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Suche nach „[C.] [Yang]“ hat 5 Publikationen gefunden
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    Elektrotechnik und MedientechnikIQMA

    Vortrag

    Manuel Bogner, C. Yang, Günther Benstetter, Y. Fu, M. Grundmann

    Nanoscale thermal properties of next generation transparent/flexible thermoelectric copper iodide films

    Posterpräsentation

    5. Tag der Forschung, Deggendorf

    2018

    Elektrotechnik und MedientechnikIQMA

    Vortrag

    Manuel Bogner, C. Yang, Günther Benstetter, Y. Fu, M. Grundmann

    Nanoscale thermal properties of next generation transparent/flexible thermoelectric copper iodide films

    Posterpräsentation

    5th Nano Today Conference, Hawaii, USA

    2017

    NachhaltigElektrotechnik und MedientechnikIQMA

    Zeitschriftenartikel

    C. Yang, D. Souchay, M. Kneiß, Manuel Bogner, H. Wei, M. Lorenz, O. Oeckler, Günther Benstetter, Y. Fu, M. Grundmann

    Transparent flexible thermoelectric material based on non-toxic earth-abundant p-type copper iodide thin film

    nature COMMUNICATIONS, no. July, pp. 1-7

    2017

    DOI: 10.1038/ncomms1607

    Abstract anzeigen

    Thermoelectric devices that are flexible and optically transparent hold unique promise for future electronics. However, development of invisible thermoelectric elements is hindered by the lack of p-type transparent thermoelectric materials. Here we present the superior room-temperature thermoelectric performance of p-type transparent copper iodide (CuI) thin films. Large Seebeck coefficients and power factors of the obtained CuI thin films are analysed based on a single-band model. The low-thermal conductivity of the CuI films is attributed to a combined effect of the heavy element iodine and strong phonon scattering. Accordingly, we achieve a large thermoelectric figure of merit of ZT=0.21 at 300 K for the CuI films, which is three orders of magnitude higher compared with state-of-the-art p-type transparent materials. A transparent and flexible CuI-based thermoelectric element is demonstrated. Our findings open a path for multifunctional technologies combing transparent electronics, flexible electronics and thermoelectricity.

    NachhaltigElektrotechnik und MedientechnikIQMA

    Zeitschriftenartikel

    H. Fan, Y. You, W. Ni, Q. Yang, L. Liu, Günther Benstetter, D. Liu, C. Liu

    Surface degeneration of W crystal irradiated with low-energy hydrogen ions

    Scientific Reports (Nature Publishing Group), vol. 6, no. Article number: 23738

    2016

    DOI: 10.1038/srep23738

    Abstract anzeigen

    The damage layer of a W (100) crystal irradiated with 120 eV hydrogen ions at a fluence of up to 1.5 × 1025/m2 was investigated by scanning electron microscopy and conductive atomic force microscopy (CAFM). The periodic surface degeneration of the W crystal at a surface temperature of 373 K was formed at increasing hydrogen fluence. Observations by CCD camera and CAFM indicate the existence of ultrathin surface layers due to low-energy H irradiation. The W surface layer can contain a high density of nanometer-sized defects, resulting in the thermal instability of W atoms in the surface layer. Our findings suggest that the periodic surface degeneration of the W crystal can be ascribed to the lateral erosion of W surface layers falling off during the low-energy hydrogen irradiation. Our density functional theory calculations confirm the thermal instability of W atoms in the top layer, especially if H atoms are adsorbed on the surface.

    NachhaltigElektrotechnik und MedientechnikIQMA

    Zeitschriftenartikel

    Q. Yang, Y.-W. You, L. Liu, H. Fan, W. Ni, D. Liu, C. Liu, Günther Benstetter, Y. Wang

    Nanostructured fuzz growth on tungsten under low-energy and high-flux He irradiation

    Scientific Reports (Nature Publishing Group), vol. 5, no. Article number: 10959, pp. 1-9

    2015

    DOI: 10.1038/srep10959