Photochromism and thermochromism of MoO3 thin films doped with ZnSe

Abstract

The photochromic and thermochromic properties of molybdenum oxide (MoO 3 ) thin films doped with zinc selenide (ZnSe) were studied. The films were deposited on glass substrates by thermal evaporation of MoO 3 -ZnSe powder mixtures. EDS measurements confirmed the incorporation of ZnSe in the MoO 3 matrix while MicroRaman spectra of the samples showed structural changes by increasing ZnSe. MoO 3 films doped with 5 mol% ZnSe presented an enhancement in the photochromic effect compared to the undoped MoO 3 samples. The thermochromic effect was most pronounced for 5 mol% ZnSe samples annealed at 23-125 o C, and for undoped samples annealed at 125-225 o C. The MoO 3 films doped with 10 mol% showed neither photochromic nor thermochromic effect.

Hybrid co-deposition of mixed-valent molybdenum–germanium oxides (MoxGeyOz): A route to tunable optical transmission

“…Specifically, the visible absorption characteristics associated with transition metal coordination complexes, perceived as color by the human eye, are attributed to the splitting of d-electron energy levels as a result of metal-ligand bonding [23,24]. The ability to systematically leverage the visible absorption of thin film coatings has several advantages for the development of coatings for ophthalmic usage [17,19,25], photovoltaics [4,[26][27][28][29], light emitting diode components [30][31][32], and plasmonics, providing a potential alternative to lossy metal-based configurations [33][34][35].…”

Extinction Coefficient Modulation of MoO3 Films Doped with Plasmonic Nanoparticles: From an Effective Medium Theory Description

“…The purpose of studying these configurations is to enhanced the optical absorbance of molybdenum trioxide (MoO 3 ). Also, the MoO 3 thin films, has been doped with zinc selenide (ZnSe), copper (Cu), silver (Ag) or gold (Au) [ 18 , 19 , 20 , 21 ].…”