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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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Article information


Submitted
27 Nov 2013
Accepted
05 Feb 2014
First published
05 Feb 2014

CrystEngComm, 2014,16, 4113-4119
Article type
Paper
Author version available

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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