biostudies-literatureMorais Faustino BMEuropean Research Council6867https://www.ebi.ac.uk/biostudies/studies/S-EPMC5932081biostudies-literatureUnknown8(1)Developments in thermoelectric (TE) transparent p-type materials are scarce and do not follow the trend of the corresponding n-type materials - a limitation of the current transparent thermoelectric devices. P-type thermoelectric thin films of CuI have been developed by three different methods in order to maximise optical transparency (>70% in the visible range), electrical (σ = 1.1 × 10⁴ Sm^-1) and thermoelectric properties (ZT = 0.22 at 300 K). These have been applied in the first planar fully transparent p-n type TE modules where gallium-doped zinc oxide (GZO) thin films were used as the n-type element and indium thin oxide (ITO) thin films as electrodes. A thorough study of power output in single elements and p-n modules electrically connected in series and thermalScientific reportsCuI p-type thin films for highly transparent thermoelectric p-n modules.PMC5932081647596Marques AAlmeida AMorais Faustino BMGomes DBianchi CFaria JGaspar GTittonen IFerreira IJuntunen TfalseCuI p-type thin films for highly transparent thermoelectric p-n modules.Developments in thermoelectric (TE) transparent p-type materials are scarce and do not follow the trend of the corresponding n-type materials - a limitation of the current transparent thermoelectric devices. P-type thermoelectric thin films of CuI have been developed by three different methods in order to maximise optical transparency (>70% in the visible range), electrical (σ = 1.1 × 10⁴ Sm^-1) and thermoelectric properties (ZT = 0.22 at 300 K). These have been applied in the first planar fully transparent p-n type TE modules where gallium-doped zinc oxide (GZO) thin films were used as the n-type element and indium thin oxide (ITO) thin films as electrodes. A thorough study of power output in single elements and p-n modules electrically connected in series and thermal2018-01-01T00:00:00Z2018 May2026-05-05T21:49:23.699Z2019-03-26T23:36:43ZS-EPMC59320812972066310.1038/s41598-018-25106-3