Synthesis of angular-shaped naphthodithiophenediimide and its donor–acceptor copolymers as nonvolatile polymer additives for organic solar cells

Abstract

Naphthalenediimide (NDI) and its pi-extended derivatives have been one of the most important building blocks to constitute n-type organic semiconductors. To further explore new materials in the NDI family, an...

Additive-assisted strategy for high-efficiency organic solar cells

“…1c). 97 According to the PL spectra results, introducing PBM or PFBM into the PM6:Y6 blended film increased the quenching efficiency, indicating the enhanced intermolecular charge transfer. The GIWAXS and AFM results suggested that PBM and PFBM improved the crystallinity of Y6 and reduced side-chain interdigitation lamellar spacing of PM6, which was conducive to charge carrier transport, accounting for the increased J SC and FF (Table 4).…”

“…Polymer donors and small molecular acceptors with appropriate miscibility, complementary absorption and compatible energy levels were also used as nonvolatile solid additives. [97][98][99][100][101][102][103] Cheng et al enhanced the PCE of PM6:Y6 based OSCs by utilizing two polymers PBM and PFBM as additives (Fig. 1c).…”

A Fused-Ring Electron Acceptor with Phthalimide-Based Ending Groups for Efficient Ternary Organic Solar Cells

“…In order to push the PCE of PM6:Y6 OPVs to a new level, the additive strategy, − solvent strategy, − transport layer strategy, , and ternary strategy − , have been studied. Among them, the ternary strategy is one of the most effective and convenient ways .…”

Synthesis and charge-transport properties of novel π-conjugated polymers incorporating core-extended naphtho[2,1-b:3,4-b′]dithiophene diimides

“…1 Modification of classic A units 8–16 [ e.g. , naphthalene diimide (NDI) and perylene diimide (PDI)] or the creation of novel A systems, 17–26 therefore, has recently become a popular subject of engineering the optoelectronic properties of CPSs.…”