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Novel design for inverted all-perovskite bilayer solar cells with 24.83% efficiency – pv magazine International


A world analysis crew has developed a brand new photo voltaic cell design. Through the use of a high absorber composed of methylammonium lead iodide (MAPbI3), a lead-halide perovskite, and a backside absorber composed of FA0.5MA0.5Pb0.5Sn0.5I3, a perovskite materials, the cell maximizes of sunshine absorption within the broad spectrum.

A world analysis crew has developed a brand new design for inverted all-perovskite bilayer photo voltaic cells. The design contains bilayer heterojunctions with totally different perovskite supplies, which permit for enhanced absorption in lots of areas of the sunshine spectrum.

They use it a high absorber primarily based on a kind of lead-halide perovskite often called methylammonium lead iodide (MAPbI3) and a backside absorber product of a perovskite materials often called FA0.5M.A0.5Pb0.5Sn0.5I3. Each absorbers have vitality bandgaps of 1.55 eV and 1.25 eV, respectively.

Additionally utilized by researchers SCAPS-1D photo voltaic cell capability sFOR probably the most halfwhich is a simulation instrument for thin-film photo voltaic cells developed by the College of Ghent in Belgium, to simulate a number of cell designs.

“By various the parameters of the absorber layers and the work-function of the contacts now we have proven higher efficiency for the proposed system,” the researchers mentioned. “Moreover, it has been described that the temperature of the cell performs an essential position within the performance of this bilayer cell.”

They mentioned that the thickness of the 2 layers has a major impact on the efficiency of the bilayer cell and the thickness of the vast bandgap absorber layer must be thinner than the slender bandgap.

“The very best thickness for MAPbI3 and FA0.5M.A0.5Pb0.5Sn0.5I3 are 100 nm and 600 nm, respectively,” they mentioned.

The scientists designed the photo voltaic cell with a substrate product of fluorine-doped tin oxide (FTO), a hole-transporting materials (HTM) primarily based on PEDOT:PSS, the 2 absorbers, an electron acceptor product of phenyl-C61-butyric acid methyl ester (PCBM), and a steel contact product of aluminum (Al).

By way of a sequence of simulations performed underneath commonplace lighting situations, the analysis crew discovered that the cell can obtain an influence conversion effectivity of 24.83%, an open- circuit voltage of 0.9 V, a short-circuit present density of 34.76 mA/cm.2and a fill issue of 79.4%.

The scientists launched the brand new cell know-how in “Efficiency evaluation of a extremely environment friendly inverted all-perovskite bilayer photo voltaic cell,” not too long ago printed in Scientific stories. The analysis crew contains lecturers from the College of Tabriz in Iran and Bilkent College in Turkey.

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