Results 11 to 20 of about 7,192 (202)

Giant two-photon upconversion from 2D exciton in doubly-resonant plasmonic nanocavity [PDF]

Light: Science & Applications
Photon upconversion through high harmonic generation, multiphoton absorption, Auger recombination and phonon scattering performs a vital role in energy conversion and renormalization.
Fangxun Liu, Haiyi Liu, Cheng Chi, Wenqi Qian, Yuchen Dai, Guangyi Tao, Sihan Lin, Shihan Ding, Menghan Yu, Hongliang Liu, Lie Lin, Pengfei Qi, Zheyu Fang, Weiwei Liu   +13 more
doaj   +2 more sources

Tuning relaxation and nonlinear upconversion of valley-exciton-polaritons in a monolayer semiconductor [PDF]

Nature Communications
Controlling exciton relaxation and energy conversion pathways via their coupling to photonic modes is a central task in cavity-mediated quantum materials research. In this context, the light-matter hybridization in optical cavities can lead to intriguing
Hangyong Shan, Jamie M. Fitzgerald, Roberto Rosati, Gilbert Leibeling, Kenji Watanabe, Takashi Taniguchi, Seth Ariel Tongay, Falk Eilenberger, Martin Esmann, Sven Höfling, Ermin Malic, Christian Schneider   +11 more
doaj   +2 more sources

Activation of Perovskite Nanocrystals for Volumetric Displays Using Near-Infrared Photon Upconversion by Triplet Fusion [PDF]

Molecules
Coupling organic light-harvesting materials with lead halide perovskite quantum dots (LHP QDs) is an attractive approach that could provide great potential in optoelectronic applications owing to the diversity of organic materials available and the ...
Yu Hu, Guiwen Luo, Pengfei Niu, Ling Zhang, Tianjun Yu, Jinping Chen, Yi Li, Yi Zeng   +7 more
doaj   +2 more sources

Aminal-linked Covalent Organic Frameworks for Light Energy Upconversion. [PDF]

Angew Chem Int Ed Engl
Aminal‐linked covalent organic frameworks incorporating anthracene units are introduced as solid‐state platforms for triplet–triplet annihilation upconversion. The crystalline materials retain chromophore electronic properties and exhibit fluorescence quantum yields of up to 40%.
Brzeziński M, Tyszka-Gumkowska A, Gorski A, Potrzebowski MJ, Polczyk T, Wegner W, Gawinkowski S, Ostapko J.   +7 more
europepmc   +3 more sources

Phonon-assisted upconversion in twisted two-dimensional semiconductors

Light: Science & Applications, 2023
Rotation-angle-dependent phonon-assisted photon upconversion in twisted two-dimensional semiconductor is investigated. Lattice relaxation along with enhanced pump efficiency, lead to an inverted contrast between upconversion and conventional ...
Yuchen Dai, Pengfei Qi, Guangyi Tao, Guangjie Yao, Beibei Shi, Zhixin Liu, Zhengchang Liu, Xiao He, Pu Peng, Zhibo Dang, Liheng Zheng, Tianhao Zhang, Yongji Gong, Yan Guan, Kaihui Liu, Zheyu Fang   +15 more
doaj   +1 more source

Higher-Order Multiphoton Absorption Upconversion Lasing Based on ZnO/ZnMgO Multiple Quantum Wells

Nanomaterials, 2022
In the progress of nonlinear optics, multiphoton absorption (MPA) upconversion lasing enables many vital applications in bioimaging, three-dimensional optical data storage, and photodynamic therapy.
Shushu Ma, Haiyuan Wei, Hai Zhu, Francis Chi-Chung Ling, Xianghu Wang, Shichen Su   +5 more
doaj   +1 more source

Photoluminescence upconversion at GaAs/InGaP2 interfaces driven by a sequential two-photon absorption mechanism [PDF]

, 2016
This paper reports on the results of an investigation into the nature of photoluminescence upconversion at GaAs/InGaP2 interfaces. Using a dual-beam excitation experiment, we demonstrate that the upconversion in our sample proceeds via a sequential two-
Ekins-Daukes, NJ, Hess, O, Hinrichsen, TF, Hopkinson, M, Hylton, N, Phillips, CC, Pusch, A, Vaquero-Stainer, AR, Yoshida, M   +8 more
core   +4 more sources

Revealing the influence of steric bulk on the triplet–triplet annihilation upconversion performance of conjugated polymers

Scientific Reports, 2021
A series of poly(phenylene-vinylene)-based copolymers are synthesized using the Gilch method incorporating monomers with sterically bulky sidechains.
Riley O’shea, William J. Kendrick, Can Gao, Tze Cin Owyong, Jonathan M. White, Kenneth P. Ghiggino, Wallace W. H. Wong   +6 more
doaj   +1 more source

Fabrication and optical properties of Er2-xYbxZr2O7 transparent ceramics

Optical Materials: X, 2022
In this study, Er2-xYbxZr2O7 (x = 0–2.0) transparent ceramics were successfully prepared by vacuum sintering at 1850 °C for 6 h. The phase composition, microstructure evolution and optical properties of the as-prepared ceramics were investigated.
Lei Yu, Kuibao Zhang, Ting Deng, Baozhu Luo   +3 more
doaj   +1 more source

Fast wide-field upconversion luminescence lifetime thermometry enabled by single-shot compressed ultrahigh-speed imaging

Nature Communications, 2021
Photoluminescence lifetime imaging of upconverting nanoparticles is useful for optical thermometry, but is limited for dynamic samples. Here, the authors present a wide-field and single shot approach based on compressive sensing, for video-rate ...
Xianglei Liu, Artiom Skripka, Yingming Lai, Cheng Jiang, Jingdan Liu, Fiorenzo Vetrone, Jinyang Liang   +6 more
doaj   +1 more source