Results 61 to 70 of about 3,703 (147)

Multifunctional photon conversion materials for enhancing silicon solar cells

Light: Science & Applications
A type of multifunctional erbium (Er3+) and ytterbium (Yb3+) codoped NaY(WO4)2 phosphors, with simultaneous photon upconversion, photon quantum cutting, and luminescence ratiometric temperature sensing abilities, have been developed, opening up new ...
Yiyan Zhang, Guanying Chen
doaj   +1 more source

Au42(PET)32 Nanocluster Sensitizer Unlocks the Annihilator Potential of Rubrene, Enabling High‐Performance NIR‐to‐Visible Photon Upconversion

Angewandte Chemie, Volume 138, Issue 13, 23 March 2026.
A needle‐shaped gold nanocluster, Au42(PET)32, serves as a powerful triplet sensitizer, enabling rubrene to fully express its intrinsic annihilator capability (spin statistical factor f = 0.58). This sensitizer–annihilator pair achieves record‐high upconversion internal quantum yields of 21.4% (808 nm excitation) and 15.0% (936 nm excitation ...
Masaaki Mitsui, Shinjiro Takano, Tatsuya Tsukuda   +2 more
wiley   +1 more source

Experimental demonstration of photon upconversion via cooperative energy pooling

Nature Communications, 2017
Photon upconversion methods demonstrated thus far involve challenging requirements. Here Weingartenet al. demonstrate a mechanism called cooperative energy pooling, in which multiple photoexcited sensitizers resonantly and simultaneously transfer their ...
Daniel H. Weingarten, Michael D. LaCount, Jao van de Lagemaat, Garry Rumbles, Mark T. Lusk, Sean E. Shaheen   +5 more
doaj   +1 more source

Photon Upconversion Strategies for Enhancing Efficiency in Photovoltaic Devices: Mechanisms and Materials Review [PDF]

EPJ Web of Conferences
Photovoltaic devices transform sunlight into electrical power, offering a plentiful and eco-friendly solution to meet global energy demands. Yet, their performance remains limited by the loss of sub-bandgap photons that pass through without absorption ...
Ghawade Sonal P., Pustode Roshan. P., Kautkar Pranay R.   +2 more
doaj   +1 more source

Spatiotemporal control of photochromic upconversion through interfacial energy transfer

Nature Communications
Dynamic control of multi-photon upconversion with rich and tunable emission colors is stimulating extensive interest in both fundamental research and frontier applications of lanthanide based materials.
Long Yan, Jinshu Huang, Zhengce An, Qinyuan Zhang, Bo Zhou   +4 more
doaj   +1 more source

Upconversion 32Nb2O5–10La2O3–16ZrO2 glass activated with Er3+/Yb3+ and dye sensitized solar cell application

Journal of Advanced Ceramics, 2017
Er3+/Yb3+ codoped niobium pentoxide glasses were fabricated by the aerodynamic levitation (ADL) method with rapid cooling rate. All samples with various doping concentrations showed good upconversion luminescence properties under 980 nm laser excitation.
Xiaoyu Lia, Jiaying Li, Jianqiang Li, Hong Lin, Bo Li   +4 more
doaj   +1 more source

Merging van der Waals Materials and Optical Metasurfaces for Cavity Quantum Electrodynamics

Nanophotonics, Volume 15, Issue 5, 16 March 2026.
Flat optical metasurfaces supporting quasi‐bound states in the continuum (qBIC) enable cavity‐like, high‐Q resonances in ultrathin nanostructures. This perspective explores the emergence of cavity quantum electrodynamics in qBIC metasurfaces, specifically those made from ultrathin van der Waals nanostructures, where cavities and emitters are seamlessly
Luca Sortino, Andreas Tittl, Stefan A. Maier   +2 more
wiley   +1 more source

Biaxial strain tuned upconversion photoluminescence of monolayer WS2

Scientific Reports
Monolayer tungsten disulfide (1L-WS2) is a direct bandgap atomic-layered semiconductor material with strain tunable optical and optoelectronic properties among the monolayer transition metal dichalcogenides (1L-TMDs).
Shrawan Roy, Xiaodong Yang, Jie Gao
doaj   +1 more source

Photonic Engineering Enables All‐Passive Upconversion Imaging with Low‐Intensity Near‐Infrared Light

Advanced Functional Materials, Volume 36, Issue 23, 19 March 2026.
A passive upconversion imaging system enables the observation of scenes illuminated by low‐intensity incoherent near‐infrared light from 750 to 930 nm, by converting it into the visible without the use of external power. The upconverter is enabled by triplet–triplet annihilation in a bulk heterojunction, with absorption enhanced by plasmonic resonators
Rabeeya Hamid, Demeng Feng, Pournima Narayanan, Justin S. Edwards, Manchen Hu, Emma Belliveau, Minjeong Kim, Shenwei Yin, Sanket Deshpande, Chenghao Wan, Linda Pucurimay, David A. Czaplewski, Daniel N. Congreve, Mikhail A. Kats   +13 more
wiley   +1 more source

The Transition of Luminescent Materials and Conductive Electrodes in Upconversion Devices to Flexible Architectures

Photonics
Flexible upconversion (UC) devices, owing to their unique combination of high–efficiency optical energy conversion and mechanical flexibility, have attracted increasing attention in the fields of optoelectronics, wearable devices, flexible displays, and ...
Huijuan Chen, Weibo Feng, Tianling Qin
doaj   +1 more source