Academic Journal
Ultrafast spectroscopy on water-processable PCBM: Rod-coil block copolymer nanoparticles
| العنوان: | Ultrafast spectroscopy on water-processable PCBM: Rod-coil block copolymer nanoparticles |
|---|---|
| المؤلفون: | Ganzer L., Zappia S., Russo M., Ferretti A. M., Vohra V., Diterlizzi M., Antognazza M. R., Destri S., Virgili T. |
| المساهمون: | Ganzer, L, Zappia, S, Russo, M, Ferretti, A, Vohra, V, Diterlizzi, M, Antognazza, M, Destri, S, Virgili, T |
| بيانات النشر: | Royal Society of Chemistry GB |
| سنة النشر: | 2020 |
| المجموعة: | Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
| مصطلحات موضوعية: | nanoparticle, spectroscopy |
| الوصف: | Using ultrafast spectroscopy, we investigate the photophysics of water-processable nanoparticles composed of a block copolymer electron donor and a fullerene derivative electron acceptor. The block copolymers are based on a poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b′]dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] rod, which is covalently linked with 2 or 100 hydrophilic coil units. In both samples the photogenerated excitons in the blend nanoparticles migrate in tens of ps to a donor/acceptor interface to be separated into free charges. However, transient absorption spectroscopy indicates that increasing the coil length from 2 to 100 units results in the formation of long living charge transfer states which reduce the charge generation efficiency. Our results shed light on the impact of rod-coil copolymer coil length on the blend nanoparticle morphology and provide essential information for the design of amphiphilic rod-coil block copolymers to increase the photovoltaic performances of water-processable organic solar cell active layers. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/pmid/33201972; info:eu-repo/semantics/altIdentifier/wos/WOS:000592983900048; volume:22; issue:45; firstpage:26583; lastpage:26591; numberofpages:9; journal:PHYSICAL CHEMISTRY CHEMICAL PHYSICS; http://hdl.handle.net/10281/347471; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85096886346 |
| DOI: | 10.1039/d0cp05478j |
| الاتاحة: | http://hdl.handle.net/10281/347471 https://doi.org/10.1039/d0cp05478j |
| رقم الانضمام: | edsbas.995670A5 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1039/d0cp05478j |
|---|