Swedish scientists have proposed using gold polyiodide compounds in monolithic perovskite photo voltaic cells. They constructed a lead-free system that achieved an effectivity of 1.50%, an open-circuit voltage of 0.780 V, a short-circuit present of 0.134 mA/cm2, and a fill issue at 0.453.
Researchers on the Analysis Institute of Sweden (RISE) have proposed using gold polyiodide compounds as energetic layers in monolithic photo voltaic cells.
“We purpose to construct photo voltaic cells primarily based on non-toxic gold, which opens up different utility areas, akin to shopper electronics, versatile electronics and indoor functions, the place worth shouldn’t be all the time essentially the most vital issue,” researcher . Allan Starkholm instructed pv journal. “These areas don’t essentially require excessive effectivity. Above all, the concepts behind these new supplies can be utilized as ideas for typical perovskites in addition to for potential enhancements in effectivity.
The analysis workforce proposed to make use of, particularly, two pseudo-2D gold polyiodide compounds referred to as [DodMe2S][AuI4][I3] and [Et3S][AuI4][I5]which give optical bandgaps of 1.40 and 1.25 eV, respectively.
“These slim bandgaps are just like some not too long ago reported gold perovskite-type compounds and point out suitability for photovoltaics,” they mentioned.
Lecturers use polyiodide ionic liquids (PIL) as a precursor resolution for depositing compounds as skinny movies. They are saying that prime vacuum and excessive temperatures must be averted when assembling solar-cell gadgets involving the aforementioned compounds.
They constructed lead-free photo voltaic cells primarily based on two compounds with an electron donor created from carbon, a tin oxide (FTO) substrate, titanium oxide (TiO2) films, a zirconium dioxide (ZrO2) interlayer, and a nickel(II) oxide gap transporting layer. They famous that these photo voltaic cells don’t comprise gap transporting supplies (HTMs) and require the addition of a counter electrode to enhance efficiency parameters.
Examined beneath normal lighting circumstances, the champion photo voltaic cell created by scientists achieved an influence conversion effectivity of 1.50%, an open-circuit voltage of 0.780 V, a short-circuit present of 0.134 mA/cm2, and a fill issue of 0.453.
“Our work does probably not embody a deep price evaluation however one of many uncooked supplies is predicated on gold, which is comparatively costly in comparison with the lead utilized in typical perovskite photo voltaic cells,” mentioned Starkholm, when requested about at the price of the cell. . “It additionally will depend on the realm of utility, however it’s in all probability dearer than regular.”
Scientists describe new perovskite cell tech in “Gold Polyiodide Hybrid Perovskite Photo voltaic Cells,” which was not too long ago printed in ACS Publications.
“The current outcomes present a potential route in direction of new design methods for lead-free, organic-inorganic complicated metal-halide/polyiodide supplies and the potential of assembling steady monolithic solar-cell gadgets primarily based on supplies which are typically thought of to be very delicate to harsh processing circumstances,” mentioned the scientists.
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