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

Volume

1

fYear

2013

fDate

2013

Firstpage

363

Lastpage

370

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;

fLanguage

English

Journal_Title

Access, IEEE

Publisher

ieee

ISSN

2169-3536

Type

jour

DOI

10.1109/ACCESS.2013.2265094

Filename

6520875