Facile synthesis and photovoltaic applications of a new alkylated bismethano fullerene as electron acceptor for high open circuit voltage solar cells


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BARAN D., Erten-Ela S. , KRATZER A., AMERI T., Brabec C. J. , HIRSCH A.

RSC ADVANCES, cilt.5, ss.64724-64730, 2015 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 5 Konu: 79
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1039/c5ra10089e
  • Dergi Adı: RSC ADVANCES
  • Sayfa Sayısı: ss.64724-64730

Özet

It is crucial to control the lowest unoccupied molecular orbital (LUMO) of electron accepting materials for producing efficient charge transfer in bulk heterojunction (BHJ) solar cells. Due to their high LUMO level, soluble bis-adducts of C-60 are of high interest for improving the V-oc in BHJ solar cells. In this work, we have developed a novel bis-4-propylpentyl[6,6]methanofullerene bis-adduct, NCBA, using a alkyl solubilizing group. The optoelectronic, electrochemical and photovoltaic properties of this bis-product are investigated. NCBA is successfully applied as the electron acceptor with poly(3-hexylthiophene) (P3HT) in a BHJ solar cell showing a high V-oc of 0.73 V.