Surface engineering with oxidized Ti3C2Tx MXene enables efficient and stable p-i-n-structured CsPbI3 perovskite solar cells

Recent progress in perovskite solar cells: material science

“…Recently, Sun et al [138] designed a stable CsPbI 3 /Cs 1−x DMA x PbI 3 bulk hetero-junction, raising the PCE to 20.32%. Apart from DMAI, additives such as urea-ammonium thiocyanate [139], oxidized Ti 3 C 2 T x MXene [140], and hydrazide derivatives [141] are well studied.…”

Recent progress in use of MXene in perovskite solar cells: for interfacial modification, work-function tuning and additive engineering

“…This surface tuning not only provided a protection against moisture for the perovskite layer, but also improved the charge separation at the perovskite/ETL interface due to a strong electric field, achieving an efficiency of 19.69 percent for 0.096 cm 2 minimodules. 125…”

“…The findings showed that titanium carbide QDs can efficiently lower the defect concentration of photoactive films, while titanium carbide nanosheets can expand the ETL's electron mobility; hence the combined effect of both led to an increase of the photoconversion efficiency from 12% to 17% with diminished hysteresis. 125 Device configuration and band alignment of heterojunctions for PSCs using a TiO 2 /SnO 2 conductive network with Ti 3 C 2 is shown in Fig. 5e in deionized (DI) water (30 mL).…”

“…This surface tuning not only provided a protection against moisture for the perovskite layer, but also improved the charge separation at the perovskite/ ETL interface due to a strong electric field, achieving an efficiency of 19.69 percent for 0.096 cm 2 minimodules. 125 Recently, in June 2022, Dongfang and his colleagues 126 reported the use of fluorine-functionalized MXene QDs as a surface passivator to increase the efficiency of a CsPbI 3 perovskite. They concluded that fluorine-doped MXene sheets provide a barrier against moisture sensitivity, improve charge transfer, and further reduce nano-radiative recombination, resulting in a 20.44 percent enhancement in efficiency.…”

Argon-Assisted Spray-Coating Induced Efficient and Stable MAPbI3 Perovskite Solar Cells

“…Many efforts to solve the problem have been proposed, such as vapor deposition, blade-coating, inkjet printing, spray-coating, slot-die-coating, and screen-coating . Because of its low cost, high throughput, and simple operation, , the spraying method is a potential technology for the practical application of PSCs on the large scale.…”