Results 91 to 100 of about 1,852 (195)

High-Speed, UV-NIR Dual-Band Photodetection via a 2H-MoSe₂/Si/1T-WS₂ Bipolar Heterojunction

Sensors
Ultraviolet (UV) and near-infrared (NIR) dual-band photodetection is critical for applications ranging from secure optical communication and environmental monitoring to biomedical imaging.
Zihao Wang, Meiping Tan, Lan Wang, Yan Xu, Yongqiang Yu   +4 more
doaj   +1 more source

Reciprocal Asymmetric Transmission in Directionally Metallized Silica Nanogratings With Broken Lateral Mirror Symmetry

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
Directional silver coating breaks lateral mirror symmetry in a reciprocal silica nanograting. Opposite in‐plane illumination directions redistribute optical power differently among diffraction and absorption channels, producing strong polarization‐preserving lateral transmission contrast.
Ye Ming Qing, Yi Shen, Shunsuke Murai, Katsuhisa Tanaka, Koichi Okamoto   +4 more
wiley   +1 more source

Selective Growth of Bulk‐Like Perovskite in Plasmonic Nanoholes for Enhanced Two‐Photon‐Excited Emission

Advanced Materials, Volume 38, Issue 45, 13 August 2026.
Vacuum‐assisted capillary infiltration delivers perovskite precursors deep into gold nanohole plasmonic hotspots, enabling uniform in situ crystallization of bulk‐like CsPbBr3 within confined cavities. Verified by peel‐off and structural analyses, the hybrid platform shows simulated |E/E₀| ≈2.80 at 800 nm and ∼40‐fold two‐photon absorption‐enhanced ...
Jung‐Jae Do, Bryan K. Chantigian, Daniel Upcraft, Wonwoo Lee, Ho‐Sung Shin, Nathan C. Lindquist, Jae Woong Jung, Bharat Jalan, Sang‐Hyun Oh   +8 more
wiley   +1 more source

Mie-mediated edge-enhanced Raman scattering of vertically-stacking ge quantum-dots/Si-SiN array for enhancing photoluminescence and photodetection

Scientific Reports
We reported vertically-stacking architecture of Si-Si3N4 embedded Ge quantum dots (QDs) array for quantum nanophotonics. Salient features of ordered, stacking Ge QDs lie in good control over the QD size, spherical-shape, and spatial location without ...
Shih-Hsiang Yang, Maria Isabel Alonso, Horng-Chih Lin, Pei-Wen Li   +3 more
doaj   +1 more source

Observation of Excitonic Instability in a Monolayer Ta2NiSe5 With Strain Disorder

Advanced Science, Volume 13, Issue 43, 3 August 2026.
Monolayer Ta2${\rm Ta}_2$NiSe5${\rm NiSe}_5$ sustains an excitonic insulating phase up to 190 K, with Raman signatures of gap opening and critical excitonic fluctuations. Thickness‐independent large gap ratios highlight strong exciton‐phonon coupling, while substrate‐induced strain disorder depresses Tc, establishing monolayer Ta2${\rm Ta}_2$NiSe5${\rm
So Young Kim, Kwangrae Kim, Dowook Kim, Ji Eun Lee, Jieun Seok, Chang Il Kwon, Jo Hyun Yun, Chang‐Jong Kang, Jae Hoon Kim, H. W. Yeom, Tae‐Hwan Kim, Jonghwan Kim, B. J. Kim, Jun Sung Kim   +13 more
wiley   +1 more source

Large area MoSe2 and MoSe2/Bi2Se3 films on sapphire (0001) for near-infrared photodetection

Nano Express
The fabrication of heterojunction-based photodetectors (PDs) is well known for the enhancement of PDs performances, tunable nature of photoconductivity, and broadband application.
Rahul Kumar, Vishnu Aggarwal, Sudhanshu Gautam, Aditya Yadav, Bheem Singh, Ramakrishnan Ganesan, Govind Gupta, Sunil Singh Kushvaha   +7 more
doaj   +1 more source

Dielectric‐Confinement‐Induced in‐Plane Photoelectric Anisotropy in Isotropic Quasi‐1D γ‐GaS Nanoribbon

Advanced Science, Volume 13, Issue 45, 13 August 2026.
We investigate the geometry‐governed optoelectronic anisotropy arising from dielectric confinement in quasi‐1D γ‐GaS nanoribbons with intrinsically isotropic atomic structures. Dielectric mismatch between the nanoribbon and its surroundings leads to a general polarization‐dependent photoresponse during near‐field scattering.
Jiawei Jing, Jiamei Chen, Xing Xin, Peisong Peng, Zhihao Wu, Weiheng Zhong, Hanyu Zhang, Wanfu Shen, Jihua Zhang, Yuwei Shan, Yuanzheng Li, Xingang Zhao, Wei Xin, Fang Wang, Weida Hu, Haiyang Xu, Yichun Liu   +16 more
wiley   +1 more source

Imidazole‐Extended Non‐Fullerene Acceptors With Tunable Crystallinity for Ultrasensitive, Ultrafast Near‐Infrared Organic Photodetectors

Aggregate, Volume 7, Issue 8, August 2026.
A two‐dimensional extended imidazole acceptor‐based organic photodetector delivers a lower dark current of 2.54 × 10−12 A/cm−2, peak detectivity of 1.08 × 1013 Jones, the widest linear dynamic range of 167.8 dB, and ultrafast response times of 307/319 ns. ABSTRACT Emerging optoelectronic tasks such as night‐vision imaging and wearable health monitoring
Chengwei Shan, Zihao Li, Han Gao, Yuang Fu, Zhaojin Wang, Xinhui Lu, Xianyong Zhou, Bin‐Bin Yu, Philip C. Y. Chow, Aung Ko Ko Kyaw, Chang Liu, Tianshuo Zhao, Hanjian Lai   +12 more
wiley   +1 more source

Organic Photodetectors and Sensors for Low‐Light and Infrared Applications

Electron, Volume 4, Issue 3, August 2026.
This mini review highlights recent advances in organic photodetectors and sensors for low‐light and infrared applications, emphasizing molecular design, device architectures, and interface engineering that improve charge transport, detectivity, speed, and spectral selectivity.
Swarup Biswas, Hyeok Kim
wiley   +1 more source

Huge upconversion luminescence enhancement by a cascade optical field modulation strategy facilitating selective multispectral narrow-band near-infrared photodetection. [PDF]

Light Sci Appl, 2020
Ji Y, Xu W, Ding N, Yang H, Song H, Liu Q, Ågren H, Widengren J, Liu H.   +8 more
europepmc   +1 more source