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Issue 20, 2014
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Unconventional upright layer orientation and considerable enhancement of proton–electron conductivity in Dion–Jacobson perovskite thin films

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Abstract

Excimer-laser-assisted metal organic deposition is a straightforward process for growing uniaxially oriented Dion–Jacobson perovskite thin films. We have confirmed that on amorphous glass substrates, Dion–Jacobson phases normally crystallize and become oriented with layer-stacking ordering, for example, in RbLa2Ti2NbO10 and RbLaNb2O7 thin films under KrF laser irradiation. Here, we observed a unique orientation in RbCa2Nb3O10 thin films, where almost perfect upright layered structures were realized on amorphous glass substrates. The precursor RbCa2Nb3O10 thin film crystallized in uniaxial (100)-orientation under KrF laser irradiation with a fluence above 100 mJ cm−2 and with a preference for (100)- and (001)-orientations below 100 mJ cm−2. The obtained (100)-oriented RbCa2Nb3O10 thin films showed an extremely high proton–electron conductivity of 4.9 × 10−2 S cm−1 at 400 °C.

Graphical abstract: Unconventional upright layer orientation and considerable enhancement of proton–electron conductivity in Dion–Jacobson perovskite thin films

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Publication details

The article was received on 27 Nov 2013, accepted on 05 Feb 2014 and first published on 05 Feb 2014


Article type: Paper
DOI: 10.1039/C3CE42418A
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CrystEngComm, 2014,16, 4113-4119

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    Unconventional upright layer orientation and considerable enhancement of proton–electron conductivity in Dion–Jacobson perovskite thin films

    T. Nakajima, K. Kobayashi, K. Shinoda and T. Tsuchiya, CrystEngComm, 2014, 16, 4113
    DOI: 10.1039/C3CE42418A

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