Yuto Yoneda, Srinivasa Rao Allam, William R. Kerridge-Johns, Yasushi Fujimoto, Takashige Omatsu
The generation of multicolor (523, 605, 637, and 719 nm) optical quasiparticles (bimerons and skyrmions with topologically protected polarization textures) from a diode-pumped Pr3+-doped fluoro-aluminate glass (Pr3+: WPFG) fiber simply with intra-cavity plano-convex lens and wedge-plate and without any wavefront control elements, such as a spatial light modulator is demonstrated. This robust and cost-saving system efficiently produces Bloch-, Néel-, and anti-quasiparticles with high mode purity. In particular, the green optical quasiparticles will have the potential to explore many applications in materials science and biotechnologies.
{"title":"Multi-Color Optical Quasiparticle Laser Source Formed of a Pr3+ Doped Fiber Laser with a Dual-Output Coupling Geometry","authors":"Yuto Yoneda, Srinivasa Rao Allam, William R. Kerridge-Johns, Yasushi Fujimoto, Takashige Omatsu","doi":"10.1002/lpor.202401403","DOIUrl":"https://doi.org/10.1002/lpor.202401403","url":null,"abstract":"The generation of multicolor (523, 605, 637, and 719 nm) optical quasiparticles (bimerons and skyrmions with topologically protected polarization textures) from a diode-pumped Pr<sup>3+</sup>-doped fluoro-aluminate glass (Pr<sup>3+</sup>: WPFG) fiber simply with intra-cavity plano-convex lens and wedge-plate and without any wavefront control elements, such as a spatial light modulator is demonstrated. This robust and cost-saving system efficiently produces Bloch-, Néel-, and anti-quasiparticles with high mode purity. In particular, the green optical quasiparticles will have the potential to explore many applications in materials science and biotechnologies.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"10 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142601269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Keyi Zhong, Yaojing Zhang, Shuangyou Zhang, Yuanfei Zhang, Yuan Li, Yue Qin, Yi Wang, Jose M. Chavez Boggio, Xiankai Sun, Chester Shu, Pascal Del'Haye, Hon Ki Tsang
Benefitting from the mature, cost‐effective, and scalable manufacturing capabilities of complementary metal‐oxide‐semiconductor (CMOS) technology, silicon photonics has facilitated the seamless and monolithic integration of diverse functionalities, including optical sources, modulators, and photodetectors. Microresonators can generate multiple coherent optical frequency comb lines and serve as optical sources. However, at the telecom band, silicon suffers from two‐photon absorption and free‐carrier absorption, which severely hampers the realization of microcombs from a single silicon chip at telecom wavelengths until now. In this paper, a novel approach is presented and demonstrated with near‐infrared dual‐band frequency combs from a multimode silicon resonator. With a single pumping configuration, dual‐band combs are generated from the interaction between the pump and Raman Stokes fields by involving two different optical mode families but with similar group velocities. It is observed that the pump power required to generate dual‐band combs is as low as 0.7 mW. The work in bringing telecom microcombs to the silicon platform will advance silicon photonics for the next generation of monolithically integrated technology based on a single silicon chip, enabling new possibilities for further exploring silicon photonics‐based applications in optical telecommunications, sensing, and quantum metrology in the telecom band using a monolithic single silicon chip.
{"title":"Near‐Infrared Dual‐Band Frequency Comb Generation from a Silicon Resonator","authors":"Keyi Zhong, Yaojing Zhang, Shuangyou Zhang, Yuanfei Zhang, Yuan Li, Yue Qin, Yi Wang, Jose M. Chavez Boggio, Xiankai Sun, Chester Shu, Pascal Del'Haye, Hon Ki Tsang","doi":"10.1002/lpor.202301366","DOIUrl":"https://doi.org/10.1002/lpor.202301366","url":null,"abstract":"Benefitting from the mature, cost‐effective, and scalable manufacturing capabilities of complementary metal‐oxide‐semiconductor (CMOS) technology, silicon photonics has facilitated the seamless and monolithic integration of diverse functionalities, including optical sources, modulators, and photodetectors. Microresonators can generate multiple coherent optical frequency comb lines and serve as optical sources. However, at the telecom band, silicon suffers from two‐photon absorption and free‐carrier absorption, which severely hampers the realization of microcombs from a single silicon chip at telecom wavelengths until now. In this paper, a novel approach is presented and demonstrated with near‐infrared dual‐band frequency combs from a multimode silicon resonator. With a single pumping configuration, dual‐band combs are generated from the interaction between the pump and Raman Stokes fields by involving two different optical mode families but with similar group velocities. It is observed that the pump power required to generate dual‐band combs is as low as 0.7 mW. The work in bringing telecom microcombs to the silicon platform will advance silicon photonics for the next generation of monolithically integrated technology based on a single silicon chip, enabling new possibilities for further exploring silicon photonics‐based applications in optical telecommunications, sensing, and quantum metrology in the telecom band using a monolithic single silicon chip.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"37 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
3D Nanolithography via Holographic Multi-Focus Metalens
In article number 2400181, Xinger Wang, Hui Gao, Wei Xiong, and co-workers propose a metasurface-based two-photon polymerization technique. A metasurface is introduced into 3D nanolithography for the first time, resulting in the construction of a miniaturized and simplified two-photon lithography system that achieves efficient multi-focus parallel processing with high uniformity. It is believed that the utilization of the metasurface will provide a novel two-photon lithography operating platform, enabling richer and more flexible printing functionalities while maintaining system miniaturization and low cost.
