The effect of substrate temperature on the optical properties of polycrystalline Sb2O3 thin films

The electronic structure of the antimony chalcogenide series: Prospects for optoelectronic applications

“…The optical band gap for α-Sb 2 O 3 is determined to be 3.54 eV, with the onset of optical absorption occurring at the smallest direct fundamental gap. The experimental optical band gap of α-Sb 2 O 3 has been reported to be in the range of 3.4-4.0 eV, depending on film thickness [6,7], as well as being direct in nature [7]. In contrast, an early optical study reported an optical band gap of approximately 4.0 eV resulting from indirect transitions [1].…”

“…The antimony chalcogenides (Sb 2 Ch 3 , Ch = O, S, Se, Te) are of considerable interest for optoelectronic applications due to their high refractive indexes, photo-sensitivity, high electrical conductivity, strong adsorption and transport properties [1,2,3,4,5,6,7,8,9,10,11,12,13,14]. Antimony oxide (Sb 2 O 3 ) is a potential candidate for photocatalysis due to its large and direct band gap located in the near-ultraviolet region [1,2].…”

“…The focus of previous studies for Sb 2 O 3 has been the electrical, vibrational and optical properties [6,7,27,28,29]. Optical band gaps in the range of 3.40-4.00 eV have been reported for Sb 2 O 3 , with the indirect/direct nature of the band gap unclear [6,7,28]. Hartree-fock calculations were used to characterise the electronic density of the Sb 4 O 6 clusters in the Senarmontite structure, indicating the presence of lone pairs on the Sb cations [30].…”

“…As the Sb III cations are expected to posses lone pairs for the distorted systems, this may indicate that they could be potental candidates for p-type conducting materials. Furthermore, altering the anion from O to Se may reduce the band gap and improve their properties for optoelectronic devices [7,12].…”

Two-dimensional photonic crystals in antimony-based films fabricated by holography

“…͓DOI: 10.1063/1.2921603͔ Antimony contained glassy materials are promising for several photonic applications. Recently, interesting studies concerning the nonlinearity, 1-3 the optical, 4 and the photochromic 5 properties of this compound were reported in both glasses and films. Some of the interesting properties presented by these glasses are high refractive index ͑Ϸ2͒, large nonlinear refractive index, n 2 large Kerr effect, low two photon absorption coefficients, large infrared transmittance, and high thermal stability.…”