Fig. 3: Extreme mechanical flexibility. | Nature Communications

Fig. 3: Extreme mechanical flexibility.

From: Robust metal ion-chelated polymer interfacial layer for ultraflexible non-fullerene organic solar cells

Fig. 3

a Illustration of the ultrathin OSCs attached onto the 300% pre-stretched elastomer (VHB) to demonstrate the extreme flexibility; the cells are at flat and compressed states by stretching and releasing the elastomer. When the elastomer is stretched to the pre-stretched state, the ultrathin cell becomes flat. When the elastomer is released, the cell is at the compressed state. b Picture of ultrathin cells on a released elastomer with a 45% compression. The right is an image of an compressed cell under an optical microscope; Evolution of photovoltaic parameters after different compressed-flat cycles of ultraflexible of cells with different electrode/ETL: c with PEN/ITO/ZnO and PEN/ITO/PEI-Zn; d with PEN/AgNWs/ZnO and PEN/AgNWs/PEI-Zn; e with PEN/PEDOT:PSS/PEI-Zn; Pictures captured from the supplementary videos to demonstrate the current recovery during the cycling: f cell on a stretching-releasing apparatus; g cell attached on a finger joint.

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