Cetrimonium bromide and potassium thiocyanate assisted post-vapor treatment approach to enhance power conversion efficiency and stability of FAPbI₃ perovskite solar cells

Abstract

Vapor treatment approach to enhance the power conversion efficiency and stability of FAPbI3 based perovskite solar cell.

Mixed-Dimensional Engineering to Generate a Desirable 2D/3D Heterostructure Perovskite Layer to Record Stable and Efficient Carbon-Based Perovskite Solar Cells

“…All perovskite films were discovered to have a PL peak at about 810 nm, which corresponds to a band gap of 1.53 eV, in line with earlier reports for FAPbI 3 material. , It appears that the TBACl treatment reduced nonradiative recombination in the perovskite film because the PL intensity of the 2D/3D FAPbI 3 layers was greater than that of the 3D FAPbI 3 layer film. The reduced nonradiative recombination in the treated FAPbI 3 layers further points to a surface defect passivation and GBs passivation (see Figure ) following the TBACl treatment. − It is worth noting that in the 2D/3D perovskites, the PL peak shifts to a lower wavelength, typically from 812 nm in 3D perovskite to 806 nm in 2D/3D-205 perovskite. This phenomenon refers to the reduction of trap states in 2D/3D perovskite film. , By increasing the temperature of the TBACl treatment step to 220 °C, the mentioned PL blueshift disappears, which indicates the weakened passivation effects of TBACl treatment at 220 °C.…”

Enhancing the stability and efficiency of carbon-based perovskite solar cell performance with ZrO2-decorated rGO nanosheets in a mesoporous TiO2 electron-transport layer

“…As can be seen, all the perovskite layers showed the same absorbance ability and the same absorbance edge position of 816 nm. 35,36 Fig. S6 † shows the PL spectra of different perovskite layers fabricated on ETLs doped with 0-6% rGO/ZrO 2 material.…”

“…As can be seen, all the perovskite layers showed the same absorbance ability and the same absorbance edge position of 816 nm. 35,36…”

Additive engineering with sodium azide material for efficient carbon-based perovskite solar cells

“…4 Subsequently, significant efficiency enhancements are attained by meticulously developing materials, regulating perovskite crystallization, preventing charge recombination, speeding up carrier migration and enhancing interfacial engineering. [5][6][7][8][9][10][11] The most common electrode materials in metal-based perovskite solar cells are typically gold, silver, or other highly conductive metals, but the formation of this metal layer requires a vacuum environment and requires a lot of energy, making it difficult to manufacture and market PSCs on a large scale. 10,12,13 Carbon compounds with a work function of À5.0 eV have the potential to replace gold as the black electrode of a perovskite solar cell, which has a work function of À5.1 eV.…”