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- W3159484377 abstract "Graphitic carbon nitride (g-C3N4) is a potential additive that can alter the polymer solar cells (PSC) performance. Hereby, we report a novel strategy by applying γ-radiated g-C3N4 as additive into bulk heterojunction polymer solar cell (BHJ-PSC). The incorporation of γ-radiated g-C3N4 into the active layer P3HT:PC61BM augments the efficiency of BHJ-PSC by more than half with respect to the standard undoped device counterpart. The increased performance of γ-radiated g-C3N4-doped BHJ-PSC is related to increased surface roughness, higher crystallinity, greater optical absorption of the polymer layer and improved charge transfer/recombination dynamics within the device. The optimized BHJ-PSC containing γ-radiated g-C3N4 without encapsulation reaches 2.4% power conversion efficiency (PCE) and the device also retains 60% of the initial PCE even after exposure to high humidity condition (relative humidity 40%-70%) for 30 days. This suggests that γ-radiated g-C3N4 is capable of preventing moisture and oxygen-induced degradation of P3HT:PC61BM. The γ-radiated g-C3N4 additive is also employed in PBDTTT-C:PCBM polymer system which demonstrates the champion PCE of 2.9%. The present work not only provides an effective strategy for simultaneously enhancing the efficiency and stability of BHJ-PSC, but also opens up a new horizon for radiation technology and additive engineering." @default.
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- W3159484377 date "2021-05-03" @default.
- W3159484377 modified "2023-10-11" @default.
- W3159484377 title "Improving the stability and efficiency of polymer solar cells by γ‐radiated graphitic carbon nitride" @default.
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- W3159484377 doi "https://doi.org/10.1002/er.6803" @default.
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