Results 51 to 60 of about 3,703 (147)

DNA-mediated excitonic upconversion FRET switching

New Journal of Physics, 2015
Excitonics is a rapidly expanding field of nanophotonics in which the harvesting of photons, ensuing creation and transport of excitons via Förster resonant energy transfer (FRET), and subsequent charge separation or photon emission has led to the ...
Donald L Kellis, Sarah M Rehn, Brittany L Cannon, Paul H Davis, Elton Graugnard, Jeunghoon Lee, Bernard Yurke, William B Knowlton   +7 more
doaj   +1 more source

Photoluminescence Turn‐On Method to Determine the Kinetics of Thermally Activated Delayed Fluorescence Materials

Advanced Physics Research, EarlyView.
Thermally Activated Delayed Fluorescence (TADF) is widely exploited to achieve high‐efficiency OLEDs. TADF Emitters are normally investigated with transient photoluminescence (PL), which requires the PL to be detected over multiple orders of magnitude in time and intensity.
Stefan Diesing, Kou Yoshida, Eli Zysman‐Colman, Ifor D.W. Samuel   +3 more
wiley   +1 more source

Real‐time biosensing of Parkinson's disease biomarkers via NIR‐activated upconversion nanoparticles

BMEMat, EarlyView.
Schematic illustration of the luminescence resonance energy transfer‐driven core‐shell‐shell UCNPs (cssUCNPs@Fluo4) nanoprobe for simultaneous monitoring of Ca²⁺‐temperature dynamics in Parkinson's disease models. Abstract Parkinson's disease (PD) is a progressive neurodegenerative disorder with incompletely understood pathophysiology, necessitating ...
Jialin Liu, Nan Li, Yu Chen, Rui Pu, Wei Wei, Yunqi Lin, Lejing Li, Yao Lu, Jianhua Hao, Lihua Li   +9 more
wiley   +1 more source

Two-step photon up-conversion solar cells

Nature Communications, 2017
Harvesting incident photons with energy below the bandgap may lead to highly efficient solar cells. By introducing InAs quantum dots at the hetero-interface, Asahiet al. achieve efficient two step photon up-conversion resulting in additional photocurrent
Shigeo Asahi, Haruyuki Teranishi, Kazuki Kusaki, Toshiyuki Kaizu, Takashi Kita   +4 more
doaj   +1 more source

Programmable luminescent platform based on carbon quantum dots enables wavelength‐multiplexed optical data storage and encryption

FlexMat, EarlyView.
A carbon‐quantum‐dots (CQDs)‐based programmable luminescent platform is proposed for multidimensional optical information encryption and high‐capacity data storage by leveraging wavelength‐division multiplexing. Furthermore, a prototype tri‐layer optical disk is demonstrated, where data written via laser ablation on different CQD layers are retrieved ...
Honglei Sun, Qingfeng Gui, Yunsong Di, Zihan Ying, Siqi Liu, Mengqi Li, Meng Zhang, Lun Yang, Yushen Liu, Zhixing Gan   +9 more
wiley   +1 more source

Enhancing Solar Cell Efficiency Using Photon Upconversion Materials

Nanomaterials, 2015
Photovoltaic cells are able to convert sunlight into electricity, providing enough of the most abundant and cleanest energy to cover our energy needs. However, the efficiency of current photovoltaics is significantly impeded by the transmission loss of ...
Yunfei Shang, Shuwei Hao, Chunhui Yang, Guanying Chen   +3 more
doaj   +1 more source

Recent Advances in Photonic Bound States in the Continuum: From Fundamentals to Engineering and Implementation

Laser &Photonics Reviews, EarlyView.
This review summarizes recent progress in meta‐photonics with a focus on bound states in the continuum (BICs) as a powerful platform for light confinement and control. It covers fundamental concepts, design strategies across optical regimes, symmetry breaking for practical quasi‐BICs, tunable and AI‐assisted BIC devices, and emerging applications in ...
Hafiz Saad Khaliq, Hak‐Rin Kim
wiley   +1 more source

Photon upconversion tuning through energy migration in lanthanides sensitized nanoparticles

Nano Materials Science
Lanthanide-sensitized upconverting nanoparticles (UCNPs) are widely studied because of their unusual optical characteristics, such as large antenna-generated anti-Stokes shifts, high photostability, and narrow emission bandwidths, which can be harnessed ...
Xingwen Cheng, Jiangshan Luo, Federico Rosei   +2 more
doaj   +1 more source

Topology-driven energy transfer networks for upconversion stimulated emission depletion microscopy

Light: Science & Applications
Lanthanide-doped upconversion nanoparticles enable upconversion stimulated emission depletion microscopy with high photostability and low-intensity near-infrared continuous-wave lasers.
Weizhao Gu, Simone Lamon, Haoyi Yu, Qiming Zhang, Min Gu   +4 more
doaj   +1 more source

Uniaxial Strain Tuning of Upconversion Photoluminescence in Monolayer WSe2

Advanced Photonics Research
Strain engineering is one of the leading mechanical ways to tune the optical properties of monolayer transition metal dichalcogenides among different techniques.
Shrawan Roy, Xiaodong Yang, Jie Gao
doaj   +1 more source