Triarylamine-BODIPY derivatives: A promising building block as hole transporting materials for efficient perovskite solar cells. (December 2019)

• Record Type: Journal Article
• Authors: Ortiz, Alejandro
• Is Part Of: Dyes and pigments. Volume 171(2019)
• Publication Date: 2019-12
• Subjects: BODIPY -- Triphenylamine -- Electron transfer -- Acceptor -- Donor; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2019.107690
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: In this work, the syntheses and characterization of four new TPA-BODIPY dyads as hole-transporting layers (HTLs) are reported. The photophysical and electrochemical properties of the dyadsBTPA-I, BTPA-II, BTPA-III andBTPA-IV are investigated in solution and compared with the reference compoundsBDP, BDP1, BDP2, TPA, A (triphenylamine) andB (4, 4′-dimethoxitriphenylamine). The TPA-BODIPY derivatives strongly absorb visible light and upon photoexcitation at the BODIPY unit, these dyads undergo photoinduced electron transfer to form the corresponding charge-separated species, which was confirmed by solvatochromic measures of fluorescence. Their redox potentials and photophysical properties suggested that the newBTPAs derivatives showed a better ionization potential that free triphenylamines, which makes them promising candidates to use as hole transport layers (HTLs). Highlights: A facile synthetic route for BODIPY-Triarylamine dyes with non-conventional electronic and optical properties. The BODIPY-Triarylamine dyes undergo photoinduced electron transfer to form the corresponding charge-separated species. The new synthesized compounds appear as promising candidates to use as hole transport layers (HTLs).