This paper reviews the experimental and theoretical studies of quantum well solar cells with an aim of providing the background to the more detailed papers on this subject in these proceedings. It discusses the way quantum wells enhance e ciency in real, lattice matched material systems and fundamen
Ideal quantum well solar cell designs
β Scribed by Francis K. Rault; Ahmad Zahedi
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 391 KB
- Volume
- 21
- Category
- Article
- ISSN
- 1386-9477
No coin nor oath required. For personal study only.
β¦ Synopsis
In this paper, the e ectiveness of a new model used to design ideal quantum well solar cells (QWSC) is presented. This is achieved through the presentation of a series of ideal designs for which performance levels/absolute e ciencies are determined. Initially, we review the series of models and forge the links to obtain the overall model presented here. Further work leads to the proposal of three hypothetical QWSC designs and one a control p-i-n structure. Their performance levels are compared and discussed. The intention of this work is to justify the previous mathematical models to which this new model is based. This is done by comparison of the new model's results to an existing model's results. This shows QWSC design e ciencies ranging 23-29% with a discrepancy of Β±1:5% between presented and existing models. Further work justifying the new model leads to one other QWSC design being presented for which experimental data exists. Comparisons with experimental data show a discrepancy of 5%. The previous models used to design the structure have been experimentally veriΓΏed prior to the designs being presented. The work presented here justiΓΏes these models and shows their e ectiveness at designing QWSCs. This would prove to be beneΓΏcial to designers.
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Quantum well solar cells (QWSCs) are heterostructure devices intended to achieve higher efficiencies than conventional cells. This paper extends a previous model for QWSC current -voltage characteristics by revising the equations for the absorbed flux and by introducing expressions to calculate radi