved with low energy loss.
MATERIALS TODAY ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Zhuhua Xu, Chuying Sun, Siyi Min, Zilong Ye, Cong Zhao, Jingzhou Li, Zhenghao Liu, Youdi Liu, Wen-Di Li, Man-Chung Tang, Qinghua Song, H. Y. Fu, Feiyu Kang, Jiangyu Li, Yang Shen, Cunjiang Yu, Guodan Wei
Summary: This work demonstrates a NIR nanograting Si/organic heterojunction photodetector which achieves narrowband photodetection without integrating optical filters. It obtains a FWHM of only 26 nm and fast response of 74 μs at 895 nm, with the ability to tailor the response peak from 895 to 977 nm. The sharp and narrow response NIR peak is attributed to the coherent overlapping between the NIR transmission spectrum of the organic layer and diffraction enhanced absorption peak of patterned nanograting Si substrates.
Article
Chemistry, Multidisciplinary
Andrew I. Yakimov, Victor V. Kirienko, Aleksei A. Bloshkin, Dmitrii E. Utkin, Anatoly V. Dvurechenskii
Summary: The fabrication and optical characterization of Ge/Si QD pin photodiodes integrated with photon-trapping microstructures were reported, showing significantly enhanced responsivity due to the photon-trapping effect. The results make micro/nanohole Ge/Si QD photodiodes promising for remote infrared photodetection applications across a wide wavelength range.
Article
Engineering, Electrical & Electronic
John S. Bangsund, Kyle W. Hershey, Dominea C. K. Rathwell, Hong-Yeop Na, Jeong-Hwan Jeon, Peter Trefonas, Russell J. Holmes
JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY
(2019)
Article
Oncology
Anastasia Kariagina, Sophia Y. Lunt, J. Justin McCormick
Article
Multidisciplinary Sciences
Jonathan P. Rennhack, Briana To, Matthew Swiatnicki, Caleb Dulak, Martin P. Ogrodzinski, Yueqi Zhang, Caralynn Li, Evan Bylett, Christina Ross, Karol Szczepanek, William Hanrahan, Muthu Jayatissa, Sophia Y. Lunt, Kent Hunter, Eran R. Andrechek
NATURE COMMUNICATIONS
(2019)
Article
Physics, Applied
Robert Newcomb, John S. Bangsund, Kyle W. Hershey, Dominea C. K. Rathwell, Hong-Yeop Na, Jeong-Hwan Jeon, Peter Trefonas, Russell J. Holmes
APPLIED PHYSICS LETTERS
(2020)
Article
Oncology
Amanda E. Brinker, Carolyn J. Vivian, Thomas C. Beadnell, Devin C. Koestler, Shao Thing Teoh, Sophia Y. Lunt, Danny R. Welch
Article
Multidisciplinary Sciences
John S. Bangsund, Jack R. Van Sambeek, Nolan M. Concannon, Russell J. Holmes
Article
Chemistry, Physical
Catherine P. Clark, Jennifer E. Mann, John S. Bangsund, Wan-Ju Hsu, Eray S. Aydil, Russell J. Holmes
ACS ENERGY LETTERS
(2020)
Article
Biochemistry & Molecular Biology
Shao Thing Teoh, Mara L. Leimanis-Laurens, Sarah S. Comstock, John W. Winters, Nikita L. Vandenbosch, Jeremy W. Prokop, Andre S. Bachmann, Sophia Y. Lunt, Surender Rajasekaran
Summary: This study compared metabolic perturbations in viral bronchiolitis and found unique changes in plasma and urine metabolites. The severity of the disease was correlated with specific metabolites, and urinary metabolites showed higher predictive power for future development of asthma.
Article
Pediatrics
Madeleine M. Russell, Mara L. Leimanis-Laurens, Sihan Bu, Gigi A. Kinney, Shao Thing Teoh, Ruth-Anne L. McKee, Karen Ferguson, John W. Winters, Sophia Y. Lunt, Jeremy W. Prokop, Surender Rajasekaran, Sarah S. Comstock
Summary: This study investigated the feasibility of GI microbiome work in a pediatric intensive care unit and compared the GI microbiota composition of infants to control infants. The study found that the bacterial communities of PICU infants were less diverse than those of controls, with a loss of potentially protective populations.
Article
Physics, Applied
Matthew Bates, Sophia Y. Y. Lunt, Richard R. R. Lunt
Summary: This study investigates organic salt photovoltaics by fabricating a group of unexplored organic salts and observing different donor and acceptor decay trends. Exciton diffusion and charge transfer are successfully quantified independently, demonstrating the important role of charge on the chromophore.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Deanna Broadwater, Hyllana C. D. Medeiros, Matthew Bates, Amir Roshanzadeh, Shao Thing Teoh, Martin P. Ogrodzinski, Babak Borhan, Richard R. Lunt, Sophia Y. Lunt
Summary: Photodynamic therapy (PDT), which combines photoactive agents and light, has the potential to enhance cancer treatment by providing dual selectivity. However, current limitations of PDT, such as low tissue penetration and insufficient phototoxicity, can hinder its effectiveness. In this study, researchers developed a platform that can modulate the properties of photoactive ions, and demonstrated its utility in vivo using a mouse model of breast cancer. By pairing a near-infrared (NIR) photoactive cation with specific counterions, the researchers successfully generated a selectively phototoxic photosensitizer that inhibits tumor growth with minimal side effects. This work provides a proof of concept for improving cancer photosensitizers using the counterion pairing platform.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hyllana C. D. Medeiros, Chenchen Yang, Christopher K. Herrera, Deanna Broadwater, Elliot Ensink, Matthew Bates, Richard R. Lunt, Sophia Y. Lunt
Summary: This study introduces a phosphorescent octahedral molybdenum (Mo)-based nanoclusters as photosensitizers for photodynamic therapy (PDT). By modulating the apical ligand, the nanoclusters show tunability in cellular cytotoxicity and phototoxicity, and exhibit effective PDT against various aggressive cancer cells.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Oncology
Martin P. Ogrodzinski, Shao Thing Teoh, Sophia Y. Lunt
Summary: This study investigated metabolic differences between histologic subtypes of breast cancer, identifying preferences for different nucleotide metabolism pathways. Targeting the preferred pathways in each subtype had a greater impact on tumor growth, highlighting the potential for subtype-specific treatment strategies based on metabolic vulnerabilities.
Article
Materials Science, Multidisciplinary
Deepesh Rai, John S. Bangsund, Javier Garcia Barriocanal, Russell J. Holmes
JOURNAL OF MATERIALS CHEMISTRY C
(2020)
Proceedings Paper
Optics
John S. Bangsund, Russell J. Holmes
ORGANIC AND HYBRID LIGHT EMITTING MATERIALS AND DEVICES XXIII
(2019)