{"title":"3D Nanolithography via Holographic Multi-Focus Metalens (Laser Photonics Rev. 18(11)/2024)","authors":"Xinger Wang, Xuhao Fan, Yuncheng Liu, Ke Xu, Yining Zhou, Zexu Zhang, Fayu Chen, Xuan Yu, Leimin Deng, Hui Gao, Wei Xiong","doi":"10.1002/lpor.202470065","DOIUrl":"10.1002/lpor.202470065","url":null,"abstract":"<p><b>3D Nanolithography via Holographic Multi-Focus Metalens</b></p><p>In article number 2400181, Xinger Wang, Hui Gao, Wei Xiong, and co-workers propose a metasurface-based two-photon polymerization technique. A metasurface is introduced into 3D nanolithography for the first time, resulting in the construction of a miniaturized and simplified two-photon lithography system that achieves efficient multi-focus parallel processing with high uniformity. It is believed that the utilization of the metasurface will provide a novel two-photon lithography operating platform, enabling richer and more flexible printing functionalities while maintaining system miniaturization and low cost.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"18 11","pages":""},"PeriodicalIF":9.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.202470065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Transport-of-Intensity Diffraction Tomography with Bi-Plane Parallel Detection
In article number 2400387, Ning Zhou, Peng Gao, Qian Chen, Chao Zuo, and co-workers propose a novel high-speed, high-resolution 3D label-free microscopy technique named BP-TIDT, which integrates a bi-plane detection scheme (BP) with the transport-of-intensity diffraction tomography (TIDT). BP-TIDT effectively circumvents the need for matched illumination conditions under high numerical aperture (NA) conditions, enabling high-resolution label-free 3D imaging of live cells at an unprecedented speed of 15 volumes per second.
{"title":"High-Speed High-Resolution Transport of Intensity Diffraction Tomography with Bi-Plane Parallel Detection (Laser Photonics Rev. 18(11)/2024)","authors":"Ning Zhou, Runnan Zhang, Weisheng Xu, Ruizhi Zhu, Hanci Tang, Xiao Zhou, Jiasong Sun, Peng Gao, Qian Chen, Chao Zuo","doi":"10.1002/lpor.202470063","DOIUrl":"10.1002/lpor.202470063","url":null,"abstract":"<p><b>Transport-of-Intensity Diffraction Tomography with Bi-Plane Parallel Detection</b></p><p>In article number 2400387, Ning Zhou, Peng Gao, Qian Chen, Chao Zuo, and co-workers propose a novel high-speed, high-resolution 3D label-free microscopy technique named BP-TIDT, which integrates a bi-plane detection scheme (BP) with the transport-of-intensity diffraction tomography (TIDT). BP-TIDT effectively circumvents the need for matched illumination conditions under high numerical aperture (NA) conditions, enabling high-resolution label-free 3D imaging of live cells at an unprecedented speed of 15 volumes per second.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"18 11","pages":""},"PeriodicalIF":9.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.202470063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In article number 2400788, Zhi Cheng, Jiaqi Zhou, Yan Feng, and co-workers propose a novel method for generating femtosecond laser pulses with both repetition-rate and wavelength agility through a gain-switched diode pumped Raman fiber amplifier. This approach offers advantages in terms of simplicity, efficiency, and wavelength agility, which could be a promising light source for applications such as nonlinear microscopy and micromachining.
