Characterization of planar pn heterojunction diodes constructed with Cu2O nanoparticle films and single ZnO nanowires.

Characterization of planar pn heterojunction diodes constructed with Cu2O nanoparticle films and single ZnO nanowires.

Journal of nanoscience and nanotechnology (2013-07-19)

Kiyeol Kwak, Kyoungah Cho, Sangsig Kim

ZUSAMMENFASSUNG

In this study, we fabricate planar pn heterojunction diodes composed of Cu2O nanoparticle (NP) films and single ZnO nanowires (NWs) on SiO2 (300 nm)/Si substrates and investigate their characteristics in the dark and under the illumination of white light and 325 nm wavelength light. The diode at bias voltages of +/- 1 V shows rectification ratios of 10 (in the dark) and 34 (under the illumination of white light). On the other hand, the diode exposed to the 325 nm wavelength light exhibits Ohmic characteristics which are associated with efficient photocurrent generation in both the Cu2O NP film and the single ZnO NW.

MATERIALIEN

Produktnummer

Marke

Produktbeschreibung

205532

Sigma-Aldrich

Zinkoxid, ReagentPlus^®, powder, <5 μm particle size, 99.9%

96479

Sigma-Aldrich

Zinkoxid, puriss. p.a., ACS reagent, ≥99.0% (KT)

544906

Sigma-Aldrich

Zinkoxid, nanopowder, ≤50 nm particle size

241741

Sigma-Aldrich

Kupfer(II)-oxid, ACS reagent, ≥99.0%

544868

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Kupfer(II)-oxid, nanopowder, <50 nm particle size (TEM)

677450

Sigma-Aldrich

Zinkoxid, nanopowder, <50 nm particle size (BET), >97%

208841

Sigma-Aldrich

Kupfer(II)-oxid, powder, <10 μm, 98%

266086

Sigma-Aldrich

Kupfer, powder, <425 μm, 99.5% trace metals basis

349178

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Kupfer, foil, thickness 0.25 mm, 99.98% trace metals basis

203122

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Kupfer, powder, 99.99% trace metals basis

721077

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Zinkoxid, Dispersion, nanoparticles, <100 nm particle size (TEM), ≤40 nm avg. part. size (APS), 20 wt. % in H₂O

14439

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Zinkoxid, puriss., meets analytical specification of Ph. Eur., BP, USP, 99-100.5% (calc. for dried substance)

207780

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Kupfer, powder, <75 μm, 99%

349216

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Kupfer, wire, diam. 1.0 mm, ≥99.9%

255750

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Zinkoxid, 99.99% trace metals basis

774111

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Kupfer, nanopowder, 40-60 nm particle size (SAXS), ≥99.5% trace metals basis

326453

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Kupfer, powder (spheroidal), 10-25 μm, 98%

450812

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Kupfer(II)-oxid, powder, 99.99% trace metals basis

357456

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Kupfer, powder (dendritic), <45 μm, 99.7% trace metals basis

349208

Sigma-Aldrich

Kupfer, foil, thickness 0.025 mm, 99.98% trace metals basis

310433

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Kupfer(II)-oxid, needles, mixture of CuO and Cu₂O, ACS reagent

61139

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Kupfer, turnings, purum p.a., ≥99.0%

774103

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Kupfer, nanopowder, 60-80 nm particle size (APS), ≥99.5% trace metals basis

311405

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Kupfer, ACS reagent, granular, 10-40 mesh, ≥99.90%

254177

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Kupfer, beads, 2-8 mm, 99.9995% trace metals basis

12816

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Kupfer, foil, ≥99.8% (complexometric)

204951

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Zinkoxid, 99.999% trace metals basis

266744

Sigma-Aldrich

Kupfer, foil, thickness 1.0 mm, 99.999% trace metals basis

203130

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Kupfer(II)-oxid, 99.999% trace metals basis

349151

Sigma-Aldrich

Kupfer, foil, thickness 0.5 mm, 99.98% trace metals basis