التفاصيل البيبلوغرافية
| العنوان: |
π‑Extended Nonfullerene Acceptors for Efficient Organic Solar Cells with a High Open-Circuit Voltage of 0.94 V and a Low Energy Loss of 0.49 eV |
| المؤلفون: |
Junxiu Pan (10756378), Yanan Shi (532943), Jianwei Yu (2092387), Hao Zhang (15339), Yanan Liu (114059), Jianqi Zhang (763071), Feng Gao (3548), Xi Yu (469585), Kun Lu (404977), Zhixiang Wei (1494673) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Molecular Biology, Physiology, Biotechnology, Ecology, Developmental Biology, Space Science, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, BTP-C 4C, 0.49, chain length, Y 5 molecule, nonradiative energy loss, High Open-Circuit Voltage, naphthalene-based end acceptor, OSC, eV, PM, Low Energy Loss, 0.94 V, energy loss, alkyl, BTP-C 2C analogues, cm, Y 5-based devices, V oc, mA, BTP-C 6C molecules, nonfullerene, Y 5 system |
| الوصف: |
A combination of high open-circuit voltage ( V oc ) and short-circuit current density ( J sc ) typically creates effective organic solar cells (OSCs). Y5, a member of the Y-series acceptors, can achieve high V oc of 0.94 V with PM6 but low J sc of 12.8 mA cm –2 . To maintain the high V oc while increasing the J sc of devices, we developed a new nonfullerene acceptor, namely, BTP-C2C4-N, by extending the conjugation of a Y5 molecule with a naphthalene-based end acceptor. In comparison with Y5-based devices, PM6:BTP-C2C4-N-based devices exhibited significantly higher J sc of 18.2 mA cm –2 followed by a high V oc . To further increase the photovoltaic properties of BTP-C2C4-N analogues, BTP-C4C6-N and BTP-C6C8-N molecules with better processability and film morphology are obtained by adjusting the alkyl branched chain length. The optimized OSCs based on BTP-C4C6-N with a moderate alkyl branched chain length exhibited the best PCE of 12.4% with a high V oc of 0.94 V and J sc of 20.7 mA cm –2 . Notably, the devices achieved a low energy loss of 0.49 eV (0.51 eV for Y5 system) accompanied by a small nonradiative energy loss. The results indicate that nonfullerene acceptors with extended terminal motifs and optimized branched chain lengths can effectively enhance the performance of OSCs and reduce energy loss. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/_Extended_Nonfullerene_Acceptors_for_Efficient_Organic_Solar_Cells_with_a_High_Open-Circuit_Voltage_of_0_94_V_and_a_Low_Energy_Loss_of_0_49_eV/14547421 |
| DOI: |
10.1021/acsami.1c04273.s001 |
| الاتاحة: |
https://doi.org/10.1021/acsami.1c04273.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.22FD5357 |
| قاعدة البيانات: |
BASE |