New Ultra-Violet Band-Systems of SiS, SiSe and SiTe

Electronic Spectrum of Silicon Monosulfide: Configuration Interaction Study

“…Later on, Lagerqvist et al have tentatively assigned the upper state involved in this transition as the E 1 Σ + state of SiS. Two electronic transitions for the SiS molecule involving singlets, namely, D 1 Π−X 1 Σ + and E 1 Σ + −X 1 Σ + are also observed by many authors. , The D−X band system has been known in the near-ultraviolet region for each of SiX (X = S, Se, Te) molecules, and it appears readily in emission in positive-column discharges. , The D−X system has been photographed in absorption as well. Vago and Barrow 5 have observed a new ultraviolet E−X band system for SiS, SiSe, and SiTe molecules in absorption at the temperature range 800−1000 °C.…”

“…Over the past few decades, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] there has been a significant increase in the amount of experimental and theoretical data on the spectroscopy of diatomic molecules of group IV/VI atoms. The compounds of germanium and silicon are known to be good semiconducting materials.…”

“…The compounds of germanium and silicon are known to be good semiconducting materials. Barrow and co-workers [1][2][3][4][5][6][7][8] have made pioneering research on these molecules. The red-degraded emission bands in the electric discharge through argon and the vapor of SiS have been observed by Barrow and Jevons.…”

“…8,9 The D-X band system has been known in the near-ultraviolet region for each of SiX (X ) S, Se, Te) molecules, and it appears readily in emission in positive-column discharges. 3,4 The D-X system has been photographed in absorption as well. Vago and Barrow 5 have observed a new ultraviolet E-X band system for SiS, SiSe, and SiTe molecules in absorption at the temperature range 800-1000 °C.…”

Multireference configuration interaction study of the low-lying electronic states of SiS+

“…Experimental spectroscopic studies and electronic structure of heteronuclear diatomics of silicon and germanium were pioneered by Barrow and co-workers [1][2][3][4][5][6][7][8]. Most of these studies are centred around the neutral species.…”