This work explores the potentiality of Mo 6 clusters as new inorganic sensitizers with amphoteric properties for photoelectronic applications being non-toxic and stable. It reports on the design of photoelectrodes by electrophoretic deposition (EPD) of molybdenum octahedral metal cluster iodide (CMI) onto mesoporous TiO 2 and NiO layers before being deposited on FTO (i. e. CMI@TSO@FTO, TSO = TiO 2 or NiO). Indeed, the low-cost, lowwaste and industrially scalable EPD method has allowed for the achievement of transparent,

International audienceThis study reports the first integration of inorganic tantalum octahedral metal atom clusters into multifunctional nanocomposite coating materials and devices for window technology and energy saving applications. [Ta6Br12i](n+) (n = 2, 3 or 4) cluster-based high visible transparency UV and NIR filters are realized. Green and brown colored films are fabricated by coating on an indium-doped tin oxide glass substrate by electrophoretic deposition, an industrialized solution process. The efficiency in energy saving of the new UV-NIR filters was estimated by the determination of different figure of merit (FOM) values, such as Tvis, Tsol and Tvis/Tsol (Tsol = solar transmittance and Tvis = visible transmittance), and the color coordinates (x, y, z and L*a*b). The Tvis/Tsol ratio is equal to 1.25 for the best films. Such values are evidence of a higher energy saving efficiency than most of the inorganic composites reported in the literature. These promising results pave the way for the use of transition metal clusters as a new class of nanocoatings in energy saving window-based applications

The supporting information is available free of charge.Grazing incidence X-ray diffraction patterns (GIXRD) of the [{Mo 6 I i 8 }I a 4 (H 2 O) a 2 ].xH 2 O photoelectrode, XPS analyses (wide-range spectra, I 3d, Mo 3d and Cs 4d) obtained on the MC film and the MC precursor powder and charge carrier lifetimes determined on the MC film via the OCP decay (file type, i.e., PDF).