Phenolphthalein: A Potent Small-Molecule Additive for High-Performance and Ambient-Air-Stable FAPbI₃ Perovskite Solar Cells

Elbohy, Hytham1,4; Suzuki, Hiroo1; Nishikawa, Takeshi1; Kyaw, Aung Ko Ko2,3; Hayashi, Yasuhiko1

2024-03-25

10.1021/acsaem.4c00158

ACS APPLIED ENERGY MATERIALS   影响因子和分区

2574-0962

We assessed the impact of phenolphthalein (PHTH) on the efficacy and robustness of FAPbI(3) perovskite solar cells (PSCs) fabricated in ambient air. The experimental methodology entailed the integration of PHTH into the perovskite precursor solution. The optimized concentration of 10 mg/mL significantly elevated the power conversion efficiency (PCE), experiencing an enhancement from 14.62 to 19.9%, while manifesting minimal hysteresis. PHTH-treated PSCs maintained approximately 90% of their initial PCE following a storage duration of 720 h in ambient air at 25(degrees)C with 30% relative humidity. In contrast, control devices exhibited swift degradation, retaining only 30% of their initial value within 720 h under identical environmental conditions. The observed enhancement in the performance of PHTH-treated PSCs is attributed to PHTH acting as an intermolecular bonding agent, facilitating the crystallization of the FAPbI(3) film. This improvement is primarily rooted in the intermolecular interaction between the O-donor Lewis base PHTH and both Pb2+ and FA(+) ions in the FAPbI(3) perovskite. This interaction effectively mitigates trap-assisted recombination processes and expedites the conversion of the less desirable delta-phase to the highly photoactive and stable alpha-phase of FAPbI(3). Overall, these outcomes underscore the potential of black phosphorus as a promising additive for enhancing the performance and stability of PSCs.

phenolphthalein FAPbI(3) perovskite solarcells ambient air fabrication hysteresis stability

SCI ; EI

英语

其他

Japan Society for The Promotion of Science Postdoctoral Fellowship[62150610496]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:001190747500001

AMER CHEMICAL SOC

Web of Science

1.Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan
2.Guangdong Univ, Key Lab Adv Quantum Dot Displays & Lighting, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
4.Damietta Univ, Fac Sci, Phys Dept, New Damietta 34517, Egypt

Elbohy, Hytham,Suzuki, Hiroo,Nishikawa, Takeshi,et al. Phenolphthalein: A Potent Small-Molecule Additive for High-Performance and Ambient-Air-Stable FAPbI₃ Perovskite Solar Cells[J]. ACS APPLIED ENERGY MATERIALS,2024,7(7).

Elbohy, Hytham,Suzuki, Hiroo,Nishikawa, Takeshi,Kyaw, Aung Ko Ko,&Hayashi, Yasuhiko.(2024).Phenolphthalein: A Potent Small-Molecule Additive for High-Performance and Ambient-Air-Stable FAPbI₃ Perovskite Solar Cells.ACS APPLIED ENERGY MATERIALS,7(7).

Elbohy, Hytham,et al."Phenolphthalein: A Potent Small-Molecule Additive for High-Performance and Ambient-Air-Stable FAPbI₃ Perovskite Solar Cells".ACS APPLIED ENERGY MATERIALS 7.7(2024).