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Low-cost air-stable perovskite solar cells by incorporating inorganic materials

Heshmati, N ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1039/d0nj04619a
  3. Publisher: Royal Society of Chemistry , 2021
  4. Abstract:
  5. Herein, we demonstrate a new fabrication strategy for low-cost and stable-operation perovskite solar cells (PSCs) suitable for commercialization. This is performed by fabrication of the device under ambient conditions using a Cs0.05(MA0.17FA0.83)0.95Pb(Br0.17I0.83)3 formulation as the mixed cation and halide (MCH) perovskite and CuInS2 (CIS) as the inorganic hole transporting layer. The deposited MCH perovskite with uniform, compact and smooth microstructure containing equiaxed large grains showed excellent thermal and structural stability under intense conditions at 85 °C for 2 h in humid air (i.e., 45% relative humidity). Moreover, it had higher phosphorescence emission, absorption and bandgap energy than the conventional MAPbI3 due to efficient conversion of PbI2 to the perovskite compound, as further confirmed by XRD analysis. Photovoltaic measurements under operational conditions revealed that the MCH-based PSC showed a 27% higher photoconversion efficiency compared with the control device composed of MAPbI3 caused by less charge recombination. The CIS-based MCH device aged for 30 days at 25 °C and 40% humidity retained 91% of the maximum efficiency with a low standard deviation of all photovoltaic parameters, indicating excellent potential for industrialization. This journal is © 2021 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique
  6. Keywords:
  7. Conversion efficiency ; Copper compounds ; Costs ; Indium compounds ; Layered semiconductors ; Lead compounds ; Perovskite ; Stability ; Textures ; Charge recombinations ; Fabrication strategies ; Hole transporting layers ; Operational conditions ; Photoconversion efficiency ; Photovoltaic measurements ; Photovoltaic parameters ; Structural stabilities ; Perovskite solar cells ; Halide ; Inorganic compound ; Perovskite ; Absorption ; Absorption spectroscopy ; Ambient air ; Controlled study ; Cost ; Humidity ; Nanofabrication ; Particle size ; Phosphorescence ; Photoluminescence ; Priority journal ; Reduction (chemistry) ; Scanning electron microscopy ; Thermostability ; Thickness ; X ray diffraction
  8. Source: New Journal of Chemistry ; Volume 45, Issue 2 , 2021 , Pages 788-795 ; 11440546 (ISSN)
  9. URL: https://pubs.rsc.org/en/content/articlelanding/2021/nj/d0nj04619a