Results 101 to 110 of about 240,081 (351)

Porous Silicon Bragg Reflector/Carbon Dot Hybrids: Synthesis, Nanostructure, and Optical Properties

Frontiers in Chemistry, 2018
Carbon dots (C-dots) exhibit unique fluorescence properties, mostly depending upon their physical environments. Here we investigate the optical properties and nanostructure of Carbon dots (C-dots) which are synthesized in situ within different porous ...
Naama Massad-Ivanir, Susanta Kumar Bhunia, Susanta Kumar Bhunia, Raz Jelinek, Raz Jelinek, Ester Segal, Ester Segal   +6 more
doaj   +1 more source

Crystal structure and photoluminescent properties of bis(4′-chloro-2,2′:6′,2′′-terpyridyl)cobalt(II) dichloride tetrahydrate

Acta Crystallographica Section E: Crystallographic Communications, 2020
In the title hydrated complex, [Co(C15H10ClN3)2]Cl2·4H2O, the complete dication is generated by \overline{4} symmetry. The CoN6 moiety shows distortion from regular octahedral geometry with the trans bond angles of two N—Co—N units being 160.62 (9)°.
B. Thippeswamy, P. A. Suchetan, K. M. Mahadevan, H. Nagabhushana, G. R. Vijayakumar   +4 more
doaj   +1 more source

Dynamics of four-photon photoluminescence in gold nanoantennas [PDF]

, 2011
Two-pulse correlation is employed to investigate the temporal dynamics of both two-photon photoluminescence (2PPL) and four-photon photoluminescence (4PPL) in resonant and nonresonant nanoantennas excited at a wavelength of 800 nm. Our data are consistent with the same two-step model being the cause of both 4PPL and 2PPL, implying that the first ...
arxiv   +1 more source

Actively Tuned and Spatially Trapped Polaritons

, 2005
We report active tuning of the polariton resonance of quantum well excitons in a semiconductor microcavity using applied stress. Starting with the quantum well exciton energy higher than the cavity photon mode, we use stress to reduce the exciton energy ...
Balili, R. B., Pfeiffer, L., Snoke, D. W., West, K.   +3 more
core   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

Incorporation of europium III complex into nanoparticles and films obtained by the Sol-Gel methodology

Materials Research, 2010
The sol-gel process is very effective for the preparation of new materials with potential applications in optics, sensors, catalyst supports, coatings, and specialty inorganic polymers that can be used as hosts for the accommodation of organic molecules.
Faley Jean de Sousa, Gilberto Pansani Altino de Lima, Lílian Rodrigues Ávila, Katia Jorge Ciuffi, Paulo Sergio Calefi, Eduardo José Nassar   +5 more
doaj   +1 more source

Spectroelectrochemical Determination of Förster Radii for Triplet‐Polaron Quenching in Phosphorescent Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Phosphorescent OLEDs suffer from efficiency roll‐off due to triplet‐polaron quenching (TPQ). This study demonstrates for a large set of host‐guest combinations a spectroelectrochemical method to measure the absorption of charged molecules, enabling determining TPQ Förster radii (2.5–4 nm) from the spectral overlap.
Stan E. A. Jaspars, Hiroki Tomita, Clint van Hoesel, Nicolas Daub, René A.J. Janssen, Reinder Coehoorn   +5 more
wiley   +1 more source

Synthesis and Characterization of Nano-Particles of Niobium Pentoxide with Orthorhombic Symmetry

Metals, 2017
In this work, a set of nanoparticles of Nb2O5 nanoparticles were grown by both the Pechini and the sol-gel methods. The amorphous materials were calcined at 650 #xB0;C or at 750 °C.
Miryam Rincón Joya, José José Barba Ortega, Angela Mercedes Raba Paez, José Gadelha da Silva Filho, Paulo de Tarso Cavalcante Freire   +4 more
doaj   +1 more source

Grains and grain boundaries in highly crystalline monolayer molybdenum disulfide

, 2013
Recent progress in large-area synthesis of monolayer molybdenum disulfide, a new two-dimensional direct-bandgap semiconductor, is paving the way for applications in atomically thin electronics.
Berkelbach, Timothy C., Chenet, Daniel A., Heinz, Tony F., Hone, James C., Huang, Pinshane Y., Lee, Gwan-Hyoung, Muller, David A., Reichman, David R., van der Zande, Arend M., You, Youmeng   +9 more
core   +1 more source

Sono‐Piezo‐Photosynthesis of Ethylene and Acetylene from Bioethanol under Ambient Conditions

Advanced Functional Materials, EarlyView.
A novel sono‐piezo‐photocatalytic strategy enables the conversion of bioethanol to ethylene (C2H4) and acetylene (C2H2) under ambient conditions, addressing the limitations of conventional methods that are high‐temperature and energy‐intensive. By using an advanced graphene oxide/sodium bismuth titanate heterostructure catalyst, this work achieved ...
Yue Jiang, Jiajun Zhang, Hongyang Ma, Shujie Zhou, Hsun‐Yen Lin, Sajjad S. Mofarah, Mark Lockrey, Teng Lu, Hangjuan Ren, Xiaoran Zheng, Maichael Gunawan, Suchen Huang, Yu‐Chun Huang, Fenglin Zhuo, Dali Ji, Judy N. Hart, Yun Liu, Jyh Ming Wu, Muthupandian Ashokkumar, Danyang Wang, Pramod Koshy, Charles C. Sorrell   +21 more
wiley   +1 more source