Optical properties of arrays of Si nanopillars on the (1 0 0) surface of crystalline Si

✍ Scribed by Vladimir V Poborchii; Tetsuya Tada; Toshihiko Kanayama

• Book ID: 104429678
• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 243 KB
• Volume: 7
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(99)00380-x

✦ Synopsis

We studied Si nanopillars arrays interesting for potential applications in both photonics and electronics. Two types of the Si nanopillars arrays were investigated. The ÿrst type is a regular array (square lattice with the spacing of ∼270 nm) made up of nanopillars with diameters of 60 -70 nm (non-quantum nanopillars). Polarized re ection spectra displaying photonic band gap features and the corresponding photonic band structures were studied. The second type is a non-regular array made up of nanopillars with diameters of 10 -20 nm (quantum nanopillars). Enhancement of the optical phonon Raman band, change of selection rules and a low-frequency shift of ∼0:5 cm -1 of the band corresponding to the quantum size e ect in Si cylinders with average diameter ∼15 nm were observed for the quantum nanopillars.