Scientists in the UK have used aluminum oxide in perovskiet solar cells to reach lifespan of more than 1,300 hours at the bottom of standards-based heat and moisture tests. Their analysis showed that a reference cell based on conjugated polyelectrolytes broken down in a tenth of the time.
Scientists in the United Kingdom have used aluminum oxide oxide (Al₂O₃) nanoparticles (NPs) as a interface modifier at the Hole Transport Layer (HTL) to increase the life of perovskite solar cells.
The researchers said that the nanoparticles aluminum oxide have considerably improved the lifespan and stability, as revealed in tests under extreme heat and humidity that replicates real conditions. “Our work offers new insights into an important but hidden role played by Al2O3 NPs in perovskiet solar cells such as a nanoenginable intermediate layer that the structure above Templet, “they explained.
“After stress tests that have been performed for more than 2000 hours, we show that the integration of aluminum oxide and a interface modifier plays an important role in both iodine caving, compositive homogenization that results in T80 lifetime of more than 1,300 hours,” Hashini Perera, tells, tells, tells, tells, tells, telling the exam, telling the exam, tells, PV Magazine. “For comparison: the more commonly used polymer -electrolyt results in devices that break down in 1/10 of this time.”
In the experiment, the group made an HTL made of nickel (II) oxide (niox) and phosphonic acid called methyl substiTuted carbazole (me-4pacz) with PFN – BR and all2O3. It turned out that the effect of the aluminum oxide -nannemids on the buried interface was to homogenize the electrical and electronic properties of the Perovskiet. It According to Perera, the stability of the device in heating in environmental conditions also has “positive”.
“The use of aluminum oxide nanoparticles leads to efficient clearance of iodine, improved bulk electrical and surface-electronic homogeneity in fresh films that are preserved, even when the films are broken down, and the formation of 2D perovskites that act as a barrier against moisture-declared destroyed destroyed.
De wetenschappers vergeleken de stabiliteit onder ISOS-D2I en ISOS-D2-omstandigheden bij 65 ° C. De stacks die vergelijken waren, waren als volgt: Glass-substraat gecoat met indiumtinoxide (ITO), een methyl-gesubstitueerde carbazole (ME-4Pacz) gatlaag, dan AL2O3 of PFN-BR, de perovskiet-absorber, de Perovskite-Absorber, the Perovskiet-abserminfullerie (C60). Elektrontransport layer (ETL)A buffer layer of Bathocuprino (BCP) and copper electrodes.
The group said it used a perovskiet -absorbers composition, known as 0.05FA0.79MA0.16PB (I0.83BR0.17) 3 with a band gap of 1.63 EV. Device characterization and EQE measurements were completed, including UV-fish measurements, electron microscopic imaging and grain size analysis, Kelvine-Sondek power microscopy (KPFM), C-AFM measurements, plus giwaxs and XPS measurements
The findings are detailed in “Improved stability and electronic homogeneity in perovskite solar cells buried via a nanoengineer oxide -interlayer“Recently published in Ees Solar. “This work points to the importance of homogenizing the Opto -electronic properties of the perovskite to improve the stability of this exciting technology and carefully customized oxide -nannemids can help,” Perera said.
The research was completed by scientists from the University of Surrey, the University of Sheffield and the UK National Physical Laboratory.
Coming research would include the strategy on larger devices. “We believe that our approach has a favorable impact on a number of perovskietabsorbers, including both wide bandgap and narrow bandgap compositions, and device architectures ranging from single to multijunction architectures,” Perera said.
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