Optical properties of porous silicon p-Si (100)

Abstract

In this paper the reflectance spectra and transmission spectra of p-Si (100) porous silicon (PS) and silicon wires in the spectral range of 200 ÷ 1800 nm were investigated. Pore size of PS was 5 μm (lpor Si layer) and 50 μm (lpor Si layer) with porosity of 45%, 55% and 65%. The length of silicon wires varies from 5.5 μm, to 50 μm with a porosity of 60%. The decrease in the band gap of p-Si (100) porous silicon and silicon wires which grown on both sides of p-Si (100) as compared to the single crystal p-Si (100) is explained by the quantum-sized effect that occurs in the investigated objects.

Keywords

• пористий кремній p-si (100)
• спектри відбивання
• спектри пропускання
• квантоворозмірний ефект