Acene-based organic semiconductors for organic light-emitting diodes and perovskite solar cells. Issue 33 (15th August 2018)

• Record Type: Journal Article
• Authors: Pham, Hong Duc; Hu, Hongwei; Wong, Fu-Lung; Lee, Chun-Sing; Chen, Wen-Cheng; Feron, Krishna; Manzhos, Sergei; Wang, Hongxia; Motta, Nunzio; Lam, Yeng Ming; Sonar, Prashant
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 33(2018)
• Page Start: 9017
• Page End: 9029
• Publication Date: 2018-08-15
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8tc01956h
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A series of strong electron-rich small molecules based on acenes were designed and synthesized for application in green/blue organic light-emitting diodes and perovskite solar cells. Abstract : In this work, three novel acene-based organic semiconductors, including 2, 7-bis(trimethylstannyl)naphtho[2, 1- b :6, 5- b ′]dithiophene (TPA-NADT-TPA ), 4, 4′-(anthracene-2, 6-diyl)bis( N, N -bis(4-methoxyphenyl)aniline) (TPA-ANR-TPA ) and N 2, N 2, N 6, N 6 -tetrakis(4-methoxyphenyl)anthracene-2, 6-diamine (DPA-ANR-DPA ), are designed and synthesized for use in organic light-emitting diodes (OLEDs) and perovskite solar cells (PSCs). In OLEDs, devices based onTPA-NADT-TPA, TPA-ANR-TPA andDPA-ANR-DPA showed pure blue, blue green, and green emission, respectively. Also, the maximum brightness of the devices with a turn-on voltage of 3.8 V reached 8682 cd m −2 forTPA-NADT-TPA, 11 180 cd m −2 forTPA-ANR-TPA, and 18 600 cd m −2 forDPA-ANR-DPA . These new materials are also employed as hole transporting materials (HTMs) in inverted PSCs, where they were used without additives. The inverted devices based on these HTMs achieved an overall efficiency of 10.27% forTPA-NADT-TPA, 7.54% forTPA-ANR-TPA, and 6.05% forDPA-ANR-DPA under identical conditions (AM 1.5G and 100 mW cm −2 ). While the PSCs withTPA-NADT-TPA as the HTM achieved the highest efficiency, theDPA-ANR-DPA -based OLED devices showed the brightest emission and efficiency. Based on the obtained promising performance, it is clear that this molecular design presents a new research strategy to develop materials that can be used in multiple types of devices.