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Suche nach „[C.] [Yang]“ hat 5 Publikationen gefunden
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    F: Elektrotechnik und MedientechnikI: IQMA

    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

    F: Elektrotechnik und MedientechnikI: IQMA

    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

    NachhaltigF: Elektrotechnik und MedientechnikI: IQMA

    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.

    NachhaltigF: Elektrotechnik und MedientechnikI: IQMA

    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.

    NachhaltigF: Elektrotechnik und MedientechnikI: IQMA

    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