Green-solvent-processed formamidinium-based perovskite solar cells with uniform grain growth and strengthened interfacial contact via a nanostructured tin oxide layer

Abstract

The green-solvent-processed perovskite solar cells (PSCs) have reached an efficiency of 20%, showing a great promise in safe industrial production. However, the nucleation process in green-solvent-based deposition is rarely optimized,...

Eco‐friendly perovskite solar cells: From materials design to device processing and recycling

“…(A) Environmental health & safety assessment of different solvents in perovskite solar cell (PVSC) fabrication 110 . (B) Schematic of the fabrication procedures of the green‐solvent process of the perovskite based on SnO 2 ‐nanorods (NRs) and SnO 2 ‐nanoparticles (NPs) substrates, respectively 111 . Reproduced from permission, copyright 2023, the Royal Society of Chemistry.…”

“…The form of TEP-PbI 2 intermediate phase via the coordination effects between P O and Pb 2+ enables dense and uniform perovskite films (Figure 3B). 111,114 Recently, molten salt methylammonium acetate (MAAc) has been developed as an ideal green solvent to realize perovskites with high quality and superior stability due to its strong interaction with perovskites via the Ac À and Pb 2+ . 115 For partial solvent replacement, Tang et al substitute DMF with non-toxic N,N-diethylformamide (DEF) to form DEF/DMSO mixed solvent.…”

“…110 (B) Schematic of the fabrication procedures of the green-solvent process of the perovskite based on SnO 2 -nanorods (NRs) and SnO 2nanoparticles (NPs) substrates, respectively. 111 Reproduced from permission, copyright 2023, the Royal Society of Chemistry. (C) Chemical structures (left) and (D) graphical representation showing both the dielectric constant and donicity of several solvents analyzed in the study.…”

Circular economy for perovskite solar cells – drivers, progress and challenges

“…However, Wu et al have successfully produced high efficiency formamidinium based perovskite cells reaching PCEs of 22.4% using the green solvent triethyl phosphate. 299,300 Many factors influence PCE and not all labs are able to achieve record efficiencies even with solvents such as DMF. Doolin et al demonstrated that when a fair comparison to evaluate their green solvent systems side by side against DMF was made, comparable cell efficiencies were achieved.…”

Rational design of the synergistic effect with lead iodide as the link for improving the efficiency of carbon-based perovskite solar cells

“…17 Other studies have also demonstrated the efficacy of the Ostwald ripening process in enhancing the optoelectronic properties of perovskite films. 18,19 However, it is difficult to accurately control the secondary growth of Ostwald process-induced films. In other words, uncontrolled Ostwald processes may be accompanied by the production of residual PbI 2 , 20 which could hinder carrier transmission and further degrade device performance.…”