High photothermal conversion efficiency for semiconducting polymer/fullerene nanoparticles and its correlation with photoluminescence quenching

Abstract

Semiconducting polymer nanoparticles (SPNs) have potential applications in a variety of fields due to their remarkable capacity to convert light into other forms of energy. This conversion can occur through...

Enhanced and Spectrally Selective Near Infrared Photothermal Conversion in Plasmonic Nanohelices

“…Intriguingly, Co and Ni nanohelices at 785 nm show the largest reported ΔT of the substrates able to work at high temperatures (red region), surpassing state-of-the art substrates such as silicon nanospheres by an order of magnitude. [14] Nanostructured substrates based on polymers show the largest ΔT among all substrates, [23][24][25] however, they can only be utilized at much lower temperatures due to their low melting point (i.e., the temperature rise ΔT reached in these substates is also low). Figure 3 also illustrates the fact that arrays of weakly coupled Co and Ni nanohelices excel at spectrally selective photothermal conversion, i.e., at efficiently converting electromagnetic radiation into heat only at specific wavelengths: the normalized temperature rise exhibited by the nanostructures at 633 nm is three orders of magnitude smaller than the temperature rise at 785 nm (close to the longitudinal LSPR).…”

Current Progress of Efficient Active Layers for Organic, Chalcogenide and Perovskite-Based Solar Cells: A Perspective

“…Nevertheless, the discovery of photoinduced electronic transference between optically excited conjugated polymers and the fullerene molecule (C 60 ) [67,68], along with the elevated photoconductivities shown by the addition of C 60 to the conjugated polymers [69], allowed the fabrication of devices based on polymer-fullerene bilayer heterojunction [70,71] or bulk heterojunction (BHJ) [72][73][74]. This advance significantly increased the values of PCEs of the corresponding devices for almost two decades (Table 1) [75][76][77][78][79][80][81][82]. The photoinduced electron mobility favorably happens in the polymer-fullerene system when the electron in the excited state of the polymer is transferred to the fullerene, which is quite more electronegative since the electron is injected from a p-type hole belonging to the conducting polymer, donor (D), to the n-type electron from the conducting C 60 molecule, acceptor (A) [83].…”