Effect of Alkoxy Side-Chains on Conjugated Polymer/Non-fullerene Acceptor Interfaces in Organic Solar Cells

• Published in: Journal of electronic materials Vol. 50; no. 4; pp. 1713 - 1719
• Main Authors: Haseena, Sheik, Ravva, Mahesh Kumar
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.04.2021; Springer Nature B.V
• Subjects: Asian Consortium ACCMS–International Conference ICMG 2020; Asian Consortium AC–CMS International Conference ICMG 2020; Characterization and Evaluation of Materials; Chemistry and Materials Science; Electronics and Microelectronics; Energy conversion efficiency; Fullerenes; Instrumentation; Materials Science; Molecular chains; Optical and Electronic Materials; Optical properties; Organic chemistry; Photovoltaic cells; Polymer blends; Quantum chemistry; Solar cells; Solid State Physics; non-fullerene acceptors; Donor–acceptor complexes; conjugated polymers; density functional theory
• ISSN: 0361-5235; 1543-186X
• DOI: 10.1007/s11664-020-08567-z

In this study, we have attempted to gain insights into the impact of alkoxy side-chains substituted on the end group of the non-fullerene acceptor. It has been shown by experimental studies that the length and position of these alkoxy side-chains substantially influence the power conversion efficiencies of solar cell devices. A detailed analysis has been made on how the length of the alkoxy side-chains impact the molecular packing and electronic and optical properties of conjugated polymers and non-fullerene acceptor blends using quantum chemical methods. The results obtained from this study provide information on why a particular alkoxy side-chain results in better device efficiencies.