Title :
Photoelectric emission from quantum wells with various potential profiles
Author :
Bose, C. ; Chakraborty, C. ; Sarkar, C.M.
Author_Institution :
Dept. of Electron. & Telecommun. Eng., Jadavpur Univ., Calcutta, India
Abstract :
The subband energies in a quantum well (QW) with rectangular, triangular and parabolic potential profiles are calculated. The subband energies for rectangular QW are found to be the lowest among the three cases, while those for the triangular well are higher than the parabolic potential profile case. The photoelectric (PE) current density as a function of the well width and the incident photon energy is investigated for all the cases. The effect of size quantization is quite evident in all cases from the oscillatory variation of the PE current density
Keywords :
band structure; current density; photoemission; semiconductor quantum wells; size effect; two-dimensional electron gas; incident photon energy dependence; oscillatory variation; parabolic potential profile; photoelectric current density; photoelectric emission; quantum wells; quasi-two-dimensional electron gas; rectangular potential profile; size quantization; subband energies; triangular potential profile; well width dependence; Current density; Electron emission; Electron optics; Energy states; Fabrication; Molecular beam epitaxial growth; Potential well; Quantization; Quantum mechanics; Stimulated emission;
Conference_Titel :
Semiconductor Conference, 1996., International
Conference_Location :
Sinaia
Print_ISBN :
0-7803-3223-7
DOI :
10.1109/SMICND.1996.557402
