Title :
Tunneling conductivity of superlattice GaAs/AlGaAs n-i-p solar cells by means of the generalized Kubo-Greenwood formula and the Green´s function
Author_Institution :
Dept. of Phys. & Electron. Eng., Scranton Univ., PA, USA
Abstract :
The author derives, from first principles, an explicit result for the perpendicular conductivity of superlattice solar cells by means of the generalized Kubo-Greenwood formulas and the Green´s function. The advantage of superlattice based solar cells, when compared to their bulk counterparts is that quantization of energy levels takes place within the quantum wells leading to enhancement of conductivity. These energy levels form minibands that allow the carriers to tunnel through the barriers
Keywords :
Green´s function methods; III-V semiconductors; aluminium compounds; electrical conductivity of crystalline semiconductors and insulators; gallium arsenide; semiconductor device models; semiconductor quantum wells; semiconductor superlattices; solar cells; tunnelling; GaAs-AlGaAs; Green´s function; Kubo-Greenwood formula; energy levels quantisation; perpendicular conductivity; quantum wells; superlattice GaAs/AlGaAs n-i-p solar cells; tunneling conductivity; Conducting materials; Conductivity; Energy states; Gallium arsenide; Green´s function methods; Photovoltaic cells; Physics; Quantization; Semiconductor superlattices; Tunneling;
Conference_Titel :
Photovoltaic Specialists Conference, 1993., Conference Record of the Twenty Third IEEE
Conference_Location :
Louisville, KY
Print_ISBN :
0-7803-1220-1
DOI :
10.1109/PVSC.1993.347007
