Zero Thermal Expansion in a Nanostructured Inorganic-Organic Hybrid Crystal

Y. Zhang, Z. Islam, Y. Ren, P. A. Parilla, S. P. Ahrenkiel, P. L. Lee, A. Mascarenhas, M. J. McNevin, I. Naumov, H. X. Fu, X. Y. Huang, J. Li

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Abstract

There are very few materials that exhibit zero thermal expansion (ZTE), and of these even fewer are appropriate for electronic and optoelectronic applications. We find that a multifunctional crystalline hybrid inorganic-organic semiconductor, β-ZnTe(en)0.5 (en denotes ethylenediamine), shows uniaxial ZTE in a very broad temperature range of 4-400 K, and concurrently possesses superior electronic and optical properties. The ZTE behavior is a result of compensation of contraction and expansion of different segments along the inorganic-organic stacking axis. This work suggests an alternative route to designing materials in a nanoscopic scale with ZTE or any desired positive or negative thermal expansion (PTE or NTE), which is supported by preliminary data for ZnTe(pda)0.5 (pda denotes 1,3-propanediamine) with a larger molecule.

Original languageAmerican English
Article number215901
Number of pages4
JournalPhysical Review Letters
Volume99
Issue number21
DOIs
StatePublished - 19 Nov 2007

NREL Publication Number

  • NREL/JA-590-41438

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