Improved Carrier Collection and Hot Electron Extraction Across Perovskite, C60, and TiO2 Interfaces.
Jesús Jiménez-LópezBianka M D PuscherDirk Michael GuldiEmilio José Palomares GilPublished in: Journal of the American Chemical Society (2020)
The use of C60 as an interfacial layer between TiO2 and methylammonium lead iodide perovskite is probed to reduce the current-voltage hysteresis in perovskite solar cells (PSCs) and, in turn, to impact the interfacial carrier injection and recombination processes that limit solar cell efficiencies. Detailed kinetic analyses across different time scales, that is, from the femtoseconds to the seconds, reveal that the charge carrier lifetimes as well as the charge injection and charge recombination dynamics depend largely on the presence or absence of C60. In addition, we corroborate that C60 is applicable in hot carrier PSCs as it is capable of extracting hot carriers generated throughout the early time scales following photoexcitation.
Keyphrases
- solar cells
- perovskite solar cells
- molecular dynamics simulations
- single cell
- dna damage
- dna repair
- room temperature
- ionic liquid
- quantum dots
- ultrasound guided
- high efficiency
- electron transfer
- cell therapy
- sensitive detection
- genome wide
- oxidative stress
- visible light
- gene expression
- dna methylation
- mesenchymal stem cells
- single molecule