Towards a 50% Efficient Solar Cell

necro81 writes "IEEE Spectrum magazine has a feature article describing DARPA-funded work towards developing a solar cell that's 50% efficient, for a finished module that's 40% efficient — suitable for charging a soldier's gadgets in the field. Conventional silicon and thin-film PV tech can hit cell efficiencies of upwards of 20%, with finished modules hovering in the teens. Triple-junction cells can top 40%, but are expensive to produce and not practical in most applications. Current work by the Very High Efficiency Solar Cell program uses optics (dichroic films) to concentrate incoming sunlight by 20-200x, and split it into constituent spectra, which fall on many small solar cells of different chemistries, each tuned to maximize the conversion of different wavelengths."

Comments

Very nice

[oliva23]

my best friend's half-sister makes $70 every hour on the laptop. She has been unemployed for five months but last month her paycheck was $21307 just working on the laptop for a few hours. Read more site on this web http://doiop.com/s09ci0