Electronic and optical properties of zinc blende and complex crystal structured solids

Abstract

The dielectric description of ionicity developed by Phillips and Van Vechten has been successfully employed in a wide range of semi-conductors and insulators. However, the applicability of this Phillips and Van Vechten (PV) dielectric analysis has been limited to only the simple A N B 8-N compounds, which contain only one type of bond. Levine has extended the theory of PV to multi bond and complex crystals. Levine's theory of ionicity has been used to calculate the various bond parameters for the chalcopyrites. In this paper a simple method based on the product of ionic charge and nearest-neighbor distance of solids, is proposed for the calculation of ionic gap (E c ), average energy gap (E g ), crystal ionicity (f i ) and dielectric constant (ε) of zinc blende (A We find the ionic gap (E c ) and average energy gap (E g ) are inversely related to product of ionic charge and nearest-neighbor distance. Our evaluated values are in excellent agreement with the values reported by different researchers.

Electronic and mechanical properties of rare earth monochalcogenides

“…In these expressions the valence electron plasmon energy is to be determined using the relation (1) in our previous publication [28]. A detailed discussion of electronic and mechanical properties of these materials has been given elsewhere [5,18,23,27,[30][31][32] and will not be presented here. Using Eqs.…”

“…Recently, Verma et al [27,30,31] has shown that the crystal ionicity, electronic polarizability and bulk modulus of zinc blende and rock salt structured binary semiconductors may be determine in terms of the product of ionic charge and nearest neighbor distance d (in Å) by the following form-…”

Inherent properties of binary tetrahedral semiconductors

“…In the previous work, [7][8][9][10][11][12], we have proposed simple expressions for the electronic, optical and…”

“…The crystal ionicity (f i ) depends on the product of ionic charges [9]. Thus, there must be a correlation between K and product of ionic charges.…”

Correlation between ground state properties and plasmon energy of ternary chalcopyrite semiconductors.

“…These electrons reside in the outermost shell of the atom. Verma and Bhardwaj [7][8],Verma and Sharma [9][10][11] …”