We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Fluorinated Pentafulvalene-Fused Hole-Transporting Material Enhances the Performance of Perovskite Solar Cells with Efficiency Exceeding 23%.
- Authors
Lee, Kun-Mu; Huang, Yao-Shen; Chiu, Wei-Hao; Huang, Ying-Kai; Chen, Gao; Adugna, Gizachew Belay; Li, Sie-Rong; Lin, Fang-Ju; Lu, Shih-I.; Hsieh, Hsiao-Chi; Liau, Kang-Ling; Huang, Chun-Cheng; Tai, Yian; Tao, Yu-Tai; Lin, Yan-Duo
- Abstract
Organic small molecular materials with coplanar π-conjugated system as HTMs in perovskite solar cells (PSCs) have attracted considerable attention due to their high charge transport capability and thermal stability. Herein, three novel pentafulvalene-fused derivatives with or without fluorine atoms incorporated (YSH-oF and YSH-mF and YSH-H, respectively) are designed, synthesized, and applied as hole-transporting materials (HTMs) in PSCs fabrication. The fluorinated HTMs, YSH-oF and YSH-mF, exhibited higher hole mobility and better charge extraction at the perovskite/HTM interface than non-fluorinated one do, presumably due to the closer intermolecular π-π packing interactions. As a result, small-area (0.09 cm2) PSCs made with YSH-oF and YSH-mF achieved an impressive power conversion efficiency (PCE) of 23.59% and 22.76% respectively, with negligible hysteresis, in contrast with the 20.57% for the YSH-H-based devices. Furthermore, for large-area (1.00 cm2) devices, the PSCs employing YSH-oF exhibited a PCE of 21.92%. Moreover, excellent long-term device stability is demonstrated for PSCs with F-substituted HTMs (YSH-oF and YSH-mF), presumably due to the higher hydrophobicity. This study shows the great potential of fluorinated pentafulvalene-fused materials as low-cost HTM for efficient and stable PSCs.
- Subjects
SOLAR cell efficiency; SOLAR cells; HOLE mobility; CONJUGATED polymers
- Publication
Advanced Functional Materials, 2023, Vol 33, Issue 48, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202306367