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The beneficial effects of mixing spiro-OMeTAD with n-butyl-substituted copper phthalocyanine for perovskite solar cells

Nouri, E ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. DOI: 10.1016/j.electacta.2016.11.119
  3. Publisher: Elsevier Ltd , 2016
  4. Abstract:
  5. Perovskite solar cells have been constructed under ambient conditions by using 2,2',7,7'-Tetrakis-(N,N-di-4-methoxyphenylamino)-9,9'-spirobifluorene (spiro-OMeTAD) mixed with a small quantity of soluble tetra-n-butyl substituted copper phthalocyanine as hole transporting material. The introduction of the phthalocyanine derivative resulted in an impressive increase of cell efficiency, which changed from 10.4% in the absence to 15.4% in the presence of phthalocyanine. This effect is related to the creation of deep traps in the hole transporting phase which block back-travelling electrons as well as to the improvement of the structural quality of the spiro-OMeTAD film in the presence of phthalocyanine. Both functionalities decrease shunt paths within the hole transporting phase resulting in increasing the fill factor and the open-circuit voltage of the cell
  6. Keywords:
  7. Hole transporting material ; Soluble copper phthalocyanine ; Copper ; Field effect transistors ; Hole mobility ; Nitrogen compounds ; Open circuit voltage ; Organic polymers ; Perovskite ; Solar cells ; Ambient conditions ; Beneficial effects ; Copper phthalocyanine ; Hole-transporting materials ; Phthalocyanine derivatives ; Soluble coppers ; Spiro-OMeTAD ; Structural qualities ; Perovskite solar cells
  8. Source: Electrochimica Acta ; Volume 222 , 2016 , Pages 1417-1423 ; 00134686 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0013468616324550