The special treatment alters the chemical composition of the complex sandwich structure — thereby altering its electronic properties, as confirmed by various methods including detailed electron microscope investigations. (sciencedaily.com)
They next bonded the films together using pressure into a three - layer sandwich structure. (sciencedaily.com)
Sandwich structures such as Canon's can mop up more photons as the sunlight passes from one layer to another because different semiconductors absorb light of different wavelengths. (newscientist.com)