Crystal structure, morphological, optical and electrical investigations of Oxypeucedanin micro crystals: an isolated compound from a plant

Optical and Schottky diode performance of Au/4-hydroxy Coumarin/ITO heterojunction

“…This band corresponds to -* absorption transition. The peak is due to -* (where represents bonding orbitals and * represents anti-bonding orbitals) transition of the electrons of C C bond in these type of systems [10][11][12][13][14][15]. The absorption band in the UV region is known as the Soret-band (B-band).…”

“…Mostly, in case of aromatic cyclic conjugated electron systems, the spectral features are because the aromatic compounds [18]. In these organic compounds, the vibrant electronic transitions seen in the ultraviolet and near visible regions are → *; n → * and → * type [10][11][12][13][14][15]. Therefore, the present absorption edge (B-band) near UV region of the spectrum, may arise from a 2u ( ) highest occupied molecular orbital (HOMO) to E g ( *) lowest unoccupied molecular orbital (LUMO) transition [18].…”

“…The optical energy gap of this organic film was obtained by using the following expression [10][11][12][13][14][15][16].…”

“…The low energy value is named the onset optical band gap (E opt g ) and attributed to the generation of Frenkel exciton, or a bound electron-hole pair [6,7,10]. High energy value is the transport gap (E tran g ) and corresponds to the energy difference between HOMO and LUMO [6,7,10,15]. The difference between E tran g and E opt g values are the binding energy (E B ).…”

“…: +91 9858338012/9018567472. E-mail address: famirnit@gmail.com group [10][11][12][13][14][15][16]. However, there is no device fabrication and characterizations of a any coumarin derivatives existing in the current literature.…”