Enhanced reflection from inverse tapered nanocone arrays
Research output: Contribution to journal › Article › peer-review
- University of Cambridge
- National Center for Nanoscience and Technology, Beijing 100190, China
We computationally and experimentally demonstrate enhanced reflection effects displayed by silicon-based inverted nanocone arrays. A 3D finite element model is used to characterize the optical properties of the nanocone arrays with respect to the change in polarization and incident angles. The nanocone arrays are fabricated by e-beam lithography in hexagonal and triangular geometries with a lattice constant of 300 nm. The fabricated devices show a two-fold increase in reflection compared with bare silicon surface, as well as a strong diffraction within the visible and near-infrared spectra. The nanocone arrays may find a variety of applications from optical devices to energy conservation technologies.
|Journal||Applied Physics Letters|
|Publication status||Published - 4 Aug 2014|
- Silicon, Light diffraction, Nanostructures, Polarization, Reflectivity