Distinctive spectroscopic features of samarium ions in the lithium zinc-borate glass

Ramifications of chromium-to-bismuth ions substitution on the structural and optical characteristics of bismuth borate glasses for optoelectronic applications

“…Bands 6, 7, and 8 observed at 892, 994, and 1072 cm −1 , respectively, are attributed to the B-O stretching vibrations within tetrahedral borate BO 4 units [23]. Bands 9, 10, and 11 found at 1178, 1248, and 1428 cm −1 , respectively, are credited to the B-O stretching vibrations within the BO 3 units [11,[23][24][25][26]. Band 12 detected at 1540 cm −1 is credited to the B-O-B symmetric stretching vibration [26].…”

“…The intensity of these bands slightly rises with increasing Cr 2 O 3 content, indicating the breaking of B-O bonds within BO 3 units and their subsequent transformation into tetrahedral BO 4 units. Finally, bands located at 1173, 1260, and 1346 cm −1 are ascribed to the B-O stretching vibrations within the BO 3 units [11,[23][24][25][26]. The band appearing at 1420 cm −1 is attributed to the B-O asymmetric stretching vibration within the BO 3 units [11,26,27].…”

“…The band appearing at 1420 cm −1 is attributed to the B-O asymmetric stretching vibration within the BO 3 units [11,26,27]. The final peak observed at 1536 cm −1 is credited to the B-O-B symmetric stretching vibration [26]. Notably, this latter band undergoes a slight shift to higher frequencies as the Cr 2 O 3 content increases.…”

“…Finally, bands located at 1173, 1260, and 1346 cm −1 are ascribed to the B-O stretching vibrations within the BO 3 units [11,[23][24][25][26]. The band appearing at 1420 cm −1 is attributed to the B-O asymmetric stretching vibration within the BO 3 units [11,26,27]. The final peak observed at 1536 cm −1 is credited to the B-O-B symmetric stretching vibration [26].…”

“…Bands 9, 10, and 11 found at 1178, 1248, and 1428 cm −1 , respectively, are credited to the B-O stretching vibrations within the BO 3 units [11,[23][24][25][26]. Band 12 detected at 1540 cm −1 is credited to the B-O-B symmetric stretching vibration [26]. As a result, the structural units that makeup glasses primarily consist of the BO 4 , BO 3 , and BiO 6 structural units connected to create a disordered network.…”