Small molecules based difluoroquinoxaline for organic solar cells. Issue 1 (13th October 2021)

• Record Type: Journal Article
• Authors: Kong, MinSung; Lee, Jihoon; Song, Suhee; Park, Seong Soo; Lee, Won-Ki; Kim, Jin Young; Park, Sung Heum; Jin, Youngeup
• Is Part Of: Molecular crystals and liquid crystals. Volume 728:Issue 1(2022)
• Page Start: 45
• Page End: 51
• Publication Date: 2021-10-13
• Subjects: Fluorine atom -- solar cells -- synthesis; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2021.1946976
• Languages: English
• ISSNs: 1542-1406

Abstract

Abstract: A new accepter unit, 2, 3-didodecyl-6, 7-difluoroquinoxaline, was prepared and utilized for the synthesis of electron acceptor–donor–acceptor materials for organic solar cells. 2, 3-Didodecyl-6, 7-difluoroquinoxaline unit was designed to introduce electron-withdrawing F atom in quinoxaline unit to improve deeper HOMO energy levels and higher V OC of the materials. The thienothiophene in conjugated materials has more excellent electron-donating ability to decrease of HOMO energy levels, which improves efficiency by increasing the V OC values.