Matches in SemOpenAlex for { <https://semopenalex.org/work/W2900341775> ?p ?o ?g. }
- W2900341775 endingPage "41449" @default.
- W2900341775 startingPage "41439" @default.
- W2900341775 abstract "Three azahelicene derivatives with electron-rich bis(4-methoxyphenyl)amino or bis( p-methoxyphenyl)aminophenyl groups at the terminals were deliberately designed, synthesized, and characterized as hole-transporting materials (HTMs) for perovskite solar cells (PSCs). Optical and thermal properties, energy level alignments, film morphologies, hole extraction ability, and hole mobility were studied in detail. PSCs using the newly synthesized molecules as HTMs were fabricated. A maximum power conversion efficiency (PCE) of 17.34% was observed for the bis( p-methoxyphenyl)amino-substituted derivative (SY1) and 16.10% for the bis( p-methoxyphenyl)aminophenyl-substituted derivative (SY2). Longer-chain substituent such as hexyloxy group greatly diminishes the efficiency. In addition, the dopant-free devices fabricated with SY1 as the HTM shows an average PCE of 12.13%, which is significantly higher than that of spiro-OMeTAD (7.61%). The ambient long-term stability test revealed that after 500 h, the devices prepared from SY1 and SY2 retained more than 96% of its initial performance, which is much improved than the reference device with standard spiro-OMeTAD as the HTM under the same conditions. Detailed material cost analysis reveals that the material cost for SY1 is less than 8% of that for spiro-OMeTAD. These results provide a useful direction for designing a new class of HTMs to prepare highly efficient and more durable PSCs." @default.
- W2900341775 created "2018-11-16" @default.
- W2900341775 creator A5010356907 @default.
- W2900341775 creator A5029399992 @default.
- W2900341775 creator A5036381098 @default.
- W2900341775 creator A5055342027 @default.
- W2900341775 creator A5060295344 @default.
- W2900341775 creator A5073470280 @default.
- W2900341775 creator A5088139396 @default.
- W2900341775 date "2018-11-08" @default.
- W2900341775 modified "2023-09-29" @default.
- W2900341775 title "New Helicene-Type Hole-Transporting Molecules for High-Performance and Durable Perovskite Solar Cells" @default.
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