Boosting the performance and stability of quasi-two-dimensional tin-based perovskite solar cells using the formamidinium thiocyanate additive

Abstract

Highly efficient tin-based perovskite solar cells are prepared by introducing the formamidinium thiocyanate additive into quasi-two-dimensional tin-based perovskites.

Efficient and Stable FASnI3 Perovskite Solar Cells with Effective Interface Modulation by Low‐Dimensional Perovskite Layer

“…[51][52][53] In this work, the device stabilityi se valuated with al ight-soakingt est in ambient air under continuous simulated solar AM 1.5 Gi llumination, resulting in as teady sample temperatureo fa pproximately 50 8C ( Figure 7b). Considerable efforts have been made to improve the devices tabilityo ft in and lead-free PSCs.…”

“…Considerable efforts have been made to improve the devices tabilityo ft in and lead-free PSCs. [51][52][53] In this work, the device stabilityi se valuated with al ight-soakingt est in ambient air under continuous simulated solar AM 1.5 Gi llumination, resulting in as teady sample temperatureo fa pproximately 50 8C ( Figure 7b). The controlF ASnI 3 device withoutP EABr treatment showedasharp degradation and failed after 140 h light soaking.…”

A Two‐Step Modified Sequential Deposition Method‐based Pb‐Free (CH3NH3)3Sb2I9 Perovskite with Improved Open Circuit Voltage and Performance

“…[15] Therefore, Snaith and co-workers have investigated the optoelectronic properties of CH 3 NH 3 SnI 3 perovskite and employed it as light absorber. The developed PSCs exhibited an interesting PCE of 6 % [15] which further improved to 7.13 % by Li et al [16] In another work, Liu et al [17] have employed FASnI 3 (FA = NH 2 CHNH 2 ) perovskite and obtained a PCE of 7.94 % which was further jumped to 8.17 % by Kim et al [18] Further, Song et al [19] and Heo et al [20] also used another Pb-free CsSnI 3 perovskite and achieved the PCE of 3.83 % and 4.31 % respectively. Gupta et al investigated the optoelectronic properties of CsSnBr 3 and employed as light absorber with the introduction of SnF 2 additive and obtained a PCE of 2.1 %.…”

Reducing Agents for Improving the Stability of Sn‐based Perovskite Solar Cells

“…fabricated quasi‐2D Sn‐based PSC with an efficiency of 8.17% via introducing 5 mol% formamidinium thiocyanate (FASCN). The strong chemical interactions between FASCN and the tin component can improve the crystallographic and morphological quality of the perovskite film, which exerts a remarkable impact on the device stability . Meng et al.…”