Optical Absorption in the Near Ultraviolet Region Band Structure and Phase Change of BaTiO3

1985 ◽  
Vol 24 (S2) ◽  
pp. 651
Author(s):  
L. Castet-Mejean ◽  
G. Godefroy ◽  
L. Hafid
Keyword(s):  
Optical Absorption ◽  
Band Structure ◽  
Phase Change ◽  
Ultraviolet Region ◽  
Near Ultraviolet

Chemical Trend in Band Structure of 3d-Transition-Metal-Doped AlN Films

2018 ◽  
Vol 924 ◽  
pp. 322-325 ◽  
Author(s):  
Nobuyuki Tatemizo ◽  
Saki Imada ◽  
Yoshio Miura ◽  
Koji Nishio ◽  
Toshiyuki Isshiki
Keyword(s):  
Optical Absorption ◽  
Band Structure ◽  
Band Gap ◽  
Band Gap Energy ◽  
Energy Bands ◽  
Additional Energy ◽  
Model Calculations ◽  
Lattice Constants ◽  
Near Ultraviolet ◽  
Metal Doped

Band structure calculations for radiofrequency-sputtered AlN-films doped with various 3d-transition-metals (TM: V, Cr, and Mn) were conducted to investigate the origin of the characteristic optical absorption structures. Experimentally evaluated crystal structures and lattice constants of the synthesized films were adopted for supercells. The model calculations showed that additional energy bands mainly consisting of 3d e and t states of TMs are formed in the band gap of AlN (6.2 eV), and that their potentials depend on the TM species. It was also shown that the Fermi levels of Cr- and Mn-doped AlN lie within the spin-up t band, while the Fermi level of V-doped AlN lies between the spin-up e and t bands. These findings imply that the materials have TM species-dependent, multiple absorption paths with lower energy than the band gap energy of AlN, resulting in optical absorption in the near-ultraviolet, visible, and infrared regions.

Achieving 17.38% efficiency of ternary organic solar cells enabled by a large-bandgap donor with noncovalent conformational lock

2021 ◽  
Author(s):  
Linyong Xu ◽  
Wuxi Tao ◽  
Heng Liu ◽  
Junhua Ning ◽  
Meihua Huang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Ultraviolet Region ◽  
Near Ultraviolet

A large-bandgap donor BTBR-2F based on noncovalent conformational lock has been designed and synthesized to achieve more complementary absorption with the PM6: Y6 blend in the near-ultraviolet region. The ternary...

On the Optical Absorption of Thin BaO Film in the Ultraviolet Region

1954 ◽  
Vol 9 (6) ◽  
pp. 996-1000 ◽  
Author(s):  
Kazunori Takazawa ◽  
Tosiro Tomotika
Keyword(s):  
Optical Absorption ◽  
Ultraviolet Region

Band Structure and Interband Optical Absorption in Diamond

1968 ◽  
Vol 170 (3) ◽  
pp. 683-686 ◽  
Author(s):  
Luis R. Saravia ◽  
David Brust
Keyword(s):  
Optical Absorption ◽  
Band Structure

scholarly journals Photocatalytic NO removal over calcium-bridged siloxenes under ultraviolet and visible light irradiation

2018 ◽  
Vol 47 (20) ◽  
pp. 7070-7076 ◽  
Author(s):  
Haruo Imagawa ◽  
Xiaoyong Wu ◽  
Hiroshi Itahara ◽  
Shu Yin ◽  
Kazunobu Kojima ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Absorption Band ◽  
Optical Absorption ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Ultraviolet Region ◽  
No Removal ◽  
Optical Absorption Band

Ca-Bridged siloxenes with a wide optical absorption band from the visible to ultraviolet region exhibited photocatalytic activity for NO removal.

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