Peculiarities of the Optical and Energy Properties of Thin CdSe Films

Electronic structure and elastic properties of Cd16Se15Te solid state solution: first principles study

“…Among numerous theoretical studies of the electron band structure [3,7,8,14,16,20,22,25,29,30], optical parameters [14,15,22,25,30] and effective mass [30][31][32] of CdSe-CdTe compounds, we have not found the corresponding results for the effective mass and elastic properties of Cd 16 Se 15 Te solid state solution corresponding to the tellurium content x = 0.0625. This value of tellurium content may be characteristic of the CdSe 1−x Te x solid state solutions possessing the zinc blend cubic structure.…”

“…This is due to the clear band gap E g dependence on the selenium content x of the material, CdTe 1−x Se x . The band gap changes from E g = 1.44 eV for CdTe [17][18][19][20]) to E g = 1.68 eV for CdSe [21][22][23]. It is also important that the above values of band gaps correspond to the near IR photon energy range, in which many commercial laser sources are accessible.…”

“…It is also important that the above values of band gaps correspond to the near IR photon energy range, in which many commercial laser sources are accessible. The CdTe compounds have a cubic (zinc blende) structure [24,25], whereas CdSe compounds, depending on the growth conditions, may have both zinc blende and wurtzite (hexagonal) structures at normal conditions [22,26,27]. According to the phase diagram [28], crystallization of CdTe 1−x Se x is possible into a cubic structure with selenium concentration x < 0.33 and into wurtzite structure with the corresponding concentration x > 0.55.…”

Elastic properties of CdTe1–xSex(x = 1/16) solid solution: First principles study

“…CdTe compounds have a cubic (zinc blende) structure [12,13], whereas CdSe compounds depending on the growth condition may have both sphalerite and wurtzite (hexagonal) structures under normal conditions [14][15][16], but the sphalerite CdSe structure is unstable and converts to the wurtzite form after moderate heating [17]. Taking into account its phase diagram [18], it was observed that CdTeSe crystallizes in the cubic structure with the concentration of CdSe compound below ~0.33 and wurtzite structure above ~0.55.…”

“…We found some works related with theoretical calculation of electron band structure [3,7,8,13,14,21,22,[26][27][28], optical parameters [13,14,22,23] and effective mass [28][29][30]. But none of them used the CdTe1-xSex (x = 1/16; Cd16Te15Se) composition in cubic structure for the calculation.…”