Reduced graphene oxide (rGO) grafted zinc stannate (Zn₂SnO₄) nanofiber scaffolds for highly efficient mixed-halide perovskite solar cells

Abstract

Please do not adjust margins Please do not adjust margins concentration of GO in precursor solution. It is also noted that, as GO concentration increases, the diameter of ZSO nanofibers decreases from 350nm to 250nm. On the other hand, during calcination process of GO-ZSO-PVP composite at 700°C GO transformed to rGO and rGO-ZSO scaffolds has been formed.

Two‐Dimensional Materials for Halide Perovskite‐Based Optoelectronic Devices

“…c) Schematic representation of the energy band diagram of FTO/bl‐ZSO/rGO‐ZSO 0.7 /(FAPbI 3 ) 0.85 (MAPbBr 3 ) 0.15 /PTAA/Au. Reproduced with permission . Copyright 2016, Royal Society of Chemistry.…”

“…The incorporation of graphene into mp SrTiO 3 ETL accelerated electron transfer as well as weakened charge recombination, providing the HPSC with a PCE of 10.49%. Very recently, Hong et al synthesized rGO grafted ternary metal oxide zinc stannate (Zn 2 SnO 4 ) nanofiber scaffolds (rGO‐ZSO) by facile electrospinning technique . They applied the rGO‐ZSO nanofibers with different rGO contents as ETLs for HPSCs (Figure c).…”

Electron‐Transport Materials in Perovskite Solar Cells

“…The only shortcoming in this work was the low PCE of 13.34% for the PSCs, which may be due to the presence of interfacial defects. Reduced graphene oxide (rGO) grafted on highly porous ZSO nanofiber scaffolds were synthesized in a single step, and the PCE of PSCs was increased to 17.89% for the FTO/Bl‐ZSO/rGO–ZSO–(FAPbI 3 ) 0.85 (MAPbBr 3 ) 0.15 /PTAA/Au device configuration . The grafting of rGO on ZSO scaffolds facilitates efficient electron injection from the perovskite to ZSO.…”

Secondary Hydrothermally Processed Engineered Titanium Dioxide Nanostructures for Efficient Perovskite Solar Cells

“…We also used highly porousZ n 2 SnO 4 nanofiber scaffolds to obtain perovskite solar cells with 7.38 %e fficiency. [27,28] Ac arbon-based modified hole-extraction layerw as also used for perovskite solar cells for PCEs > 13 %. [29] Af ew reports on rutile TiO 2 nanorods [6,30] and anatase nanotubes are also available.…”

“…A few reports are also available for Al 2 O 3 ‐, NiO x ‐, ZnO‐, and graphene/TiO 2 ‐based perovskite solar cells. We also used highly porous Zn 2 SnO 4 nanofiber scaffolds to obtain perovskite solar cells with 7.38 % efficiency . A carbon‐based modified hole‐extraction layer was also used for perovskite solar cells for PCEs>13 % .…”