Investigation of the stability and efficiency of MA-doped FAPbBr3 thin films for solar cells

Doumbia, Youssouf; Bouich, Amal; Marı́, B.; Soro, Donafologo

doi:10.1016/j.optmat.2022.113321

Cited by 7 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted that we can observe the characteristic absorption peak at 550 nm for FAPbBr 3 and the mixture, and IEICO-4F exhibits peaks at 750 and 900 nm. It is worth mentioning that the absorption tail (550–800 nm) in FAPbBr 3 could be attributed to the electron–phonon coupling of carriers below the band edge. , Here, both films exhibit very narrow emission bands at 550 nm as well as strong quenching after excitation at 400 nm. These results are consistent with other optical studies on such donor–acceptor materials. , Interestingly, the PL intensity of the FAPbBr 3 /IEICO-4F film is about 17 times lower than that of the FAPbBr 3 alone (Figure b, right), thus indicating significant electron injection at the donor–acceptor interface …”

Section: Resultsmentioning

confidence: 87%

“…It is worth mentioning that the absorption tail (550−800 nm) in FAPbBr 3 could be attributed to the electron−phonon coupling of carriers below the band edge. 48,49 Here, both films exhibit very narrow emission bands at 550 nm as well as strong quenching after excitation at 400 nm. These results are consistent with other optical studies on such donor−acceptor materials.…”

Section: ■ Introductionmentioning

confidence: 88%

See 1 more Smart Citation

Real-Time Tracking of Hot Carrier Injection at the Interface of FAPbBr₃ Perovskite Using Femtosecond Mid-IR Spectroscopy

Nadinov,

Almasabi,

Gutiérrez-Arzaluz

et al. 2023

ACS Cent. Sci.

View full text Add to dashboard Cite

One of the most effective approaches to optimizing the performance of perovskite solar cells is to fully understand the ultrafast carrier dynamics at the interfaces between absorber and transporting layers at both the molecular and atomic levels. Here, the injection dynamics of hot and relaxed charge carriers at the interface between the hybrid perovskite, formamidinium lead bromide (FAPbBr 3 ), and the organic electron acceptor, IEICO-4F, are investigated and deciphered by using femtosecond (fs) midinfrared (IR), transient absorption (TA), and fluorescence spectroscopies. The visible femtosecond-TA measurements reveal the generation of hot carriers and their transition to free carriers in the pure FAPbBr 3 film. Meanwhile, the efficient extraction of hot carriers in the mixed FAPbBr 3 /IEICO-4F film is clearly evidenced by the complete disappearance of their spectral signature. More specifically, the time-resolved results reveal that hot carriers are injected from FAPbBr 3 to IEICO-4F within 150 fs, while the transfer time for the relaxed carriers is about 205 fs. The time-resolved mid-IR experiments also demonstrate the ultrafast formation of two peaks at 2115 and 2233 cm −1 , which can be attributed to the C�N symmetrical and asymmetrical vibrational modes of anionic IEICO-4F, thus providing crystal clear evidence for the electron transfer process between the donor and acceptor units. Moreover, photoluminescence (PL) lifetime measurements reveal an approximately 10-fold decrease in the donor lifetime in the presence of IEICO-4F, thereby confirming the efficient electron injection from the perovskite to the acceptor unit. In addition, the efficient electron injection at the FAPbBr 3 /IEICO-4F interface and its impact on the C�N bond character are experimentally evidenced and align with density functional theory (DFT) calculations. This work offers new insights into the electron injection process at the FAPbBr 3 /IEICO-4F interface, which is crucial for developing efficient optoelectronic devices.

show abstract

Section: Resultsmentioning

confidence: 87%

Section: ■ Introductionmentioning

confidence: 88%

Real-Time Tracking of Hot Carrier Injection at the Interface of FAPbBr₃ Perovskite Using Femtosecond Mid-IR Spectroscopy

Nadinov,

Almasabi,

Gutiérrez-Arzaluz

et al. 2023

ACS Cent. Sci.

View full text Add to dashboard Cite

show abstract

Iron-irradiated methylammonium lead iodide bromide (MAPbI2Br) thin films with enhanced optical and electrical properties for high-efficiency perovskite solar cells

Khan,

Hussain,

Atif

et al. 2024

Discov Sustain

View full text Add to dashboard Cite

Mechanical energy harvesting based on the piezoelectric materials: Recent advances and future perspectives

Pan,

Wu,

Wang

et al. 2024

Chemical Engineering Journal

View full text Add to dashboard Cite

Investigation of the stability and efficiency of MA-doped FAPbBr3 thin films for solar cells

Cited by 7 publications

References 20 publications

Real-Time Tracking of Hot Carrier Injection at the Interface of FAPbBr₃ Perovskite Using Femtosecond Mid-IR Spectroscopy

Real-Time Tracking of Hot Carrier Injection at the Interface of FAPbBr₃ Perovskite Using Femtosecond Mid-IR Spectroscopy

Iron-irradiated methylammonium lead iodide bromide (MAPbI2Br) thin films with enhanced optical and electrical properties for high-efficiency perovskite solar cells

Mechanical energy harvesting based on the piezoelectric materials: Recent advances and future perspectives

Contact Info

Product

Resources

About

Investigation of the stability and efficiency of MA-doped FAPbBr3 thin films for solar cells

Cited by 7 publications

References 20 publications

Real-Time Tracking of Hot Carrier Injection at the Interface of FAPbBr3 Perovskite Using Femtosecond Mid-IR Spectroscopy

Real-Time Tracking of Hot Carrier Injection at the Interface of FAPbBr3 Perovskite Using Femtosecond Mid-IR Spectroscopy

Iron-irradiated methylammonium lead iodide bromide (MAPbI2Br) thin films with enhanced optical and electrical properties for high-efficiency perovskite solar cells

Mechanical energy harvesting based on the piezoelectric materials: Recent advances and future perspectives

Contact Info

Product

Resources

About

Real-Time Tracking of Hot Carrier Injection at the Interface of FAPbBr₃ Perovskite Using Femtosecond Mid-IR Spectroscopy

Real-Time Tracking of Hot Carrier Injection at the Interface of FAPbBr₃ Perovskite Using Femtosecond Mid-IR Spectroscopy