Figure 3.
(a) Vials (#0-3) and filter paper (#4) illustrating the separation of solar cells into their major components by immersion in water and chlorobenzene. Vial #0: distilled water; Vial #1: CNC redispersed in distilled water after solar cells were immersed into water; Vial #2: solution of photoactive layer in chlorobenzene obtained by rinsing the solid waste left after the immersion into water; Vial #3: solution generated by the second rinsing the solid waste with chlorobenzene; #4: solid residues left on the filter paper after the second rinsing with chlorobenzene. The inset is a close-up of the solid waste left on the filter paper showing residues of Ag and MoO3. (b) Time lapse sequence of three frames illustrating the ignition of solar cells on CNC substrates: #1: an image of a solar cell before burning; #2: while burning; #3: after burning. Burning lasted less than 2 s.