Piezoelectric properties of Pb(Zr, Ti)O3-Pb(Ni, Nb)O3 ceramics and their application in energy harvesters. Issue 13 (October 2017) - Lee, Tae-Gon
Abstract: The piezoelectric properties of (1-x-y)PbZrO3 -xPbTiO3 -yPb(Ni1/3 Nb2/3 )O3 ceramics were investigated. Specimens with a large Pb(Ni1/3 Nb2/3 )O3 content, which have compositions close to the triple point, show small g33 and d33 × g33 values because of their large ε T 33 /ε0 . These values increased with a decrease in y (amount of Pb(Ni1/3 Nb2/3 )O3 ) and the specimen with x = 0.39 and y = 0.29 showed the largest g33 of 43 × 10 −3 V· m/N and d33 × g33 of 25.2 × 10 −12 m 2 /N. Cantilever-type energy harvesters were fabricated using specimens with 0.38 ≤ x ≤ 0.41 and y = 0.29. The output power densities of the energy harvesters were related to the d31 × g31 × k31 2 value of the piezoelectric ceramics. The energy harvester fabricated using a specimen with x = 0.39 and y = 0.29, which has a maximum d31 × g31 × k31 2 value, showed the maximum output power density of 1.01 mW/cm 3 .