{"title":"Repetition-Rate and Wavelength Flexible Femtosecond Laser Pulse Generation (Laser Photonics Rev. 18(11)/2024)","authors":"Zhi Cheng, Jiaqi Zhou, Xinru Cao, Shuzhen Cui, Huawei Jiang, Yan Feng","doi":"10.1002/lpor.202470069","DOIUrl":"10.1002/lpor.202470069","url":null,"abstract":"<p><b>Femtosecond Laser Pulse Generation</b></p><p>In article number 2400788, Zhi Cheng, Jiaqi Zhou, Yan Feng, and co-workers propose a novel method for generating femtosecond laser pulses with both repetition-rate and wavelength agility through a gain-switched diode pumped Raman fiber amplifier. This approach offers advantages in terms of simplicity, efficiency, and wavelength agility, which could be a promising light source for applications such as nonlinear microscopy and micromachining.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"18 11","pages":""},"PeriodicalIF":9.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.202470069","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xianglin Ye, Xiangyu Jiang, Yingjie Zhou, Dongliang Tang, Fan Fan, Shuangchun Wen
Liquid crystal (LC) planar optics have advanced wavefront engineering toward ultrathin designs, capturing widespread attention. However, most wavefront control in LC planar optics remains constrained to freespace due to limitations in the precision of freely controllable units. Here, LC on‐chip wavefront engineering is proposed and confirmed. By controlling the initial azimuth angle of the polarization grating, the initial phase can be engineered, as theoretically predicted by rigorous coupled‐wave analysis. Experimentally, the initial azimuth angle of a polarization volume hologram grating, used as a waveguide coupler, is ingeniously modulated using a holographic template. Consequently, several on‐chip optical elements, including lenses, vortex beam generators, and holograms, are demonstrated. Furthermore, exit pupil expansion and multiexposure technologies are adopted to enhance off‐chip functionality and enable multifunctional, highly integrated LC on‐chip photonic systems. The proposed LC on‐chip wavefront engineering may find applications in freeform optics, near‐eye displays, LIDAR, and integrated photonic systems.
{"title":"Polarization Volume Hologram for On‐Chip Wavefront Engineering","authors":"Xianglin Ye, Xiangyu Jiang, Yingjie Zhou, Dongliang Tang, Fan Fan, Shuangchun Wen","doi":"10.1002/lpor.202401460","DOIUrl":"https://doi.org/10.1002/lpor.202401460","url":null,"abstract":"Liquid crystal (LC) planar optics have advanced wavefront engineering toward ultrathin designs, capturing widespread attention. However, most wavefront control in LC planar optics remains constrained to freespace due to limitations in the precision of freely controllable units. Here, LC on‐chip wavefront engineering is proposed and confirmed. By controlling the initial azimuth angle of the polarization grating, the initial phase can be engineered, as theoretically predicted by rigorous coupled‐wave analysis. Experimentally, the initial azimuth angle of a polarization volume hologram grating, used as a waveguide coupler, is ingeniously modulated using a holographic template. Consequently, several on‐chip optical elements, including lenses, vortex beam generators, and holograms, are demonstrated. Furthermore, exit pupil expansion and multiexposure technologies are adopted to enhance off‐chip functionality and enable multifunctional, highly integrated LC on‐chip photonic systems. The proposed LC on‐chip wavefront engineering may find applications in freeform optics, near‐eye displays, LIDAR, and integrated photonic systems.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"37 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Flexible scintillators with high light yield, spatial resolution and low light scattering are ideal for X‐ray imaging application. However, conventional scintillators are always prepared by crystallization of functional layer, grinding and mixing with polymers, resulting in serious light scattering. Herein, an in situ fabrication strategy is proposed to prepare a low light scattering flexible scintillator film based on 0D antimony halide C38H36P2SbCl5 (MTP2SbCl5). The prepared scintillator film exhibits bright yellow emission with an outstanding photoluminescence quantum yield (PLQY) of 99.69%, and it demonstrates linear responsiveness to X‐ray dose, achieving an impressive light yield of 39800 photons MeV−1 and a low detection limitation of 78.4 nGyair s−1. The scintillator film possesses strong radiation hardness and stability. In addition, low light scattering greatly inhibits optical crosstalk during X‐ray detection, effectively improving the spatial resolution of MTP2SbCl5 film from 4.5 to 10.2 lp mm−1. On account of the simple preparation method and high performance, this work provides guidance for the preparation of high‐efficiency, large‐area, low‐scattering and high‐resolution flexible scintillator in the future.
