Optical and photophysical portrayal of Sm3+ complexes possessing two band gaps for relevance in solar cells and photovoltaic devices

Augmentation of photophysical features and Judd–Ofelt analysis of extensively green glowing terbium (III) complexes with nitrogen donor ancillary ligands

“…The refractive indices of all S1-S6 complexes determined from Eq. 5, which are found to be in the range 2.012-2.053 are referred to in Table 3, which depicts the applicability of these complexes in solar cells and photovoltaic system [30,31].…”

Computational analysis, Urbach energy and Judd–Ofelt parameter of warm Sm3+complexes having applications in photovoltaic and display devices

“…The increased Urbach tail for all complexes relative to free L indicated that the energetic disorder and structural defect are increased due to the insertion of Sm 3+ ions. 5 Urbach energy outcomes follow the inverse trend of band gap values, which were compatible for Al-doped ZnO lms.…”

“…† By dint of linear tting, more than one optical band gap (E g ) values were obtained experimentally for the indirect allowed transition (n = 2) in L along with complexes. 5,63 One band gap is in the lower energy (E g1 ) region and another is in the higher energy region (E g2 ), as depicted in Fig. 8 for the C6 complex, whereas Fig.…”

“…1 Thus, organic lanthanide complexes mark a major achievement to complete ecological illumination requirements and are also eco-friendly for the environment with respect to incandescent and uorescent lamps. [2][3][4] Recent research focuses on the synthesis of highly energy conserving organic lanthanide complexes by a liquidassisted grounding method, 5 which indicated their successful use in display devices, optoelectronic appliances, bioimaging, solar cells, etc. [6][7][8][9][10] These complexes have distinct characteristics such as large Stokes shi, line-like emission bands, higher life time and high quantum yield.…”

“…[13][14][15] In comparison with Eu 3+ and Tb 3+ ions, the optical properties of Sm 3+ ions are less studied due to a smaller energy gap between the resonating level ( 4 G 5/2 ) and the subsequent energy state. 5,9,16,17 However, the Sm 3+ ion has some other extraordinary properties such as dual emitting behaviour in UV-visible as well as NIR regions and also emission of various colors (red, orange and green) in a single complex that attract the attention of authors. [18][19][20] However, the 4f-4f transition of lanthanide(III) ions is Laporte forbidden, which results in a low emission intensity.…”