Quantum Wells in Photovoltaic Cells
Mesoscale and Nanoscale Physics
2016-06-17 v1 Optics
Abstract
The fundamental efficiency limit of a single bandgap solar cell is about 31% at one sun with a bandgap of about Eg = 1.35 eV (1), determined by the trade-off of maximising current with a smaller bandgap and voltage with a larger bandgap. Multiple bandgaps can be introduced to absorb the broad solar spectrum more efficiently. This can be realised in multi- junction cells, for example, where two or more cells are stacked on top of each other either mechanically or monolithically connected by a tunnel junction. An alternative or complementary (see section 1.4) approach is the quantum well cell (QWC).
Keywords
Cite
@article{arxiv.1606.05128,
title = {Quantum Wells in Photovoltaic Cells},
author = {C Rohr and P Abbott and I M Ballard and D B Bushnell and J P Connolly and N J Ekins- Daukes and K W J Barnham},
journal= {arXiv preprint arXiv:1606.05128},
year = {2016}
}
Comments
Draft chapter 5 of "Next Generation Photovoltaics High Efficiency through Full Spectrum Utilization", 2004