New ferrocenyl-containing organic hole-transporting materials for perovskite solar cells in regular (n-i-p) and inverted (p-i-n) architectures. Issue 1 (2nd January 2019)

• Record Type: Journal Article
• Authors: Jia, Jingwen; Duan, Liangsheng; Chen, Yu; Zong, Xueping; Sun, Zhe; Wu, Quanping; Xue, Song
• Is Part Of: RSC advances. Volume 9:Issue 1(2019)
• Page Start: 216
• Page End: 223
• Publication Date: 2019-01-02
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra08946a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : New ferrocene-containing organic HTMs for fabricating perovskite solar cells. Abstract : Three triphenylamine derivatives containing ferrocenyl groups (JW6, JW7 andJW8 ) were synthesized by facile syntheses. Their HOMO levels match the valence band energy of CH3 NH3 PbI3 . The introduction of ferrocenyl was aimed to obtain hole transporting materials with high mobility for perovskite solar cells.JW7 shows higher hole mobility (4.2 × 10 −4 cm 2 V −1 s −1 ) thanJW6 (1.3 × 10 −4 cm 2 V −1 s −1 ) andJW8 (1.5 × 10 −4 cm 2 V −1 s −1 ). Their film-forming properties are affected by their molecule structures. The methoxyl and N, N -dimethyl terminal substituents ofJW7 andJW8 are beneficial for having better solubility thanJW6 . The regular mesoporous TiO2 -based perovskite solar cells (n-i-p) and the inverted planar heterojunction perovskite solar cells (p-i-n) fabricated usingJW7 show the highest power conversion efficiency of 9.36% and 11.43% under 100 mW cm −2 AM1.5G solar illumination. For p-i-n cells, the standard HTM PEDOT-based cell reaches an efficiency of 12.86% under the same conditions.