Optical and electronic properties of some semiconductors from energy gaps

Abstract

II-VI and III-V tetrahedral semiconductors have significant potential for novel optoelectronic applications. In the present work, some of the optical and electronic properties of these groups of semiconductors have been studied using a recently proposed empirical relationship for refractive index from energy gap. The calculated values of these properties are also compared with those calculated from some well known relationships. From an analysis of the calculated electronic polarisability of these tetrahedral binary semiconductors from different formulations, we have proposed an empirical relation for its calculation. The predicted values of electronic polarisability of these semiconductors agree fairly well with the known values over a wide range of energy gap.

Enhanced photocatalytic degradation activity of Z‐scheme heterojunction BiVO4/Cu/g‐C3N4 under visible light irradiation

“…As crystalline semiconductors, the optical band gap energy ( E g ) of BiVO 4 and g‐C 3 N 4 can be determined by the Kubelka–Munk equation (Lei et al, 2020; Tripathy & Pattanaik, 2016): …”

Optical and Electronic Properties of II-VI Group Semiconductor Nanomaterials from Energy Gaps

“…The RI in semiconductors is a strength of its transparency to incident spectral radiation. The RI decides how much light is bent, or reflected when entering a material [2,10]. In the current work, we have used Tripathy relation [11] and proposed RJ relation to calculate refractive index of II-VI group of semiconductors for a wide range of energy gaps.…”

“…The static limit dielectric constant E ∞ is linked to the RI n along a simplified expression E ∞ = n 2 , where the magnetic permeability of the medium is close to 1. The paramount characteristics of dielectrics is their strength to become polarized under the action of an external electric field [2,10].…”

“…In semiconductors, two essential characteristics specifically refractive index and energy gap determine their electronic and optical function. There have been several efforts to connect these two quantities with a relevent relation [8][9][10]. In the current work, we have used Tripathy relation [11] and modified this relation to examine some of the electronic and optical characteristics of II-VI group semiconductors.…”

Structural, Conductivity, and Dielectric Properties of Nickel Oxide and Copper (Cu) or Chromium (Cr) Doped Nickel Oxide Nanoparticles

“…The electrical conductivity changes of these semi-conductors is a very important characteristic especially when interacting with gas molecules of the surrounding atmosphere 2,3 . Wide research has been conducted on the application of semiconductor materials including environmental, electronic and energy applications 4 . This application has contributed to the increasing importance of developing and improving the physical properties of semi-conductors.…”