Nearly-zero thermal expansion along the layer-stacking axis of ZnSe-based inorganic-organic hybrid semiconductor materials

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)5966-5971
Journal / PublicationEuropean Journal of Inorganic Chemistry
Issue number36
Publication statusPublished - Dec 2012
Externally publishedYes

Abstract

Zero thermal expansion (ZTE) is a desired but rare material property. Herein we report a unique family of inorganic-organic hybrid semiconductors with general formula [ZnSe(L)<sub>0.5</sub>] (L = organic diamine) that exhibit nearly-zero thermal expansion along the layer-stacking axis in the temperature range of 5-300 K. The unit cell parameters and crystal structures of [ZnSe(en)<sub>0.5</sub>], [ZnSe(pda)<sub>0.5</sub>], [ZnSe(bda)<sub>0.5</sub>], and [ZnSe(ptda)<sub>0.5</sub>] (en = ethylenediamine, pda = propanediamine, bda = butanediamine, and ptda = pentanediamine) have been refined by the Rietveld method by using powder samples, and their thermal expansion properties have been analyzed and rationalized on the basis of their crystal structures and symmetry. [ZnSe(ptda)<sub>0.5</sub>] features a very small negative linear thermal expansion coefficient (-7.8 × 10<sup>-7</sup> K<sup>-1</sup>) that approaches the smallest values reported to date. A new family of inorganic-organic hybrid semiconductors α-[ZnSe(L)<sub>0.5</sub>] (L = ethylenediamine, propanediamine, butanediamine, and pentanediamine) exhibit unique nearly-zero thermal expansion along the layer-stacking axis. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Research Area(s)

  • Organic-inorganic hybrid composites, Selenium, Semiconductors, Thermal effects, Zinc

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