Comparison of different kinds of solar cells.

Shapes	Materials	Light spectrum (nm)	Bandwidths (nm)	Optical absorption rate (%)	Solar cell material	Ref.
Square	Aluminum on top of polymethylmethacrylate (PMMA)	425–650	300	90	Si	29
Triangular prism and nanosphere	Silver	300–700	400	90	a-Si	30
Ring	Chromium	500–800	300	95	N/A	31
Circular nanocavity	Silver	750–1000	250	60	c-Si TFSC	32
Cuboid	Ti	300–1200	900	98.98	CdTe	Proposed design