Photocurrent characteristics of HgTe nanoparticle films-Si nanowires heterojunctions made using a simple transfer-dropping method.

Photocurrent characteristics of HgTe nanoparticle films-Si nanowires heterojunctions made using a simple transfer-dropping method.

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

Sukhyung Park, Kyoungah Cho, Sangsig Kim

ABSTRACT

In this study, pn heterojunction diodes are constructed with p-type HgTe nanoparticle (NP) films dropped by a nanoplotter and n-type Si nanowires (NWs) transferred onto plastic substrates and their optoelectronic characteristics are investigated under the illumination of 633-nm wavelength light. The rectification ratio when light is irradiated on the diode is twice that in the dark. The photocurrent efficiency of the diode at a bias voltage of 2.5 V is determined to be 0.41 microA/W, which is greater than that of the transferred Si NWs.

MATERIALS

Product Number

Brand

Product Description

264865

Sigma-Aldrich

Tellurium, powder, −30 mesh, 99.997% trace metals basis

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