柔性闪烁体具有高出光率、高空间分辨率和低光散射的特点，是 X 射线成像应用的理想选择。然而，传统闪烁体的制备通常需要对功能层进行结晶、研磨并与聚合物混合，从而导致严重的光散射。本文提出了一种基于 0D 卤化锑 C38H36P2SbCl5（MTP2SbCl5）的低光散射柔性闪烁体薄膜的原位制备策略。所制备的闪烁体薄膜发出明亮的黄色光，光致发光量子产率（PLQY）高达 99.69%，并且对 X 射线剂量具有线性响应性，光产率高达 39800 光子 MeV-1，探测限制低至 78.4 nGyair s-1。闪烁体薄膜具有很强的辐射硬度和稳定性。此外，低光散射大大抑制了 X 射线探测过程中的光学串扰，有效地将 MTP2SbCl5 薄膜的空间分辨率从 4.5 lp mm-1 提高到 10.2 lp mm-1。该研究成果制备方法简单、性能优异，为今后制备高效、大面积、低散射、高分辨率的柔性闪烁体提供了指导。
{"title":"Highly Efficient Flexible Antimony Halide Scintillator Films with In Situ Preparation for High‐Resolution X‐Ray Imaging","authors":"Haixing Meng, Ying Li, Ying Wang, Minqi Zhu, Jiawen Xiao, Guozhen Shen","doi":"10.1002/lpor.202401703","DOIUrl":"https://doi.org/10.1002/lpor.202401703","url":null,"abstract":"Flexible scintillators with high light yield, spatial resolution and low light scattering are ideal for X‐ray imaging application. However, conventional scintillators are always prepared by crystallization of functional layer, grinding and mixing with polymers, resulting in serious light scattering. Herein, an in situ fabrication strategy is proposed to prepare a low light scattering flexible scintillator film based on 0D antimony halide C<jats:sub>38</jats:sub>H<jats:sub>36</jats:sub>P<jats:sub>2</jats:sub>SbCl<jats:sub>5</jats:sub> (MTP<jats:sub>2</jats:sub>SbCl<jats:sub>5</jats:sub>). The prepared scintillator film exhibits bright yellow emission with an outstanding photoluminescence quantum yield (PLQY) of 99.69%, and it demonstrates linear responsiveness to X‐ray dose, achieving an impressive light yield of 39800 photons MeV<jats:sup>−1</jats:sup> and a low detection limitation of 78.4 nGy<jats:sub>air</jats:sub> s<jats:sup>−1</jats:sup>. The scintillator film possesses strong radiation hardness and stability. In addition, low light scattering greatly inhibits optical crosstalk during X‐ray detection, effectively improving the spatial resolution of MTP<jats:sub>2</jats:sub>SbCl<jats:sub>5</jats:sub> film from 4.5 to 10.2 lp mm<jats:sup>−1</jats:sup>. On account of the simple preparation method and high performance, this work provides guidance for the preparation of high‐efficiency, large‐area, low‐scattering and high‐resolution flexible scintillator in the future.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"30 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hemeng Xue, Mingtao Shang, Ze Zhang, Hongfei Yu, Jinchao Liang, Meiling Guan, Chengming Sun, Huahua Wang, Shufeng Wang, Zhengyu Ye, Feng Gao, Lu Gao
The transition from optical film to digital image sensors (DIS) in imaging systems has brought great convenience to human life. However, the sampling resolution of DIS is considerably lower than that of optical film due to the limitation that the pixels are significantly larger than the silver halide molecules. How to break DIS's sampling limit and achieve high‐resolution imaging is highly desired for imaging applications. In the research, a novel mechanism that allows for a significant reduction in the smallest sampling unit of DIS to as small as 1/16th of a pixel, or even smaller, through measuring the intra‐pixel quantum efficiency for the first time and recomputing the image — a technique referred to as hyper‐sampling imaging (HSI) is developed. Employing the HSI method, the physical sampling resolution of regular DIS can be enhanced by 4 × 4 times or potentially higher, and detailed object information can be acquired. The HSI method has undergone rigorous testing in real‐world imaging scenarios, demonstrating its robustness and efficiency in overcoming the sampling constraints of conventional DIS. This advancement is particularly beneficial for applications such as remote sensing, long‐range reconnaissance, and astronomical observations, where the ability to capture fine details is paramount.
