Ideal solar cell efficiencies

In a recent paper, Guillemoles et al. attempt to clarify and explain the often cited paper by Shockley Queisser2 (SQ), which defines limits photovoltaic conversion single-junction solar cell. The SQ is not easy read therefore easily misunderstood. As modern cells approach theoretical efficiency limits, fundamentals become particularly important effort be welcomed. However, in doing so, authors have fallen into several pitfalls, aim of present note number misconceptions correct some errors that for specialists non-specialists alike help disentangle complexities paper.