A simple fabrication of high efficiency planar perovskite solar cells: controlled film growth with methylammonium iodide and green antisolvent sec-butyl alcohol

Abstract

Perovskite films can be prepared using sec-butyl alcohol (2-BA) by a one-step antisolvent assisted method. However, 2-BA dissolves a necessary perovskite precursor, methylammonium iodide, CH3NH3I, (MAI), which is lost during...

Optimization of inverted CH 3 NH 3 PbI 3 based perovskite solar cells by experimental design

“…Although the peak intensities of I‐4000 and III‐4000 samples were high, an extra PbI 2 peak was observed in approximately 2θ peak at 12.75° for both samples. The lower efficiencies of these samples can be attributed to remaining PbI 2 without conversion to CH 3 NH 3 PbI 3 structure 28,29 . On the other hand, IV‐4000 and V‐4000 are both distinguished with sharp and strong characteristic peaks indicating good crystallinity.…”

“…The lower efficiencies of these samples can be attributed to remaining PbI 2 without conversion to CH 3 NH 3 PbI 3 structure. 28,29 On the other hand, IV-4000 and V-4000 are both distinguished with sharp and strong characteristic peaks indicating good crystallinity.…”

Review of defect engineering in perovskites for photovoltaic application

“…Due to the high density of deep-level traps that trap either electrons or holes and do not escape by thermal recombination, Shockley–Read–Hall (SRH) statistics are a significant loss mechanism that gives the rate of non-radiative recombination process in perovskites. 73,74 Transparent conductive oxide (TCO) makes up the top layer, which aids in the decay of the photo-excited population through contact. This takes place when the excitation density is low.…”

Facet Orientation and Intermediate Phase Regulation via a Green Antisolvent for High‐Performance Perovskite Solar Cells

“…Great progress has been made in this regard in recent years such as applying ester and alcohol. Zhang et al first used sec‐butyl alcohol as the antisolvent and achieved 14.3% PCE in CH 3 NH 3 PbI 3 solar cells and this was further improved by Qiu et al [ 23,24 ] Park et al reported the 17.85% PCE was obtained with 2‐methyl tetrahydrofuran antisolvent treatment in MAPbI 3 ‐based device. [ 25 ] Sec‐pentyl alcohol has been applied to realize a 17% PCE in MAPbBr 3 solar cell.…”