{"title":"Hyper‐Sampling Imaging by Measurement of Intra‐Pixel Quantum Efficiency Using Steady Wave Field","authors":"Hemeng Xue, Mingtao Shang, Ze Zhang, Hongfei Yu, Jinchao Liang, Meiling Guan, Chengming Sun, Huahua Wang, Shufeng Wang, Zhengyu Ye, Feng Gao, Lu Gao","doi":"10.1002/lpor.202401306","DOIUrl":"https://doi.org/10.1002/lpor.202401306","url":null,"abstract":"The transition from optical film to digital image sensors (DIS) in imaging systems has brought great convenience to human life. However, the sampling resolution of DIS is considerably lower than that of optical film due to the limitation that the pixels are significantly larger than the silver halide molecules. How to break DIS's sampling limit and achieve high‐resolution imaging is highly desired for imaging applications. In the research, a novel mechanism that allows for a significant reduction in the smallest sampling unit of DIS to as small as 1/16th of a pixel, or even smaller, through measuring the intra‐pixel quantum efficiency for the first time and recomputing the image — a technique referred to as hyper‐sampling imaging (HSI) is developed. Employing the HSI method, the physical sampling resolution of regular DIS can be enhanced by 4 × 4 times or potentially higher, and detailed object information can be acquired. The HSI method has undergone rigorous testing in real‐world imaging scenarios, demonstrating its robustness and efficiency in overcoming the sampling constraints of conventional DIS. This advancement is particularly beneficial for applications such as remote sensing, long‐range reconnaissance, and astronomical observations, where the ability to capture fine details is paramount.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"69 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jianhua Xiao, Yang Wang, Jiaao Wu, Liu Yuan, Huiling Tai, Yadong Jiang
Tremendous research efforts are developed to suppress the reverse dark current (Jd) and enhance the responsivity of organic photodiodes (OPDs). The functional layers of traditional OPDs usually follow the principle of energy level alignment to make unobstructed photo‐carriers transport under reverse bias, but this inevitably leads to a large forward Jd. Herein, a universal strategy is proposed to manipulate the carrier dynamics and effectively suppress the forward Jd of OPDs, that is, tuning the energy level and electron traps of the anode interface layers (AILs). The bandgap and electron traps of typical organometallic chelate AIL (PEIE‐Co) can be well controlled by adjusting the component ratio of PEIE and metal ions. The wide bandgap increases the carrier injection barrier under reverse and forward bias, endowing OPD with a much lower Jd; the electron traps induce hole tunneling injection by capturing photo‐generated electrons under forward bias, thereby enabling the photomultiplication effect. The obtained OPD exhibits photoconductive/photomultiplication working mode at reverse/forward bias and the specific detectivity approaches ≈1013/1012 Jones, showing promise for adaptively detecting faint and strong light. This study presents an intelligent strategy to achieve dual‐mode OPDs, paving the way for the multifunctional development of photodetectors.
{"title":"Suppressing the Dark Current Under Forward Bias for Dual‐Mode Organic Photodiodes","authors":"Jianhua Xiao, Yang Wang, Jiaao Wu, Liu Yuan, Huiling Tai, Yadong Jiang","doi":"10.1002/lpor.202400920","DOIUrl":"https://doi.org/10.1002/lpor.202400920","url":null,"abstract":"Tremendous research efforts are developed to suppress the reverse dark current (<jats:italic>J<jats:sub>d</jats:sub></jats:italic>) and enhance the responsivity of organic photodiodes (OPDs). The functional layers of traditional OPDs usually follow the principle of energy level alignment to make unobstructed photo‐carriers transport under reverse bias, but this inevitably leads to a large forward <jats:italic>J<jats:sub>d</jats:sub></jats:italic>. Herein, a universal strategy is proposed to manipulate the carrier dynamics and effectively suppress the forward <jats:italic>J<jats:sub>d</jats:sub></jats:italic> of OPDs, that is, tuning the energy level and electron traps of the anode interface layers (AILs). The bandgap and electron traps of typical organometallic chelate AIL (PEIE‐Co) can be well controlled by adjusting the component ratio of PEIE and metal ions. The wide bandgap increases the carrier injection barrier under reverse and forward bias, endowing OPD with a much lower <jats:italic>J<jats:sub>d</jats:sub></jats:italic>; the electron traps induce hole tunneling injection by capturing photo‐generated electrons under forward bias, thereby enabling the photomultiplication effect. The obtained OPD exhibits photoconductive/photomultiplication working mode at reverse/forward bias and the specific detectivity approaches ≈10<jats:sup>13</jats:sup>/10<jats:sup>12</jats:sup> Jones, showing promise for adaptively detecting faint and strong light. This study presents an intelligent strategy to achieve dual‐mode OPDs, paving the way for the multifunctional development of photodetectors.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"19 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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