Optical excitations in hexagonal nanonetwork materials
نویسندگان
چکیده
منابع مشابه
Optical Excitations in Hexagonal Nanonetwork Materials
Optical excitations in hexagonal nanonetwork materials, for example, Boron-Nitride (BN) sheets and nanotubes, are investigated theoretically. The bonding of BN systems is positively polarized at the B site, and is negatively polarized at the N site. There is a permanent electric dipole moment along the BN bond, whose direction is from the B site to the N site. When the exciton hopping integral ...
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Optical excitations in hexagonal nanonetwork materials, for example, Boron-Nitride (BN) sheets and nanotubes, are investigated theoretically. A permanent electric dipole moment, whose direction is from the B site to the N site, is considered along the BN bond. When the exciton hopping integral is restricted to the nearest neighbors, the flat band of the exciton appears at the lowest energy. The...
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ژورنال
عنوان ژورنال: Journal of Experimental and Theoretical Physics
سال: 2003
ISSN: 1063-7761,1090-6509
DOI: 10.1134/1.1641907