NOVELTY - Recyclable organic solar cell comprising several solar cell elements, each element includes first electrode; second electrode; photoactive layer disposed between the electrodes; interlayer having Lewis basic oligomer or polymer disposed between the photoactive layer and portion of first or second electrode; and substrate disposed adjacent to at least one electrode. Each solar cell element has associated polarity based at least in part on arrangement and orientation of interlayer.    USE - As recyclable organic solar cells used in organic electronics such as sensor, memory, photodetector, organic light emitting diode (OLED), organic photovoltaic (OPV) or organic field-effect transistor (OFET).    ADVANTAGE - The recyclable solar cell has substrate material synthesized from low-cost, environmentally friendly, recyclable materials. The interlayer of solar cell reduces the work function associated with the first or second electrode of the solar cell. The recyclable organic solar cells can utilize recyclable substrates having cellulose nanocrystals (CNC).    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) recycling an organic solar cell involving immersing recyclable solar cell in water-based liquid; and continuing the immersion until the water-soluble substrate disintegrates; and filtering the liquid to remove solid residue; where method further involves rinsing the filtered solid residues with rinsing fluid; and    (2) producing a recyclable solar cell using film transfer lamination involving preparing water-soluble substrate; applying to the water-soluble substrate, a first electrode; depositing on at least a portion of first electrode, interlayer comprising a Lewis basic oligomer or polymer; applying photoactive layer to the interlayer; and applying second electrode having conducting polymer to the photoactive layer; where at least one first electrode, photoactive layer, and second electrode are applied by film transfer lamination.    DESCRIPTION OF DRAWING(S) - The figure shows flow diagram of method for producing recyclable solar cell.