Within five years, the research team believes they will have a product that complements conventional PV solar panels.
This is weasel-wording, pure and simple. If his technology is nearly 5 times as efficient, and as the article says can be cheaply manufactured, then there is no need for convential PV panels anymore, they are totally obsolete. So why would he say his project "complements" them?
Read between the lines and you can learn a lot of what is not being said here. That quote tells me there is some fatal flaw with this technology and the article is not revealing that flaw.
PVs use the light from the sun these use heat.