TY - JOUR
KW - Thin films
KW - Pulsed laser deposition
KW - Film growth
KW - Oxygen reduction
KW - Strontium compounds
KW - Electric resistance
KW - Thermoelectric power
KW - Backside resistance
KW - Thermoelectric thin films
KW - Thin film growth
AU - M.L Scullin
AU - C Yu
AU - M Huijben
AU - S Mukerjee
AU - J Seidel
AU - Q Zhan
AU - J Moore
AU - A Majumdar
AU - Ramamoorthy Ramesh
AB - We report the observation that thermoelectric thin films of La-doped SrTiO3 grown on SrTiO3 substrates yield anomalously high values of thermopower to give extraordinary values of power factor at 300 K. Thin films of Sr0.98 La0.02 TiO3, grown via pulsed laser deposition at low temperature and low pressure (450 °C, 10-7 Torr), do not yield similarly high values when grown on other substrates. The thin-film growth induces oxygen reduction in the SrTiO3 crystals, doping the substrate n type. It is found that the backside resistance of the SrTiO3 substrates is as low (∼12) as it is on the film side after film growth. © 2008 American Institute of Physics.
BT - Applied Physics Letters
DO - 10.1063/1.2916690
LA - eng
M1 - 20
N1 - cited By 45
N2 - We report the observation that thermoelectric thin films of La-doped SrTiO3 grown on SrTiO3 substrates yield anomalously high values of thermopower to give extraordinary values of power factor at 300 K. Thin films of Sr0.98 La0.02 TiO3, grown via pulsed laser deposition at low temperature and low pressure (450 °C, 10-7 Torr), do not yield similarly high values when grown on other substrates. The thin-film growth induces oxygen reduction in the SrTiO3 crystals, doping the substrate n type. It is found that the backside resistance of the SrTiO3 substrates is as low (∼12) as it is on the film side after film growth. © 2008 American Institute of Physics.
PY - 2008
T2 - Applied Physics Letters
TI - Anomalously large measured thermoelectric power factor in Sr1-x Lax TiO3 thin films due to SrTiO3 substrate reduction
VL - 92
SN - 00036951
ER -