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• W3048844941 abstract "Organic-inorganic hybrid perovskites have attracted much attention due to their high color purity, low material cost, ease of tuning of bandgap, and flexible manufacture. They are considered to be a new generation of promising light-emitting materials. In this paper, an appropriate doping of polyethylene oxide (PEO) into the perovskite precursor solution acquires the high quality and low defect density of perovskite film. In addition, the passivation of perovskite grain boundaries by PEO are investigated. The perovskite light-emitting diode (PeLED) is fabricated with a structure of <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>I</mml:mi> <mml:mi mathvariant=normal>T</mml:mi> <mml:mi mathvariant=normal>O</mml:mi> </mml:mrow> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mo>/</mml:mo> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>P</mml:mi> <mml:mi mathvariant=normal>E</mml:mi> <mml:mi mathvariant=normal>D</mml:mi> <mml:mi mathvariant=normal>O</mml:mi> <mml:mi mathvariant=normal>T</mml:mi> </mml:mrow> </mml:mrow> <mml:mo>:</mml:mo> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>P</mml:mi> <mml:mi mathvariant=normal>S</mml:mi> <mml:mi mathvariant=normal>S</mml:mi> </mml:mrow> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mo>/</mml:mo> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>M</mml:mi> <mml:mi mathvariant=normal>A</mml:mi> <mml:mi mathvariant=normal>P</mml:mi> <mml:mi mathvariant=normal>b</mml:mi> <mml:mi mathvariant=normal>B</mml:mi> </mml:mrow> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:msub> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>r</mml:mi> </mml:mrow> </mml:mrow> <mml:mn>3</mml:mn> </mml:msub> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mo>/</mml:mo> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>T</mml:mi> <mml:mi mathvariant=normal>P</mml:mi> <mml:mi mathvariant=normal>B</mml:mi> <mml:mi mathvariant=normal>i</mml:mi> </mml:mrow> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mo>/</mml:mo> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>L</mml:mi> <mml:mi mathvariant=normal>i</mml:mi> <mml:mi mathvariant=normal>F</mml:mi> </mml:mrow> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mo>/</mml:mo> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>A</mml:mi> <mml:mi mathvariant=normal>g</mml:mi> </mml:mrow> </mml:mrow> </mml:math> . As the doping concentration of PEO is at 10 mg/ml, <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>M</mml:mi> <mml:mi mathvariant=normal>A</mml:mi> <mml:mi mathvariant=normal>P</mml:mi> <mml:mi mathvariant=normal>b</mml:mi> <mml:mi mathvariant=normal>B</mml:mi> </mml:mrow> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:msub> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>r</mml:mi> </mml:mrow> </mml:mrow> <mml:mn>3</mml:mn> </mml:msub> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mtext>-</mml:mtext> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>P</mml:mi> <mml:mi mathvariant=normal>E</mml:mi> <mml:mi mathvariant=normal>O</mml:mi> </mml:mrow> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mtext>-</mml:mtext> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>b</mml:mi> <mml:mi mathvariant=normal>a</mml:mi> <mml:mi mathvariant=normal>s</mml:mi> <mml:mi mathvariant=normal>e</mml:mi> <mml:mi mathvariant=normal>d</mml:mi> </mml:mrow> </mml:mrow> </mml:math> PeLEDs exhibit a maximum luminance of <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mn>4665.1</mml:mn> </mml:mrow> <mml:mspace width=thickmathspace /> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>c</mml:mi> <mml:mi mathvariant=normal>d</mml:mi> </mml:mrow> </mml:mrow> <mml:mspace width=thickmathspace /> <mml:mrow class=MJX-TeXAtom-ORD> <mml:msup> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>m</mml:mi> </mml:mrow> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mo>−<!-- − --></mml:mo> <mml:mn>2</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> , while their external quantum efficiency (EQE) and current efficiency (CE) are also maximized to be 1.355% and <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mn>5.556</mml:mn> </mml:mrow> <mml:mspace width=thickmathspace /> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>c</mml:mi> <mml:mi mathvariant=normal>d</mml:mi> </mml:mrow> </mml:mrow> <mml:mspace width=thickmathspace /> <mml:mrow class=MJX-TeXAtom-ORD> <mml:msup> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>A</mml:mi> </mml:mrow> </mml:mrow> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mo>−<!-- − --></mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> , respectively." @default.
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• W3048844941 date "2020-09-10" @default.
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• W3048844941 title "Enhancing the electroluminescence of perovskite light-emitting diodes by optimizing the morphology of perovskite film to suppress leakage current" @default.
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