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The role of HNO3 in the electrochemical deposition of dendritic PbTe microstructures

Abstract

Dendritic PbTe microstructures were successfully obtained by a simple potentiostatic electrodeposition route from the electrolyte consisted of Pb(NO3)2, Na2TeO3 and HNO3 at room temperature. Different from Xiao’s report (Electrochimica Acta 2006, 52, 1101), in which the effects of the deposition potential and original concentrations of Pb and Te sources on the film composition and microstructure of PbTe obtained from an acidic nitrate bath were investigated, our research mainly focused on the discussion of the role HNO3 in the formation of PbTe dendrites. Experiments uncovered that some experimental parameters, including the deposition potential, the time and the additive, only slightly affected the formation of PbTe dendrites under the presence of HNO3 with certain concentration. Also, no PbTe dendrites were obtained under the same deposition conditions after HNO3 had been replaced by other strong acids such as HCl, H2SO4 and HClO4, implying that HNO3 played a crucial role in the formation of dendritic PbTe microstructures. Obviously, the present work is of great significant to direct the fast electrodeposition of dendritic PbTe microstructures in practical application.

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Publication details

The article was received on 18 Nov 2017, accepted on 09 Jan 2018 and first published on 10 Jan 2018


Article type: Paper
DOI: 10.1039/C7CE01997A
Citation: CrystEngComm, 2018, Accepted Manuscript
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    The role of HNO3 in the electrochemical deposition of dendritic PbTe microstructures

    P. Dong, X. Wang, S. Li and Y. Ni, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C7CE01997A

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