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UV photovoltaic cells fabricated utilizing GaN nanorod/Si heterostructures

Authors
Journal
Journal of Crystal Growth
0022-0248
Publisher
Elsevier
Publication Date
Volume
312
Identifiers
DOI: 10.1016/j.jcrysgro.2010.04.052
Keywords
  • A1. Nanostructures
  • A3. Hydrid Vapor Phase Epitaxy
  • B1. Nanomaterials
  • B3. Solar Cells
Disciplines
  • Physics

Abstract

Abstract Well-aligned GaN nanorods were synthesized on Si substrates to form heterojunctions with potential applications in photovoltaic (PV) cells. Transmission electron microscopy images, selected area electron diffraction pattern images, and photoluminescence spectra showed that the GaN crystalline nanorods were preferentially oriented along the [0 0 0 1] direction and were very well-aligned perpendicular to the Si (1 1 1) substrate. An ultraviolet (UV) PV cell based on GaN nanorod/n-Si heterojunctions was fabricated, and current–voltage curves under an illumination with UV light exhibited obvious PV effect with a power conversion efficiency of about 1%.

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