the Basic and Applied Basic Research Major Program of Guangdong Province(2019B030302007)
and by the National Natural Science Foundation of China(NSFC)
This work was financially supported by the Basic and Applied Basic Research Major Program of Guangdong Province (2019B030302007), and the National Natural Science Foundation of China (51873217, 21734008, 51703228, 51961135103, 51773047 and 51903239).
The authors declare no conflict of interest.
Hou J and He C conceived and designed the experiments; An C and Ma K synthesized and characterized the molecules; Zhang J, Tang Y and Ma W performed the GIWAXS measurements; Qin J fabricated the devices; Yang Y carried out the TEM measurements; All authors contributed to the general discussion.
Supplementary information Experimental details and supporting data are available in the online version of the paper.
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Figure 1
(a) Chemical structures of the small moleculars donors B1 and BTR. (b) Optimized molecular structures of B1 and BTR obtained from the DFT-based theoretical calculations. (c) The total energy scans dependent on dihedral angles for model compounds BDT-B and BDT-T. (d) DSC traces of B1 and BTR in nitrogen at a rate of
Figure 2
Figure 3
The 2D scattering patterns and corresponding OOP and IP curves of B1:BO-4Cl and BTR:BO-4Cl blend films.
Figure 4
The AFM height images (a, d), phase images (b, e), and TEM images (c, f) of B1:BO-4Cl- and BTR:BO-4Cl-based blend films with CB SVA treatment.
Donor | Acceptor | FF | PCE (%) | Certified PCE (%) | Ref. | ||
BTR | NITI+PC71BM | 0.94 | 19.50 | 0.74 | 13.6 | 12.9 | |
BTR-Cl | Y6 | 0.86 | 24.17 | 0.66 | 13.6 | 13.0 | |
BSFTR | Y6 | 0.85 | 23.16 | 0.70 | 13.7 | 13.6 | |
ZR1 | Y6 | 0.86 | 24.34 | 0.68 | 14.3 | 14.1 | |
BTEC-2F | Y6 | 0.85 | 21.55 | 0.72 | 13.3 | - | |
B1 | BO-4Cl | 0.83 | 25.27 | 0.73 | 15.3 | 15.1 | This work |
Materials | Treatment | FF a | PCE (%) a | |||
B1:BO-4Cl | CB SVA | 0.83 (0.82±0.01) | 25.27 (24.81±0.40) | 0.73 (0.73±0.01) | 15.3 (14.9±0.2) | 24.56 |
CF SVA | 0.82 (0.82±0.01) | 24.34 (24.05±0.53) | 0.75 (0.74±0.01) | 15.0 (14.6±0.3) | 23.78 | |
BTR:BO-4Cl | CB SVA | 0.83 (0.83±0.01) | 18.67 (17.91±0.75) | 0.67 (0.66±0.01) | 10.4 (9.9±0.5) | 18.15 |
CF SVA | 0.83 (0.83±0.01) | 18.93 (19.01±0.28) | 0.72 (0.69±0.02) | 11.3 (10.9±0.3) | 18.54 |
a) The average parameters were calculated from more than 10 independent devices.
b)