APS Logo

Pressure-Induced Phase Transitions of ZnTe(en)<sub>0.5</sub>

ORAL

Abstract

Organic-inorganic hybrid semiconductors have applications in photovoltaic and light-emission technologies. ZnTe(en)0.5, which consists of alternating layers of zinc telluride (ZnTe) and ethylenediamine (en), exhibits high stability and tunable optical properties. This material has been a subject of recent interest because of its structural order and longer stability than most hybrid semiconductors.

Using small-angle X-ray scattering (SAXS) and Fourier transform infrared (FTIR) spectroscopy, this study investigated the structural response of ZnTe(en)0.5 to applied pressure. Two pressure-induced phase transitions were observed at 2.1 GPa and 3.3 GPa. SAXS data revealed splitting of the (020) and (011) peaks at these pressures, aligning with a substantial compression of the layers. Both phase transitions are characterized by substantial decreases in the blattice parameter, which is linked to the organic layer. FTIR spectra showed shifts in C-H stretching vibrational modes corresponding to the observed phase changes.

These findings indicate that the organic layer is highly compressible and most responsive to pressure changes. The ability to utilize multiple phases of ZnTe(en)0.5 opens exciting possibilities for applications in memory devices.

Publication: This work is part of a paper we hope to submit prior to the March meeting<br>Other references:<br>1 M. Wright, and A. Uddin, "Organic—inorganic hybrid solar cells: A comparative review," Sol. Energy Mater. Sol. Cells 107, 87–111 (2012).<br>2 W. Liu, W.P. Lustig, and J. Li, "Luminescent inorganic-organic hybrid semiconductor materials for energy-saving lighting applications," EnergyChem 1(2), 100008 (2019).<br>3 Kickelbick, G., Hybrid Materials: Synthesis, Characterization, and Applications (Wiley-VCH Verlag GmbH & Co. KGaA, New York, 2007).<br>4 T. Ye, M. Kocherga, Y.-Y. Sun, A. Nesmelov, F. Zhang, W. Oh, X.-Y. Huang, J. Li, D. Beasock, D.S. Jones, T.A. Schmedake, and Y. Zhang, "II–VI Organic–inorganic hybrid nanostructures with greatly enhanced optoelectronic properties, perfectly ordered structures, and shelf stability of over 15 years," ACS Nano 15(6), 10565–10576 (2021).<br>5 X. Huang, J. Li, Y. Zhang, and A. Mascarenhas, "From 1D chain to 3D network: tuning hybrid II-VI nanostructures and their optical properties," J. Am. Chem. Soc. 125(23), 7049–7055 (2003).<br>6 B. Fluegel, Y. Zhang, A. Mascarenhas, X. Huang, and J. Li, "Electronic properties of hybrid organic–inorganic semiconductors," Phys. Rev. B 70(20), 205308 (2004).<br>7 Y. Zhang, "II-VI based organic-inorganic hybrid structures: Brief review and perspective," J. Lumin. 248, 118936 (2022).<br>8 A. Poglitsch, and D. Weber, "Dynamic disorder in methylammoniumtrihalogenoplumbates (II) observed by millimeter-wave spectroscopy," J. Chem. Phys. 87(11), 6373–6378 (1987).<br>9 R.J. Elliott, J.A. Krumhansl, and P.L. Leath, "The theory and properties of randomly disordered crystals and related physical systems," Rev. Mod. Phys. 46(3), 465–543 (1974).<br>10 A.M. Rasmussen, S.T. Teklemichael, E. Mafi, Y. Gu, and M.D. McCluskey, "Pressure-induced phase transformation of In2Se3," Appl. Phys. Lett. 102(6), 062105 (2013).