Results 61 to 70 of about 7,192 (202)

Photon Avalanching Nanoparticles: The Next Generation of Upconverting Nanomaterials?

Advanced Functional Materials, EarlyView.
This Perspective outlines the mechanistic foundations that enable photon‐avalanche (PA) behavior in lanthanide nanomaterials and contrasts them with emerging application spaces and forward‐looking design strategies. By bridging threshold engineering, energy‐transfer dynamics, and materials engineering, we provide a coherent roadmap for advancing the ...
Kimoon Lee, Yunseo Kim, Hyeong‐ku Jo, Dongjoon Yoon, Byeonghyeok Im, WonJeong Yu, Eui‐Rim On, Changhwan Lee   +7 more
wiley   +1 more source

Recent Progress in Lanthanide-Doped Inorganic Perovskite Nanocrystals and Nanoheterostructures: A Future Vision of Bioimaging

Nanomaterials, 2022
All-inorganic lead halide perovskite nanocrystals have great potential in optoelectronics and photovoltaics. However, their biological applications have not been explored much owing to their poor stability and shallow penetration depth of ultraviolet (UV)
Gowri Manohari Arumugam, Santhosh Kumar Karunakaran, Raquel E. Galian, Julia Pérez-Prieto   +3 more
doaj   +1 more source

Phonon-assisted upconversion photoluminescence of monolayer MoS₂ at elevated temperatures

Optics Express, 2023
Upconversion photoluminescence (UPL) lies at the heart of optical refrigeration and energy harvesting. Monolayer transition metal dichalcogenides (TMDCs) have been identified as an excellent platform with robust phonon-exciton coupling for studying the phonon-assisted UPL process.
Fengkai Meng, Xiaodong Yang, Jie Gao
openaire   +2 more sources

Charge Transfer States in Donor–Acceptor Bulk‐Heterojunctions as Triplet–Triplet Annihilation Sensitizer for Solid‐State Photon Upconversion

Advanced Materials Interfaces, EarlyView.
A near‐infrared photosensitizer that facilitates efficient solid‐state photon upconversion by recycling triplets formed within a fullerene‐based donor–acceptor bulk‐heterojunction system is demonstrated. Spectroscopic investigations reveal that the energy of photogenerated charge transfer states of triplet character (3CT) is subsequently transferred to
Maciej Klein, Alexander R. Ireland, Evan G. Moore, Dennis Delic, Ajay K. Pandey   +4 more
wiley   +1 more source

Active Shell Engineering for Efficient Cascade Triplet Energy Transfer in Lanthanide Heterostructures

Angewandte Chemie, Volume 138, Issue 14, 27 March 2026.
Active shell engineering resolves the trade‐off between surface passivation and molecular sensitization in lanthanide nanoparticles. NaYbF4@Ca0.8F2:Nd0.2@ACA heterostructures transform inert shells into energy conduits, enabling cascade triplet transfer with near‐unity efficiency.
Zhao Jiang, Alasdair Tew, Xinjuan Li, Huangtianzhi Zhu, Yunzhou Deng, Caterina Ducati, Zhongzheng Yu, Akshay Rao   +7 more
wiley   +2 more sources

Ligand enhanced upconversion of near-infrared photons with nanocrystal light absorbers. [PDF]

, 2016
We designed and synthesized a tetracene derivative 4-(tetracen-5-yl)benzoic acid (CPT) as a transmitter ligand used in PbS/PbSe nanocrystal (NC) sensitized upconversion of near infrared (NIR) photons.
Huang, Zhiyuan, Li, Xin, Mahboub, Melika, Simpson, Duane E, Tang, Ming L   +4 more
core   +1 more source

TADF‐Emitting Dendrimers for Scalable Bar‐Coating Fabrication of Light‐Emitting Electrochemical Cells

Advanced Materials Technologies, EarlyView.
TADF‐emitting dendrimers promise to enable scalable solution‐based fabrication of efficient electroluminescent devices by the virtue of an attractive set of properties. Here, we report on how light‐emitting electrochemical cells, comprising the TADF‐dendrimer tBuCz2m2pTRZ, can be fabricated by scalable bar‐coating under ambient air and deliver uniform ...
Shi Tang, Dianming Sun, Christian Larsen, Erik Zäll, Eli Zysman‐Colman, Ludvig Edman   +5 more
wiley   +1 more source

Hydrothermal Synthesis and Properties of Yb³⁺/Tm³⁺ Doped Sr₂LaF₇ Upconversion Nanoparticles

Nanomaterials, 2022
We report the procedure for hydrothermal synthesis of ultrasmall Yb3+/Tm3+ co-doped Sr2LaF7 (SLF) upconversion phosphors. These phosphors were synthesized by varying the concentrations of Yb3+ (x = 10, 15, 20, and 25 mol%) and Tm3+ (y = 0.75, 1, 2, and 3
Bojana Milićević, Jovana Periša, Zoran Ristić, Katarina Milenković, Željka Antić, Krisjanis Smits, Meldra Kemere, Kaspars Vitols, Anatolijs Sarakovskis, Miroslav D. Dramićanin   +9 more
doaj   +1 more source

Enhancement of two photon processes in quantum dots embedded in subwavelength metallic gratings

, 2010
We show a large enhancement of two-photon absorption processes in nanocrystal quantum dots and of light upconversion efficiency from the IR to the near-IR spectral regime, using a hybrid optical device in which near-IR emitting InAs quantum dots were ...
Adiel Zimran, Aouani, Barbara, Cao, Chen, Conibeer, Dancus, Ebbesen, Gang Chen, Gao, Gao, Garcia-Vidal, Guillaumée, Hideaki, Huffaker, Ilai Schwarz, Klimov, Kulakovich, Larson, Lee, Lin, Lu, Michalet, Michler, Moreno, Moshe G. Harats, Nozik, Padilha, Poitras, Porto, Pu, Ronen Rapaport, Santori, Shen, Treacy, Uri Banin, Verhagen, Wurtz, Xingsheng, Yingli   +39 more
core   +1 more source

Space Group Modulated Upconversion and Mechanoluminescence in [YbEu] Cocrystal Complexes

Advanced Optical Materials, EarlyView.
We report here a space group regulation strategy to optimize both upconversion and mechanoluminescence in cocrystal assemblies, representing the first example of integrating these two properties within a single lanthanide complex material. ABSTRACT Lanthanide complexes exhibiting stimuli‐responsive luminescence, such as upconversion (UC) and ...
Wei Sun, Qi'an Zhang, Peng Fan, Fan Yin, Chong‐Bin Tian, Ke‐Han Tang, Xiao‐Qing Guo, Xiao‐Fang Duan, Dengfeng Peng, Qing‐Fu Sun   +9 more
wiley   +1 more source