The breakthrough isn't necessarily in efficiency (the title is misleading), but rather that it is done using low quality silicon which I would suspect means the

The breakthrough isn't necessarily in efficiency (the title is misleading), but rather that it is done using low quality silicon which I would suspect means the costs would come down drastically compared to current top-performing cells. There's no mention of expected costs nor comparison with a correlation between current panel efficiency and cost to show that it would have a large impact on the market, so we can't really know. The article is definitely more hype than substance.