Correlation between the photocatalytic activity of CdSe nanostructured thin films with optical band gap and Urbach energy

Molybdenum Based Manganese Oxides as Optoelectronic Nanomaterials: Synthesis, Structural & Optical Characterization

“…The exponential increase of the absorption coefficient near the absorption edge is described by transitions among the band tails, depending on the type of disordering [50] . Higher values of E U tend to lower the transition gap between valance and conduction band which proves quite beneficial for improved electron mobility within the nanomaterials to be used in optoelectronic and catalytic applicabilities [51] .…”

“…This was further confirmed by plotting the graph between Eg and E U as depicted in the Figure 8 The exponential increase of the absorption coefficient near the absorption edge is described by transitions among the band tails, depending on the type of disordering. [50] Higher values of E U tend to lower the transition gap between valance and conduction band which proves quite beneficial for improved electron mobility within the nanomaterials to be used in optoelectronic and catalytic applicabilities. [51] Hence, doping of metal atom can alter the E U values and in turn can influence modification of energy band gaps which definitely affects the materials efficiency to be employed in different applications.…”

Synthesis and characterization of silver-indium and antimony selenide: role in photocatalytic degradation of dyes

“… Sr. No. Material E g (eV) Dye Degradation time %age Efficiency References 1 PbSe nanomaterial 2.15 MO 0.5 h 83.13 % [ 48 ] 2 CdSe nanostructured 3.88–1.83 CR 2.5 h 50% [ 49 ] MB 4.5 h 88% 3 Ba 2 AsGaSe 5 1.39 RhB 2.5 h 23% [ 50 ] 4 bismuth selenide 1.2 RB 2 h 90% [ 51 ] CR 35% 5 Bismuth-cobalt selenide 2.35 CR 1.6 h 85% [ 52 ] 6 CdSe/CeO 2 2.61 CR 2.5 h 97.3% [ 53 ] 7 FeSe 2.0 CR 3 h 85.1% [ 54 ] 8 SrBiSbSe 3 2.01 CR 1 h 86.9% [ 55 ] 9 AgInSbSe 3 1.97 CR 1.25 h 77.8% Present study …”

Augmenting the band gap of iron diselenide pyrite via ruthenium alloy integration

“…The scope of this study is constrained by its exclusive reliance on experimental results. Future endeavors could expand the research framework to encompass theoretical analyses, akin to the investigations conducted by Sai in the context of ruthenium alloyed iron pyrite [ [32] , [33] , [34] , [35] , [36] , [37] , [38] , [39] , [40] , [41] , [42] , [43] , [44] , [45] , [46] , [47] , [48] , [49] , [50] , [51] , [52] ]. Additionally, there is potential for investigating the influence of zinc alloying on the properties of .…”

“…The pyrite crystal structure, particularly due to its isotropic nature in all three dimensions, presents intriguing applications spanning geochemistry, catalysis, and photovoltaic energy conversion [ [23] , [24] , [25] , [26] , [27] , [28] , [29] ]. Various preparation techniques, including physical vapor deposition (PVD), thermal vapor oxidation/sulfurization [ [30] , [31] , [32] , [33] ], electrochemical deposition [ 25 ], solvothermal reactions [ 34 ], vapor-liquid-solid mechanisms [ 35 ], and spray pyrolysis [ [36] , [37] , [38] ], have been employed to synthesize (X = Se, S) samples.…”