التفاصيل البيبلوغرافية
| العنوان: |
Reconciling the Driving Force and the Barrier to Charge Separation in Donor–Nonfullerene Acceptor Films |
| المؤلفون: |
Taylor G. Allen (2918714), Panagiota Kafourou (2561713), Bryon W. Larson (1959724), Martin Heeney (632325), Obadiah G. Reid (1235892), Garry Rumbles (1235895) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Cell Biology, Pharmacology, Science Policy, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, ≥ 300 mev, three different donors, semiconducting films made, resolved microwave conductivity, popular ones used, pl quenching measurements, photoinduced electron transfer, indacenodithiophene nonfullerene acceptors, idt nfas ), explain experimental observations, containing organic photovoltaics, 5 mmolal sensitized, driving force calculation, calculate driving force, standardizing methods across, barrierless charge separation, driving force, charge separation, charge yields, value controls, mechanisms needed |
| الوصف: |
We investigate the dependence of charge yields on the driving force for photoinduced electron transfer in a series of all-small-molecule, semiconducting films made from indacenodithiophene nonfullerene acceptors (IDT NFAs). In contrast to reports of efficient, barrierless charge separation at near zero driving force for NFA-containing organic photovoltaics, we find that barrierless charge separation occurs only if the driving force is sufficient to overcome the Coulomb potential, ≥300 meV, based on time-resolved microwave conductivity and PL quenching measurements of 5 mmolal sensitized and 700 mmolal blended films comprising IDT NFAs paired with three different donors. This discrepancy with recent literature is caused by a difference in the way that we calculate driving force. Far from being semantic, the driving force calculation is crucial because its value controls the mechanisms needed to explain experimental observations. We provide a candid assessment of the uncertainties for our methods and popular ones used in the literature and emphasize the importance of standardizing methods across this field. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Reconciling_the_Driving_Force_and_the_Barrier_to_Charge_Separation_in_Donor_Nonfullerene_Acceptor_Films/16624576 |
| DOI: |
10.1021/acsenergylett.1c01563.s001 |
| الاتاحة: |
https://doi.org/10.1021/acsenergylett.1c01563.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.4CD2614F |
| قاعدة البيانات: |
BASE |