Results 91 to 100 of about 240,081 (351)

Enhancing UV Stability and Charge Extraction in Organic Solar Cells with Phenyl‐Linked Aromatic Self‐Assembled Monolayer

Advanced Functional Materials, EarlyView.
The phenyl‐linked self‐assembled monolayer exhibits robust intrinsic stability and hole extraction capability compared to the alkyl‐linked counterparts, thus facilitating the device stability with T80 over 1000 h and efficiency of 19.7% in advancing organic solar cells.
Nan Zhang, Wenlin Jiang, Yidan An, Qi Liu, Gengxin Du, Tian Xia, Desui Chen, Chun‐To Wong, Xiao Cheng Zeng, Francis R. Lin, Alex K.‐Y. Jen, Hin‐Lap Yip   +11 more
wiley   +1 more source

Structural and Photoluminescence Properties of Ca2+-Substituted Self-Activated Photoluminescence Material of Na2TiSiO5

Journal of Mathematical and Fundamental Sciences
The effects of Ca2+ substitution on the structural and optical properties of Na2TiSiO5 were studied. It was expected that the Ca2+ ions would replace Na+ ions and change the coordination of Ti4+-O2- as a luminescence center. Na2(1‑x)CaxTiSiO5 (x = 0.00,
Dzaky Dian Ruhimat, Fainan Failamani, Bambang Prijamboedi   +2 more
doaj   +1 more source

Photoluminescence properties of N and B codoped fluorescent 4H-SiC and 6H-SiC single crystals

AIP Advances, 2018
In this paper, N and B codoped 4H-SiC and 6H-SiC single crystals were prepared by physical vapour transport method and their photoluminescence properties were studied.
Shi-Yi Zhuo, Xue-Chao Liu, Wei Huang, Ting-Xiang Xu, Wei-Wei Han, Cheng-Feng Yan, Er-Wei Shi   +6 more
doaj   +1 more source

A Mini Review on Carbon Quantum Dots: Preparation, Properties, and Electrocatalytic Application

Frontiers in Chemistry, 2019
Luminescent carbon quantum dots (CQDs) represent a new form of nanocarbon materials which have gained widespread attention in recent years, especially in chemical sensor, bioimaging, nanomedicine, solar cells, light-emitting diode (LED), and ...
Xiao Wang, Yongqiang Feng, Peipei Dong, Jianfeng Huang   +3 more
doaj   +1 more source

Measuring the spin polarization and Zeeman energy of a spin-polarized electron gas: Comparison between Raman scattering and photoluminescence [PDF]

, 2007
We compare resonant electronic Raman scattering and photoluminescence measurements for the characterization of a spin-polarized two-dimensional electron gas embedded in $\text{Cd}_{1-x}\text{Mn}_x\text{Te}$ single quantum wells. From Raman scattering by single-particle excitations in a zero magnetic field, we measure the Fermi velocity and then obtain ...
arxiv   +1 more source

Rigid Fluorescent Indacenetetraone‐Based Semiconducting Polymers via Knoevenagel Condensation

Advanced Functional Materials, EarlyView.
New donor–acceptor polymers prepared by Knoevenagel condensation of indacenedithiophene‐ and indacenedifuran‐based aldehydes reveal an exceptionally rigid backbone, which is manifested in the remarkably narrow absorption and emission bands in red to near‐infrared region.
So‐Huei Kang, Pegah Ghamari, Cory Ruchlin, Yuxuan Che, Zhechang He, Quentin Chan, Federico Rosei, Dmytro F. Perepichka   +7 more
wiley   +1 more source

Effect of Ge Nanocrystals on 1.54 μm Photoluminescence Enhancement in Er2O3:ZnO and Ge Co-Sputtered Films

Nanomaterials, 2017
Photoluminescence (PL) of Er and Ge co-doped ZnO films synthesized by radio frequency magnetron co-sputtering was investigated. X-ray diffraction (XRD) patterns showed that the annealing process at 400–800 °C led to the formation of nanocrystal (nc) Ge ...
Ranran Fan, Fei Lu, Kaikai Li
doaj   +1 more source

Photoluminescence studies study of a phenyl-substituted PPV [PDF]

arXiv, 2004
We report on the photophysics of a phenyl-substituted PPV both in solution and as a film. For both systems we have studied the decay of the photoluminescence and of the emission anisotropy for a large set of wavelengths spanning the entire photoluminescence spectrum. At long wavelengths the decay behavior is that of an interchain species.
arxiv  

Photoluminescence of single colour defects in 50 nm diamond nanocrystals

, 2005
We used optical confocal microscopy to study optical properties of diamond 50 nm nanocrystals first irradiated with an electron beam, then dispersed as a colloidal solution and finally deposited on a silica slide.
Allèaume, Beveratos, Beveratos, Beveratos, Brattke, Brokmann, Brouri, Brouri, Brunel, Darquié, Dumeige, E. Wu, F. Treussart, Fattal, Gruber, Iakoubovskii, J.-F. Roch, Jelezko, Jelezko, Krüger, Kuhn, Kurtsiefer, Lounis, Mandel, McKeever, Mita, P. Grangier, Pelton, Reynaud, Santori, T. Gacoin, Treussart, V. Jacques, Zaitsev   +33 more
core   +1 more source

Multi‐Pathway Upconversion Emission in Symmetry‐Broken Nanocavities: Broadband Multiresonant Enhancement and Anti‐Correlated Interfacial Sensitivity

Advanced Functional Materials, EarlyView.
Symmetry‐broken plasmonic nanoantenna arrays achieve broadband multiresonant enhancement of second harmonic generation (SHG), third harmonic generation (THG), and upconversion photoluminescence (UCPL), under femtosecond laser excitation across the near‐infrared range (1000–1600 nm).
Elieser Mejia, Yuming Zhao, Meitong Nie, Benjamin Pittelkau, Aditya Garg, Junyeob Song, Wenqi Zhu, Henri Lezec, Amit Agrawal, Wei Zhou   +9 more
wiley   +1 more source