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  • Wiley  (2)
  • Yang, Yang  (2)
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  • Wiley  (2)
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  • 1
    Online Resource
    Online Resource
    Interfacial Engineering Based on Polyethylene Glycol and Cuprous Thiocyanate Layers for Efficient and Stable Perovskite Solar Cells
    Wiley ; 2022
    In:  Advanced Materials Interfaces Vol. 9, No. 31 ( 2022-11)
    Details
    In: Advanced Materials Interfaces, Wiley, Vol. 9, No. 31 ( 2022-11)
    Abstract: Cuprous thiocyanate (CuSCN) is an ideal inorganic hole transport material for perovskite solar cells (PSCs). However, polar solvents for film deposition of CuSCN run a risk of destroying the perovskite light‐absorbing layer. There is also a poor contact between perovskites and CuSCN, restricting photovoltaic performance and operational stability of PSCs. In this work, a polyethylene glycol (PEG‐10000) is employed as an interlayer to effectively overcome the obstacles mentioned above. By introducing this ultra‐thin layer at the interface between (MAFA)Pb(IBr) 3 and CuSCN, the power conversion efficiency (PCE) and operational stability of the related PSCs are both greatly improved. The results confirm that the insertion of PEG cannot only prevent the destruction of bulk perovskites but also reduce the traps/defects at the interface through its strong chemical bonding with undercoordinated ions, which significantly lowers the potential barrier between the perovskite and the hole transport layer. An improved PCE of 19.2% can be achieved in the CuSCN‐based PSCs by interface engineering with PEG. The introduction of PEG can also protect the perovskite film from moisture attack, and greatly enhance device stability. The PEG‐treated PSCs without encapsulation maintain more than 90% of the initial efficiency after 1860 h in the ambient air.
    Type of Medium: Online Resource
    ISSN: 2196-7350 , 2196-7350
    URL: Issue
    URL: Article
    DOI: 10.1002/admi.v9.31
    DOI: 10.1002/admi.202201437
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2750376-8
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  • 2
    Online Resource
    Online Resource
    Template‐Free Synthesis of Magnetic Chains Self‐Assembled from Urchin‐Like Hierarchical Ni Nanostructures
    Wiley ; 2010
    In:  European Journal of Inorganic Chemistry Vol. 2010, No. 8 ( 2010-03), p. 1283-1288
    Details
    In: European Journal of Inorganic Chemistry, Wiley, Vol. 2010, No. 8 ( 2010-03), p. 1283-1288
    Abstract: Magnetic chains self‐assembled from urchin‐like hierarchical Ni nanostructures have been successfully synthesized by a simple hydrothermal method requiring 4 h at 115 °C without any template or surfactant. The individual urchin‐like hierarchical nanostructures have an average diameter of 2–4 μm and are composed of well‐aligned sword‐like nanopetals growing radially from the surfaces of the spherical particles. The products were characterized by means of X‐ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy‐dispersive X‐ray spectroscopy analysis (EDX), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric and differential scanning calorimetric analysis (TGA‐DSC). A rational formation mechanism of magnetic chains was proposed. Magnetic hysteresis measurements revealed that the as‐synthesized Ni chain‐like architectures display ferromagnetic behavior with saturation magnetization, remanent magnetization, and coercivity values of 52.58 emu/g, 5.82 emu/g, and 211.67 Oe, respectively.
    Type of Medium: Online Resource
    ISSN: 1434-1948 , 1099-0682
    URL: Issue
    URL: Article
    DOI: 10.1002/ejic.v2010:8
    DOI: 10.1002/ejic.200900882
    RVK:
    VA 4072.5
    Language: English
    Publisher: Wiley
    Publication Date: 2010
    detail.hit.zdb_id: 1475009-0
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