Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (9): 20230092.doi: 10.7503/cjcu20230092
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ZHANG Yu, CHEN Jiehuan, ZHOU Jiadong, LIU Linlin, XIE Zengqi()
Received:
2023-03-08
Online:
2023-09-10
Published:
2023-07-11
Contact:
XIE Zengqi
E-mail:msxiez@scut.edu.cn
Supported by:
CLC Number:
TrendMD:
ZHANG Yu, CHEN Jiehuan, ZHOU Jiadong, LIU Linlin, XIE Zengqi. Aggregation Morphology of Perylene Bisimide Acceptors and the Role on Exciton Processes and Electron Transport in Organic Solar Cells[J]. Chem. J. Chinese Universities, 2023, 44(9): 20230092.
Fig.4 Fluorescence decays and temperature⁃dependent steady photoluminescence spectra of dPBIs(A) Fluorescence decays(λex=470 nm, λem=630 nm) of dPBIs as thin films; (B)—(D) temperature-dependent steady photoluminescence spectra of dPBI(1-1) film(B), dPBI(1-2) film(C) and crystalline dPBI(2-2)(D).
Sample | λ | λ | ΦPL(%) | τFLa /ns | ||
---|---|---|---|---|---|---|
TOL b | DCM b | Film c | ||||
dPBI(1⁃1) | 544 | 624 | 82.3 | 83.7 | 17.3 | 2.90 |
dPBI(1⁃2) | 548 | 629 | 82.5 | 84.2 | 19.1 | 3.93 |
dPBI(2⁃2) | 561 | 635 | 83.3 | 85.2 | 19.1 | 4.69 |
Table 1 Photophysical properties of dPBIs
Sample | λ | λ | ΦPL(%) | τFLa /ns | ||
---|---|---|---|---|---|---|
TOL b | DCM b | Film c | ||||
dPBI(1⁃1) | 544 | 624 | 82.3 | 83.7 | 17.3 | 2.90 |
dPBI(1⁃2) | 548 | 629 | 82.5 | 84.2 | 19.1 | 3.93 |
dPBI(2⁃2) | 561 | 635 | 83.3 | 85.2 | 19.1 | 4.69 |
Fig.5 Temperature⁃dependent photoluminescence decays of dPBIs(A)—(C) Temperature-dependent photoluminescence decay curves of dPBI(1-1), dPBI(1-2), and dPBI(2-2) using TCSPC module, respectively; (D) fitted photoluminescence lifetimes of dPBIs under different temperatures.
Active layer | VOC/V | JSC/(mA·cm-2) | FF(%) | PCE(%) |
---|---|---|---|---|
PM6∶dPBI(1⁃1) | 0.93 | 10.13 | 68.79 | 6.48 |
PM6∶dPBI(1⁃2) | 0.92 | 9.57 | 68.55 | 6.03 |
PM6∶dPBI(2⁃2) | 0.92 | 4.36 | 61.51 | 2.47 |
Table 2 Summary of photovoltaic performance of PM6∶dPBIs-based OSCs under the illumination of AM 1.5G, 100 mW/cm2
Active layer | VOC/V | JSC/(mA·cm-2) | FF(%) | PCE(%) |
---|---|---|---|---|
PM6∶dPBI(1⁃1) | 0.93 | 10.13 | 68.79 | 6.48 |
PM6∶dPBI(1⁃2) | 0.92 | 9.57 | 68.55 | 6.03 |
PM6∶dPBI(2⁃2) | 0.92 | 4.36 | 61.51 | 2.47 |
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