Novel EPE co-extruded encapsulating films with UV down-conversion power gain effect for highly efficient solar cells

Hydration deactivation mechanism of the 〈100〉 oriented cuprous oxide photocathodes in solar water splitting and the regenerated three-dimensional structure

“…19–21 A thorough understanding of its photoinactivation processes is crucial for eliminating this unfavourable factor. 22–24 It is widely accepted that the corrosion potentials are located between the conduction band (CB) and valence band (VB), making it susceptible to oxidation–reduction (REDOX) photocorrosion and the formation of the degradation products CuO and/or Cu. 25,26 Most previous research on the deactivation mechanism of Cu 2 O photocathodes has concentrated on the 〈111〉 orientation; for example, the oxidative product CuO was detected in the photocorrosion of 〈111〉-oriented Cu 2 O photocathodes by Zhou et al , 27 Li et al , 28 and Liu et al , 29 whilst Shinde et al , 30 Lin et al 31 and Paracchino et al 32 found that Cu 2 O photocathodes with the 〈111〉 orientation would be gradually reduced to Cu during the water photodecomposition process.…”