Results 121 to 130 of about 22,469 (293)

Pr³⁺ Visible to Ultraviolet Upconversion for Antimicrobial Applications

Nanomaterials
This paper addresses the upconversion of blue light to ultraviolet-C (UVC) with Pr3+-activated materials for antibacterial applications of UVC. It discusses the processes through which UV radiation provides biocidal effects on microorganisms, along with ...
Miroslav D. Dramićanin, Mikhail G. Brik, Željka Antić, Radu Bănică, Cristina Mosoarca, Tatjana Dramićanin, Zoran Ristić, George Daniel Dima, Tom Förster, Markus Suta   +9 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

Optimized NaYF₄: Er³⁺/Yb³⁺ Upconversion Nanocomplexes via Oleic Acid for Biomedical Applications

Inorganics
This study presents the synthesis of NaYF4: Er3+/Yb3+ upconversion luminescent nanomaterials using a wet chemistry method. The role of oleic acid in influencing the size, shape, and luminescent properties of the materials was also investigated.
Ha Thi Phuong, Le Thi Vinh, Tong Quang Cong, Tran Quoc Tien, Nguyen Duc Van, Vu Thi Hong Ha, Vu Ngoc Phan, Le Thi Hoi, Pham Duc Thang, Do Thi Thao, Tran Thu Huong   +10 more
doaj   +1 more source

Upconversion of Rare Earth Nanomaterials

, 2015
Rare earth nanomaterials, which feature long-lived intermediate energy levels and intraconfigurational 4f-4f transitions, are promising supporters for photon upconversion.
Dong, Hao, Zhang, Pei-Zhi, Sun, Ling-Dong, Yan, Chun-Hua   +3 more
core   +1 more source

Spirobifluorene fusion in multiple resonance frameworks enables efficient pure‐red OLEDs with narrowband emission and suppressed efficiency roll‐off

FlexMat, EarlyView.
An orthogonal spirobifluorene‐fusion strategy is introduced for B/N/O‐alternated MR frameworks, enabling improved kRISC (5.46 × 103 s−1), high ΦPL (97%), and narrow‐band pure‐red emission. Vacuum‐evaporated OLEDs incorporating this emitter achieve an EQEmax >40% (FWHM = 36 nm) and exhibit exceptionally low efficiency roll‐off at high luminance ...
Yan‐Yun Jing, Han Wu, Xiaoling Xu, Sijie Xian, Jingsheng Miao, Xiaojun Yin, Chuluo Yang, Xiaosong Cao   +7 more
wiley   +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

Effect of La2O3 Content and the Heat Treatment on the Upconversion Luminescence of Niobate Glass

, 2015
Bulk upconversion luminescence glass was fabricated by the aerodynamic levitation method. The effect of La2O3 content and the temperature of heat treatment on the upconversion luminescence of Niobate glass was also investigated. The results show that the
Li Jianqiang, Li Jiaying, Qi Longhao, Ma Bingqian, Pan Wei, Li Bo   +5 more
core  

Advancing super‐resolution stimulated emission depletion microscopy with luminescent lanthanide nanocrystals

FlexMat, EarlyView.
The state‐of‐the‐art research advances and its cutting‐edge application in super resolution stimulated emission depletion technology based on luminescent lanthanide nanocrystals. Abstract Stimulated emission depletion (STED) microscopy overcomes the diffraction limit to reveal subcellular structures beyond the reach of conventional optical methods ...
Yaqi Chen, Tengfei Ma, Shuping Huang, Wei Guo, Yiming Wu   +4 more
wiley   +1 more source

Recent advances and prospects for high‐efficiency blue hot exciton organic light‐emitting diodes

FlexMat, EarlyView.
Blue organic light‐emitting diodes (OLEDs) face great challenges in achieving the balance between color purity, device efficiency, and stability. Hot exciton materials offer a solution by rapidly converting non‐emissive triplet excitons into singlet ones through a high‐lying reverse intersystem crossing process.
Xiaoen Shi, Shuyuan Ge, Futong Liu, Ping Lu   +3 more
wiley   +1 more source

Overcoming spectral limits of perovskite photodetectors for the infrared region

InfoScience, EarlyView.
Infrared (IR) photodetectors are vital for modern optoelectronics, but traditional inorganic semiconductors face limitations in cost, processing, and bandgap tunability. This review provides a summary of advanced strategies to extend metal halide perovskites into the IR region, categorizing approaches into intrinsic material engineering, physical ...
Jiean Li, Bobo Li, Mingxia Qiu, Wang Zhang, Xuan Fang   +4 more
wiley   +1 more source