Sub-gap defect density characterization of molybdenum oxide: An annealing study for solar cell applications
Sign Up to like & getrecommendations! Published in 2020 at "Nano Research"
DOI: 10.1007/s12274-020-3029-9
Abstract: The application of molybdenum oxide in the photovoltaic field is gaining traction as this material can be deployed in doping-free heterojunction solar cells in the role of hole selective contact. For modeling-based optimization of such… read more here.
Keywords: study; molybdenum oxide; defect density; sub gap ... See more keywords
Excitation mechanism of Tb3+ in a-Si3N4:H under sub-gap excitation
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Luminescence"
DOI: 10.1016/j.jlumin.2018.05.080
Abstract: Abstract We studied a sample of Tb-doped a-Si3N4:H prepared by electron cyclotron resonance plasma enhanced chemical vapor deposition (ECR PECVD). The sample has an optical gap E04 = 4.7 ± 0.3 eV and refractive index n (at 632 nm) = 1.81 ± 0.01.… read more here.
Keywords: si3n4; excitation; photoluminescence; tb3 ... See more keywords
A universal Urbach rule for disordered organic semiconductors
Sign Up to like & getrecommendations! Published in 2021 at "Nature Communications"
DOI: 10.1038/s41467-021-24202-9
Abstract: In crystalline semiconductors, absorption onset sharpness is characterized by temperature-dependent Urbach energies. These energies quantify the static, structural disorder causing localized exponential-tail states, and dynamic disorder from electron-phonon scattering. Applicability of this exponential-tail model to… read more here.
Keywords: energy; disorder; organic semiconductors; urbach rule ... See more keywords
Ultrafast manipulation of the NiO antiferromagnetic order via sub-gap optical excitation.
Sign Up to like & getrecommendations! Published in 2022 at "Faraday discussions"
DOI: 10.1039/d2fd00005a
Abstract: Wide-band-gap insulators such as NiO offer the exciting prospect of coherently manipulating electronic correlations with strong optical fields. Contrary to metals where rapid dephasing of optical excitation via electronic processes occurs, the sub-gap excitation in… read more here.
Keywords: band; excitation; sub gap; antiferromagnetic order ... See more keywords