Title :
Optimization of Idealized Quantum Dot Intermediate Band Solar Cells Considering Spatial Variation of Generation Rates
Author :
Sikder, Urmita ; Haque, Ashraful
Author_Institution :
Dept. of Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka, Bangladesh
Abstract :
The influences of the intermediate band (IB) filling, the absorption coefficient constants, and the IB position on the efficiency of a quantum dot intermediate band solar cell (QD-IBSC) are investigated considering the spatial variation of subbandgap generation rates. A new definition of optimal intermediate band filling is proposed. A mathematical model is developed to optimize the intermediate band solar cell (IBSC) structure under idealized conditions, which calculates the optimal ratio of the subbandgap absorption coefficient constants and the optimal position of IB.
Keywords :
absorption coefficients; quantum dots; solar cells; IB filling; IB position; IBSC structure; QD-IBSC efficiency; idealized quantum dot intermediate band solar cell optimization; intermediate band filling; mathematical model; optimal intermediate band filling; subbandgap absorption coefficient constants; subbandgap generation rate spatial variation; Absorption; Energy conversion; Energy efficiency; Integrated circuits; Integrated optics; Photovoltaic cells; Short-circuit currents; Solar cells; IB position; Intermediate band solar cell (IBSC); absorption coefficients; conversion efficiency; optimal filling;
Journal_Title :
Access, IEEE
DOI :
10.1109/ACCESS.2013.2265094