<br>11 B. Gupta, J. Bhalavi, S. Sharma, and A. Bisen, "Phase change materials in solar energy applications: A review," Mater. Today Proc. 46, 5550–5554 (2021).<br>12 T. Ye, M. Kocherg, Y.-Y. Sun, A. Nesmelov, F. Zhang, W. Oh, X.-Y. Huang, J. Li, D. Beasock, D.S. Jones, T.A. Schmedake, and Y. Zhang, "Highly ordered II-VI based organic-inorganic hybrids with over 15-year shelf life," ACS Nano 15, (2021).<br>13 X. Huang, J. Li, and H. Fu, "The first covalent organic−inorganic networks of hybrid chalcogenides: structures that may lead to a new type of quantum wells," J. Am. Chem. Soc. 122(36), 8789–8790 (2000).<br>14 X. Qian, X. Gu, and R. Yang, "Anisotropic thermal transport in organic−inorganic hybrid crystal β‑ZnTe(en)0.5," J Phys Chem C, (2015).<br>15 G. Shen, Y. Wang, A. Dewaele, C. Wu, D.E. Fratanduono, J. Eggert, S. Klotz, K.F. Dziubek, P. Loubeyre, O.V. Fat'yanov, P.D. Asimow, T. Mashimo, R.M.M. Wentzcovitch, and other members of the IPPS task group, "Toward an international practical pressure scale: A proposal for an IPPS ruby gauge (IPPS-Ruby2020)," High Press. Res. 40(3), 299–314 (2020).<br>16 L.M. Barmore, J. Jesenovec, J.S. McCloy, and M.D. McCluskey, "Photoluminescence of Cr3+ in β-Ga2O3 and (Al0.1Ga0.9)2 O3 under pressure," J. Appl. Phys. 133(17), 175703 (2023).<br>17 Jayaraman, A., "Diamond anvil cell and high-pressure physical investigations," Am. Phys. Soc. 55(1), 65–108 (1983).<br>18 R.J. Angel, M. Bujak, J. Zhao, G.D. Gatta, and S.D. Jacobsen, "Effective hydrostatic limits of pressure media for high-pressure crystallographic studies," J. Appl. Crystallogr. 40(1), 26–32 (2007).<br>19 S. Klotz, J.-C. Chervin, P. Munsch, and G. Le Marchand, "Hydrostatic limits of 11 pressure transmitting media," J. Phys. Appl. Phys. 42(7), 075413 (2009).<br>20 A. Hybl, and Richard E. Marsh, "Structure factor and least-squares calculation for orthorhombic systems with anisotropic vibrations," Acta Crystallogr. 14(10), 1046–1051 (1961).<br>21 P. Indelicato, and E. Lindroth, "Relativistic effects, correlation, and QED corrections on K α transitions in medium to very heavy atoms," Phys. Rev. A 46(5), 2426–2436 (1992).<br>22 J.A. Bearden, "X-ray wavelengths," Rev. Mod. Phys. 39(1), (1967).<br>23 P. Karil, N. Karma, H.S. Dager, and N. Kaurav, "Study of structural phase transition and elastic properties of ZnTe semiconducting compound under high pressure," Mater. Today Proc. 54, 782–785 (2022).<br>24 L. Segal, and F.V. Eggerton, "Infrared spectra of ethylenediamine and the dimethylethylenediamines," Appl. Spectrosc. 15(4), 116–117 (1961).<br>25 J. Hudecová, V. Profant, P. Novotná, V. Baumruk, M. Urbanová, and P. Bouř, "CH stretching region: computational modeling of vibrational optical activity," J. Chem. Theory Comput. 9(7), 3096–3108 (2013).<br>26 A.M. Rasmussen, E. Mafi, W. Zhu, Y. Gu, and M.D. McCluskey, "High pressure γ-to-β phase transition in bulk and nanocrystalline In2Se3," High Press. Res. 36(4), 549–556 (2016).

Presenters

  • Julianne Miller

    Washington State University

Authors

  • Julianne Miller

    Washington State University

  • Yong Zhang

    University of North Carolina at Charlotte

  • Matthew Douglas McCluskey

    Washington State University