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The n-ZnO/p-NiO heterojunction was prepared by depositing a p-type NiO film on a c-plane sapphire by rf magnetron sputtering and then growing a n-type ZnO film on the NiO film by plasma-assisted molecular beam epitaxy. The heterojunction shows a diode-like rectification characteristic with a turn-on voltage of ∼3.6V and emits UV light upon putting a forward bias. The intensity of the UV emission increases...
This article reports on the fabrication of dendrimer molecular thin film sandwich devices with electrical switching and memory properties. The storage media consists of a redox-gradient N,N‴-(1,4-phenylene)bis(N,N′N′N″,N″-pentakis(4-methoxyphenyl)-1,3,5-benzenetriamine) (4AAPD) dendrimer layer sandwiched between two N,N′-diphenyl-N,N′-bis(3-methylphenyl)-1,1′-biphenyl-4,4′-diamine (TPD) thin films...
As many thermoelectrics are in polycrystalline form with grain size down to nanometer scale, the size and boundary effect play important roles in their physical properties. In the paper we develop an approach to simulate the electronic and thermo-electric property of polycrystalline. In the first step, the polycrystalline texture is created from phase field method in a two dimension scale for simplicity...
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