RT Conference Proceedings T1 High Pressure Sputtering of Mo targets in mixed Ar/O2/H2 atmospheres for hole selective contacts in photovoltaic cells A1 Pérez Zenteno, Francisco José A1 San Andrés Serrano, Enrique A1 García Hemme, Eric A1 Torres, Ignacio A1 Barrio, Rocío A1 Caudevilla Gutiérrez, Daniel A1 Duarte Cano, Sebastián A1 García Hernansanz, Rodrigo A1 Olea Ariza, Javier A1 Pastor Pastor, David A1 Prado Millán, Álvaro Del AB We have deposited thin films of MoO x using high-pressure sputtering (HPS) and Ar/O 2 /H 2 atmospheres aiming at the compositional and interface control. We found that H2 impacts plasma composition, which in turn produces a reduction of the oxygen content and a change in the refractive index of the films. However, the presence of hydrogen in the plasma atmosphere enhances interfacial SiO x regrowth, as FTIR shows. TEM measurements show that this regrowth is not critical for thin films. Also, increasing the hydrogen ratio produces a change from amorphous to an amorphous/polycrystalline mixture. Lifetime measurements show that these films are adequate for their integration into test HIT -like structures, but require more work to produce competitive iVoc values. SN 2643-1300 YR 2023 FD 2023 LK https://hdl.handle.net/20.500.14352/91314 UL https://hdl.handle.net/20.500.14352/91314 LA eng NO F. J. P. Zenteno et al., "High Pressure Sputtering of Mo Targets in Mixed Ar/O2/H2 Atmospheres for Hole Selective Contacts in Photovoltaic Cells," 2023 14th Spanish Conference on Electron Devices (CDE), Valencia, Spain, 2023, pp. 1-4, doi: 10.1109/CDE58627.2023.1033946 NO Se deposita la versión postprint de la ponencia DS Docta Complutense RD 7 abr 2025