Slow relaxation of piezoelectric response in CdZnTe ferroelectric semiconductor single crystals

Shanming Ke, Haitao Huang, Tao Wang, Huiqing Fan, Waiqi Jie, H. L.W. Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


The piezoelectric response in Cd0.9 Zn0.1 Te (CZT) semiconductor single crystals has been investigated by analyzing room temperature impedance spectra. The polarization is significantly influenced by light illumination. A slow relaxation process of the piezoelectric response has been observed with a relaxation time of 37 s, which is comparable to the discharge current results. The frequencies for piezoelectric resonance and antiresonance can be tuned to lower values when a bias field is applied and can be recovered when the bias field is removed. These phenomena may be universal for ferroelectric semiconductors and can be explained by a slow relaxation model in dielectrics.
Original languageEnglish
Article number162901
JournalApplied Physics Letters
Issue number16
Publication statusPublished - 31 Oct 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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