@Article{CL.2024.211.1,
AUTHOR = {S. Pal, D. Sharma, M. Chandra, M. Mittal, P. Singh, M. Lal, A. S. Verma},
TITLE = {Thermodynamic properties of chalcogenide and pnictide ternary tetrahedral semiconductors},
JOURNAL = {Chalcogenide Letters},
VOLUME = {21},
YEAR = {2024},
NUMBER = {1},
PAGES = {1--9},
URL = {http://www.techscience.com/CL/v21n1/65068},
ISSN = {1584-8663},
ABSTRACT = {In this paper, we present thermodynamic properties such as heat of formation, heat of fusion 
and entropy of fusion for chalcopyrite structured solids with the product of ionic charges 
and nearest neighbour distance d (Å). The heat of formation (∆Hf) of these compounds 
exhibit a linear relationship when plotted on a log-log scale against the nearest neighbour 
distance d (Å), but fall on different straight lines according to the ionic charge product of 
the compounds. On the basis of this result two simple heat of formation (∆H<sub>f</sub>)——heat of 
fusion (∆H<sup>F</sup>), and heat of formation (∆H<sub>f</sub>)——entropy of fusion (∆S<sup>F</sup>), relationship are 
proposed and used to estimate the heat of fusion (∆H<sup>F</sup>) and entropy of fusion (∆S<sup>F</sup>) of these 
semiconductors. We have applied the proposed relation to A<sup>II</sup>
B<sup>IV</sup>C<sub>2</sub>
<sup>V</sup> and A<sup>I</sup>
B<sup>III</sup>C<sub>2</sub>
<sup>VI</sup>
 
chalcopyrite semiconductor and found a better agreement with the experimental data than 
the values found by earlier researchers. The results for heat of formation differ from 
experimental values by the following amounts: 0.3% (CuGaSe<sub>2</sub>), 6.7% (CuInSe<sub>2</sub>), 5% 
(AgInSe<sub>2</sub>), 5% (ZnGeP<sub>2</sub>), 6% (ZnGeP<sub>2</sub>), 0.4% (ZnSnP<sub>2</sub>), 0.7% (ZnSiAs<sub>2</sub>), 2.6% (ZnGeAs<sub>2</sub>), 
1.2% (ZnSnAs<sub>2</sub>), 3.8% (CdGeP<sub>2</sub>), 6.4% (CdGeAs<sub>2</sub>), the results for heat of fusion differ from 
experimental values by the following amounts: 2.6% (CuGaS<sub>2</sub>), 0.6% (CuInTe<sub>2</sub>), 6% 
(ZnGeAs<sub>2</sub>), 8.8% (ZnSiAs<sub>2</sub>) and the results for entropy of fusion differ from experimental 
values by the following amounts: 6% (CuInSe<sub>2</sub>), 8% (CdSiP<sub>2</sub>). },
DOI = {10.15251/CL.2024.211.1}
}