Phys Rev B 2006, 73:045314 CrossRef 16 Galperin M, Ratner MA, Ni

Phys Rev B 2006, 73:045314.CrossRef 16. Galperin M, Ratner MA, Nitzan A: Raman scattering in current-carrying molecular junctions. J Chem Phys 2009, 130:144109.CrossRef 17. Persson BNJ, Baratoff A: Theory of photon emission in electron tunneling to metallic particles. Phys Rev Lett 1992, 68:3224.CrossRef 18. Tian G, Luo Y: Electroluminescence of molecules in a scanning tunneling microscope: role of tunneling electrons and surface plasmons. Phys

Rev B 2011, 84:205419.CrossRef Competing interests The authors declare that they have no competing interests. Authors’ contributions KM and MS conceived the idea, designed the study, analyzed the data, CB-839 molecular weight and drafted the manuscript. HK supervised and gave suggestions on the study. All authors read and approved the final manuscript.”
“Background Transparent electronics is an advanced technology concerning the creation of invisible electronic devices. To realize transparent electronic and optoelectronic devices, transparent conducting oxides (TCOs) have been widely buy AR-13324 utilized [1–3]. Zinc oxide (ZnO) is an n-type semiconductor with a large binding energy of 60 meV and a wide bandgap of 3.3 eV. Doped ZnO thin films are promising alternatives to replace indium-tin oxide (ITO) thin films as TCOs due to the former’s stable electrical and optical properties. The low resistivity

of ZnO-based thin films arises from the presence of oxygen vacancies and zinc interstitials [4]. Aluminum (Al) [5], gallium (Ga) [6], and indium (In) [7, 8] have been widely studied as dopants to enhance the n-type conductivity of ZnO-based thin films. ZnO-based TCO materials have numerous potential applications in electronic and optoelectronic devices, such as solar cells [9], light-emitting diodes [10], blue laser diodes [11], and flat-panel displays [12]. JIB04 Trivalent cation-doped ZnO thin films present good electrical conductivity and transparency over the visible spectrum. In the past, Chung et al.

investigated the properties of Ti-doped ZnO thin films with different TiO2 concentrations and reported that the lowest resistivity of TZO thin films was achieved when the Ti concentration was 1.34 mol% [13]. Lin et al. studied the effect of substrate temperature on the properties PIK3C2G of TZO thin films by simultaneous radio frequency (RF) and DC magnetron sputtering [14]. Wang et al. examined the effects of substrate temperature and hydrogen plasma treatment on the characteristics of TZO thin films [15]. Nickel oxide (NiO) is a p-type semiconductor TCO material with a wide range of applications: it has been used in transparent conductive films [16] and electrochromic devices [17] and as a functional layer material in chemical sensors [18]. NiO has a wide bandgap of 3.6 to 4.0 eV at room temperature; hence, a NiO thin film is also transparent in the range of visible light [19].

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