Highly fluorescent anthracene derivative as a non-fullerene acceptor in OSCs with small non-radiative energy loss of 0.22 eV and high PCEs of over 13%. Issue 17 (11th April 2019)

• Record Type: Journal Article
• Authors: Yao, Chao; Liu, Bin; Zhu, Yanan; Hong, Ling; Miao, Jingsheng; Hou, Jianhui; He, Feng; Meng, Hong
• Is Part Of: Journal of materials chemistry. Volume 7:Issue 17(2019)
• Page Start: 10212
• Page End: 10216
• Publication Date: 2019-04-11
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c9ta02332a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Herein, we designed and synthesized a highly fluorescent non-fullerene acceptor (ANT-4F) based on an anthracene (ANT) core. Abstract : Herein, we designed and synthesized a highly fluorescent non-fullerene acceptor (ANT-4F) based on an anthracene (ANT) core. OSCs based on ANT-4F/PBDB-TF exhibited a significantly decreased V loss, non-rad of 0.22 V (calculated from high EQEEL = 1.7 × 10 −4 ). Simultaneously, high charge-transfer state energy ( E CT = 1.54 eV) was obtained. Compared with OSCs based on IT-4F/PBDB-TF, a reduced V loss, non-rad and higher E CT concurrently contributed to an increased V oc of 0.93 V. Consequently, despite the lower J sc of 19.0 mA cm −2, an overall high PCE of 13.1% can be obtained. This work exemplified the great potential for highly fluorescent NFSAs in decreasing V loss, non-rad and improving PCEs.