Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1675260 | Thin Solid Films | 2008 | 4 Pages |
SrCu2O2 (SCO) thin films have been fabricated by pulsed laser deposition at oxygen partial pressures between 5 × 10− 5–5 × 10− 2 mbar and substrate temperatures from 300 °C to 500 °C. All films were single-phase SrCu2O2, p-type materials. Films deposited at a substrate temperature of 300 °C and oxygen pressure 5 × 10− 4 mbar exhibited the highest transparency (∼ 80%), having conductivity 10− 3 S/cm and carrier concentration around 1013 cm− 3. Films deposited at oxygen partial pressure higher than 10− 3 mbar exhibited higher conductivity and carrier concentration but lower transmittance. Depositions at substrate temperatures higher than 300 °C gave films of high crystallinity and transmittance even for films as thick as 800 nm. The energy gap of SrCu2O2 thin films was found to be around 3.3 eV.