If anyone would like to know more about the science behind this story, we've set the original research article as free to access; you can find it here: http://www.materialsviews.com/matview/display/en/1412/TEXT
IBM needs to do some research... market research. Run of the mill monocrystalline is regularly hitting 19%. High end, is hitting 23% and that is in production. Multijunction are 30%+ in the lab ... these are all one sun number. CIGS is currently 13.5% in near production ready and by the time this gets to 11% I would expect production CIGS to be in the 14-15% range.
IBM says that its new ultra-cheap thin-film solar cell formulation could someday result in efficiencies as high as 20 percent, which is as high as ultra-expensive GaAs solar cells for space apps. Is 10-to-20 percent high enough to knock silicon and gallium arsenide out of the running?