Synthesis of highly conductive thin-walled Al-doped ZnO single-crystal microtubes by a solid state method

•A solid state method for Al-doping of thin-walled ZnO microtubes.•The Zn2+ sites and Zn(0/−1) vacancies substituted by Al dopants.•The resistivity of ZnO:Al microtube down to ∼10−3 Ω·cm. ZnO has attracted considerable attention in fundamental studies and practical applications for the past decade d...

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