Highly flexible, high-performance perovskite solar cells with adhesion promoted AuCl3-doped graphene electrodes. Issue 40 (9th October 2017)

• Record Type: Journal Article
• Authors: Heo, Jin Hyuck; Shin, Dong Hee; Jang, Min Hyeok; Lee, Myung Lae; Kang, Man Gu; Im, Sang Hyuk
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 40(2017)
• Page Start: 21146
• Page End: 21152
• Publication Date: 2017-10-09
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta06465a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Super flexible TCO-free FAPbI3− x Br x planar type inverted perovskite solar cells with a 17.9% power conversion efficiency under 1 sun conditions were demonstrated by introducing an APTES (3-aminopropyl triethoxysilane) adhesion promoter between a PET flexible substrate and a AuCl3 -doped single-layer graphene transparent electrode. Abstract : Super flexible TCO-free FAPbI3− x Br x planar type inverted perovskite solar cells with a 17.9% power conversion efficiency under 1 sun conditions were demonstrated by introducing an APTES (3-aminopropyl triethoxysilane) adhesion promoter between a PET flexible substrate and a AuCl3 -doped single-layer graphene transparent electrode (TCE). Due to the formation of covalent bonds by the APTES inter-layer, the AuCl3 -GR/APTES/PET substrate had excellent flexibility, whereas the AuCl3 -GR/PET substrate and the ITO/PET substrate had significant degradation of the sheet resistance after a bending test due to the break-off or delamination of AuCl3 -GR from the PET substrate and the cracking of ITO. Accordingly, the perovskite solar cells constructed on the AuCl3 -GR/APTES/PET TCE substrate exhibited excellent bending stability and they maintained their PCE at over 90% of the initial value after 100 bending cycles at R ≥ 4 mm.