electron affinity


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electron affinity

n
(Chemistry) a measure of the ability of an atom or molecule to form a negative ion, expressed as the energy released when an electron is attached. Symbol: A
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21 Table 2 Temperature-dependent parameters of HIT layers at 25[degrees]C and 75[degrees]C Parameter Unit Dielectric Constant -- Electron Affinity eV Mobility Bandgap (Eg) eV Optical Bandgap (Egopt) eV Effective Conduction Band Density of States [cm.
The calculation involved the method of selecting the parameters such as the exponents of STO's, the valence orbital ionization potentials, the electron affinity, the electronegativity, the Slater's electrostatic parameters and the bonding parameters etc.
So once we put these two materials together, electrons move from one to another based on their different electron affinity," Wang said.
Polarization-dependent electron affinity of LiNbO3 surfaces.
In the corona, the interaction between free atoms or ions with condensed matter results in the production of highly ionized species, like FeXXV [23,24], since condensed matter has the ability to maintain a higher electron affinity than a free atom.
This functionalization leads to a significant increase in the electron affinity of the materials and a considerable reduction in the band gap, consistent with near-IR emission in organic light emitting diodes (OLEDs), ambipolar organic field effect transistor (OFET) mobility, improved n-type stability and effective light harvesting in organic photovoltaic cells (OPVs).
Energy generation in biological systems takes advantage of the energetic favorability that accompanies the movement of electrons from molecules with low affinity to those with high electron affinity.
Whereas, the presence of cyano group provides high electron affinity to the polymer backbone and hence polymers such as cyano-substituted PPV (CN-PPV) exhibits high internal efficiency in PLEDs (32).
Good and efficient mediators should be permeable in a cell membrane and have higher electron affinity than the electron carriers of the electron transport chains.
The global reactivity descriptors such as ionization energy, electron affinity, molecular hardness, chemical potential and molecular philicity were estimated at ab-initio level of theory employing HF /3-21G basis set.
The electron affinity was found to depend upon the curvature of the substrate which increases with increasing curvature.
Silver's electron affinity of 126 kJ/mol is higher than copper's at 119 kJ/mol, so silver does the stealing and copper does the giving.