| Title: |
Influence of N‐Substituents on Photovoltaic Properties of Singly Bay‐Linked Dimeric Perylene Diimides |
| Authors: |
Izawa, Seiichiro; Uchida, Kentaro; Nakamura, Mayuko; Fujimoto, Keisuke; Roudin, Jérémy; Lee, Ji‐Hyun; Inuzuka, Toshiyasu; Nakamura, Takumi; Sakamoto, Masami; Nakayama, Yasuo; Hiramoto, Masahiro; Takahashi, Masaki |
| Contributors: |
Japan Society for the Promotion of Science; Takahashi Industrial and Economic Research Foundation; Mazda Foundation; Kao Foundation for Arts and Sciences; Futaba Electronics Memorial Foundation |
| Source: |
Chemistry – A European Journal ; volume 27, issue 56, page 14081-14091 ; ISSN 0947-6539 1521-3765 |
| Publisher Information: |
Wiley |
| Publication Year: |
2021 |
| Collection: |
Wiley Online Library (Open Access Articles via Crossref) |
| Description: |
The influence of N ‐substituents on the photovoltaic properties of singly bay‐linked perylene diimides (diPDIs) was systematically investigated to understand the aromatic‐aliphatic balance, which is beneficial for achieving high device performance in organic photovoltaic (OPV) systems. The synthesis of various N ‐substituted diPDIs was successfully achieved using a newly developed one‐step procedure, resulting in sufficiently high yields. Detailed investigations of seven variants of diPDIs demonstrated that the primary alkyl substituents, particularly the 2‐ethylhexyl group, induce the self‐organized growth of thin films with high crystallinity. This is beneficial for enhancing the device performance of bulk heterojunction (BHJ) systems. The results presented herein reveal the important roles of alkyl side chains as hydrophobic solubilizing auxiliaries or primary determinants in the control of the active layer nanomorphology. This offers a valuable guideline that is essential for developing high‐performance organic semiconductor materials for future practical applications. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1002/chem.202102318 |
| Availability: |
https://doi.org/10.1002/chem.202102318; https://onlinelibrary.wiley.com/doi/pdf/10.1002/chem.202102318; https://onlinelibrary.wiley.com/doi/full-xml/10.1002/chem.202102318 |
| Rights: |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
| Accession Number: |
edsbas.A3E84D90 |
| Database: |
BASE |