S. Pal, D. Sharma, M. Chandra, M. Mittal, P. Singh, M. Lal, A. S. Verma
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引用次数: 0
摘要
本文介绍了黄铜矿结构固体的热力学性质,如离子电荷与近邻距离 d(埃)的乘积的形成热、熔解热和熔解熵。这些化合物的形成热(ΔHf)与近邻距离 d(埃)在对数-对数刻度上呈线性关系,但根据化合物的离子电荷乘积不同,其直线落点也不同。在此基础上,我们提出了两种简单的形成热(ΔHf) 熔合热(ΔHF)和形成热(ΔHf) 熔合熵(ΔSF)关系,并用它们来估算这些半导体的熔合热(ΔHF)和熔合熵(ΔSF)。我们将所提出的关系式应用于 AIIBIVC2 V 和 AI BIIIC2 VI 黄铜矿半导体,发现其与实验数据的吻合程度优于早期研究人员发现的数值。形成热的结果与实验值的差异如下:0.3%(CuGaSe2)、6.7%(CuInSe2)、5%(AgInSe2)、5%(ZnGeP2)、6%(ZnGeP2)、0.4%(ZnSnP2)、0.7%(ZnSiAs2)、2.6%(ZnGeAs2)、1.2% (ZnSnAs2)、3.8% (CdGeP2)、6.4% (CdGeAs2):2.6% (CuGaS2)、0.6% (CuInTe2)、6% (ZnGeAs2)、8.8% (ZnSiAs2),熔化熵的结果与实验值相差如下:6% (CuInSe2)、3.8% (CdGeP2)、6.4% (CdGeAs2):6%(CuInSe2)、8%(CdSiP2)。
Thermodynamic properties of chalcogenide and pnictide ternary tetrahedral semiconductors
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 (∆Hf)heat of fusion (∆HF), and heat of formation (∆Hf)entropy of fusion (∆SF), relationship are proposed and used to estimate the heat of fusion (∆HF) and entropy of fusion (∆SF) of these semiconductors. We have applied the proposed relation to AIIBIVC2 V and AI BIIIC2 VI 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% (CuGaSe2), 6.7% (CuInSe2), 5% (AgInSe2), 5% (ZnGeP2), 6% (ZnGeP2), 0.4% (ZnSnP2), 0.7% (ZnSiAs2), 2.6% (ZnGeAs2), 1.2% (ZnSnAs2), 3.8% (CdGeP2), 6.4% (CdGeAs2), the results for heat of fusion differ from experimental values by the following amounts: 2.6% (CuGaS2), 0.6% (CuInTe2), 6% (ZnGeAs2), 8.8% (ZnSiAs2) and the results for entropy of fusion differ from experimental values by the following amounts: 6% (CuInSe2), 8% (CdSiP2).
期刊介绍:
Chalcogenide Letters (CHL) has the aim to publish rapidly papers in chalcogenide field of research and
appears with twelve issues per year. The journal is open to letters, short communications and breakings news
inserted as Short Notes, in the field of chalcogenide materials either amorphous or crystalline. Short papers in
structure, properties and applications, as well as those covering special properties in nano-structured
chalcogenides are admitted.