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2.123 Aktuelle Fachpublikationen zum Thema temperature

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Growth and Device Characteristics of CZTSSe Thin-Film Solar Cells with 8.03% Efficiency

24.07.2015 | Dae-Ho Son; Dae-Hwan Kim; Si-Nae Park; Kee-Jeong Yang; Dahyun Nam; Hyeonsik Cheong; Jin-Kyu Kang, Chemistry of Materials, 2015

The improvement of the efficiency of Cu2ZnSn(S,Se)4 (CZTSSe)-based solar cells requires the formation of high-grain-sized pure CZTSSe throughout the film. We have successfully selenized precursor samples of Cu/SnS/ZnS/Mo/Soda lime glass in an almost sealed selenium furnace. Owing to the presence ...

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Effects of glass fiber on the properties of polyoxymethylene/thermoplastic polyurethane/multiwalled carbon nanotube composites

22.07.2015 | Bo‐Yuan Zhang, Ling Xu, Zhao‐Xia Guo, Jian Yu, Satoshi Nagai, Polymer Composites, 2015

The effects of epoxy‐functionalized glass fiber (GF) on the electrical conductivity, crystallization behavior, thermal stability, and dynamic mechanical properties of polyoxymethylene (POM)/thermoplastic polyurethane (TPU)/multiwalled carbon nanotube (MWCNT) composites are investigated. The ...

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Spins Dynamics in a Dissipative Environment: Hierarchal Equations of Motion Approach Using a Graphics Processing Unit (GPU)

21.07.2015 | Masashi Tsuchimoto; Yoshitaka Tanimura, Journal of Chemical Theory and Computation, 2015

A system with many energy states coupled to a harmonic oscillator bath is considered. To study quantum non-Markovian system-bath dynamics numerically rigorously and nonperturbatively, we developed a computer code for the reduced hierarchy equations of motion (HEOM) for a graphics processor unit ...

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Atomistic Molecular Insight into the Time Dependence of Polymer Glass Transition

20.07.2015 | Rongliang Wu; Xinlong Qiu; Tianyi Zhang; Kangyu Fu; Xiaozhen Yang, Journal of Physical Chemistry B, 2015

The most atomistic molecular details of polymer glass transition were analyzed through the frozen torsions in our molecular dynamics simulations. Different observation times were used to determine the frozen fractions and frozen chain lengths. The glass transition temperature was found to ...

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Fast Li Ion Dynamics in the Solid Electrolyte Li7P3S11 as Probed by 6,7Li NMR Spin‐Lattice Relaxation

16.07.2015 | Dominik Wohlmuth, Viktor Epp, Martin Wilkening, ChemPhysChem, 2015

Abstract The development of safe and long‐lasting all‐solid‐state batteries with high energy density requires a thorough characterization of ion dynamics in solid electrolytes. Commonly, conductivity spectroscopy is used to study ion transport; much less frequently, however, atomic‐scale ...

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Mechanical and thermal properties of biphenyldiol formaldehyde resin/gallic acid epoxy composites enhanced by graphene oxide

14.07.2015 | Shihui Chen, Shufang Lv, Guixiang Hou, Li Huo, Jungang Gao, Journal of Applied Polymer Science, 2015

ABSTRACT In this study, the gallic acid‐based epoxy resin (GA‐ER) and alkali‐catalysed biphenyl‐4,4′‐diol formaldehyde resin (BPFR) are synthesized. Glass fibre‐reinforced GA‐ER/BPFR composites are prepared. Graphene oxide (GO) is used to improve the mechanical and thermal properties of ...

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Supercooled spin liquid state in the frustrated pyrochlore Dy2Ti2O7 [Physics]

14.07.2015 | Ethan R. Kassner; Azar B. Eyvazov; Benjamin Pichler; Timothy J. S. Munsie; Hanna A. Dabkowska; Graeme M. Luke; J. C. ..., Proceedings of the National Academy of Sciences current issue, 2015

A “supercooled” liquid develops when a fluid does not crystallize upon cooling below its ordering temperature. Instead, the microscopic relaxation times diverge so rapidly that, upon further cooling, equilibration eventually becomes impossible and glass formation occurs. Classic supercooled ...

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Enhancing the Thermoelectric Figure of Merit by Low-Dimensional Electrical Transport in Phonon-Glass Crystals

10.07.2015 | Xue-Ya Mi; Xiaoxiang Yu; Kai-Lun Yao; Xiaoming Huang; Nuo Yang; Jing-Tao Lü, Nano Letters, 2015

Low-dimensional electronic and glassy phononic transport are two important ingredients of highly efficient thermoelectric materials, from which two branches of thermoelectric research have emerged. One focuses on controlling electronic transport in the low dimension, while the other focuses on ...

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Narrow-Band Emitting Solid Fluorescence Reference Standard with Certified Intensity Pattern

09.07.2015 | Katrin Hoffmann; Monika Spieles; Wolfram Bremser; Ute Resch-Genger, Analytical Chemistry, 2015

The development of a lanthanum-phosphate glass doped with several rare-earth-ions for use as solid fluorescence standard is described. The cuvette-shaped reference material which shows a characteristic emission intensity pattern upon excitation at 365 nm consisting of a multitude of relatively ...

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Investigation on evaporation and suppression of SnS during fabrication of Cu2SnS3 thin films

07.07.2015 | Zeguo Tang, Kiichi Kosaka, Hikaru Uegaki, Jakapan Chantana, Yuki Nukui, Daisuke Hironiwa, Takashi Minemoto, physica status solidi (a), 2015

Reaction processes for fabrication of Cu2SnS3 (CTS) thin films by sulfurization of Cu–Sn precursors are investigated by X‐ray diffraction (XRD) patterns and scanning electron microscope (SEM) images. The results reveal that the S atoms first react with Cu and Sn atoms to produce Cu2–xS, SnS2 ...

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