Citation:
GU Ying, ZHUANG Gui-Lin, WANG JIAN-Guo. Tunable Band Gap of 2D Covalent Organic Framework by External Electric Field[J]. Chinese Journal of Inorganic Chemistry,
;2012, 28(12): 2587-2592.
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The effect of directional electric field on the band gap of NiPc-COF was studied based on Density Functional Theory (DFT) calculations. The results indicate that electric field along [100] can effectively affect the electronic structure of NiPc-COF and result in the band gap of 0.22 eV at the electric field (EF) of 3.09 V·nm-1. Furthermore, both electronic structure and frontier orbits, coupled with Mülliken charge population, reveal that the polarization of charge density along [100] direction leads to the split of some degenerate orbits resulting in the decrease of band gap.
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