نتایج جستجو برای: crystallinity index

تعداد نتایج: 401720  

2010
Tetsuro Hori Varutt Kittichungchit Hiroki Moritou Hitoshi Kubo Akihiko Fujii Masanori Ozaki

The solvent vapor treatment (SVT) for poly(3-hexylthiophene) (PAT6) films and its application to interpenetrating heterojunction organic solar cells have been studied. It was found that SVT could improve the crystallinity and electrical characteristics of the PAT6 films. We fabricated organic solar cells with an interpenetrating structure of PAT6 and fullerenes utilizing the SVT process, and di...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2006
Birgit Schwenzer John R Gomm Daniel E Morse

By kinetically controlled vapor-diffusion catalysis, nanostructured ZnO and Zn5(OH)8(NO3)3*2H2O thin films have been grown on substrates with different chemical compositions and varying degrees of crystallinity. The materials resulting from heterogeneous nucleation under mild conditions (starting from aqueous metal salt precursor solutions at room temperature) were characterized by X-ray diffra...

2016
Jianhai Wang Yanfei Shen Ying Li Songqin Liu Yuanjian Zhang

As an emerging metal-free semiconductor, covalently bonded carbon nitride (CN) has attracted much attention in photocatalysis. However, drawbacks such as a high recombination rate of excited electrons and holes hinder its potential applications. Tailoring the crystallinity of semiconductors is an important way to suppress unwanted charge recombination, but has rarely been applied to CN so far. ...

2006
Thomas Röder Johann Moosbauer Mario Fasching Andreas Bohn Hans-Peter Fink Thomas Baldinger Herbert Sixta

The crystallinity of cellulose is one of the main structural parameters determining properties like accessibility and reactivity of cellulose. Native cellulose (e.g., wood, pulp, cotton, kenaf, bacteria cellulose) consists of the cellulose I, regenerated cellulose consists of the cellulose II modification. WAXS (wide angle X-ray scattering) is the standard method for the determination of crysta...

2013
Lidija Glavas Peter Olsén Karin Odelius Ann-Christine Albertsson

We have designed a pathway for controlling the critical micelle concentration and micelle size of polyester-based systems. This was achieved by creating an array of different copolymers with semicrystalline or amorphous hydrophobic blocks. The hydrophobic block was constructed through ring-opening polymerization of ε-caprolactone, L-lactide, and ε-decalactone, either as homopolymers or random c...

1999
J. Kudrna P. Malý I. Pelant J. Meier U. Kroll

We have studied ultrafast dynamics of photoexcited carriers in mc-Si:H by pump and probe laser spectroscopy. We have found that the dynamics of photoexcited carriers in mc-Si:H depend on the crystallinity of the material: in the samples with low crystalline fraction, the dynamics have a fast decay and resemble those in a-Si:H, while in the samples with high crystallinity the dynamics are slower...

2016
Zoran Ristanović Jan P. Hofmann Marie‐Ingrid Richard Tao Jiang Gilbert A. Chahine Tobias U. Schülli Florian Meirer Bert M. Weckhuysen

Structure-activity relationships in heterogeneous catalysis are challenging to be measured on a single-particle level. For the first time, one X-ray beam is used to determine the crystallographic structure and reactivity of a single zeolite crystal. The method generates μm-resolved X-ray diffraction (μ-XRD) and X-ray excited optical fluorescence (μ-XEOF) maps of the crystallinity and Brønsted r...

Journal: :journal of the Japan Society for Testing Materials 1961

2016
Gabriella Cavallo Giancarlo Terraneo Alessandro Monfredini Marco Saccone Arri Priimagi Tullio Pilati Giuseppe Resnati Pierangelo Metrangolo Duncan W Bruce

Unconventional ionic liquid crystals in which the liquid crystallinity is enabled by halogen-bonded supramolecular anions [Cn F2 n+1 -I⋅⋅⋅I⋅⋅⋅I-Cn F2 n+1 ](-) are reported. The material system is unique in many ways, demonstrating for the first time 1) ionic, halogen-bonded liquid crystals, and 2) imidazolium-based ionic liquid crystals in which the occurrence of liquid crystallinity is not dri...

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