Photoelectric response of ITO electrode sensitized by single-layer C60-aminodicarboxylate derivative C60(C7H13NO4)

Abstract

A single layer of an amphiphilic C60-aminodicarboxylate (C60AC) derivative has been fabricated on semiconducting transparent ITO electrodes with transfer ratios of about 0.900.05 at 25mNm1 by the Langmuir-Blodgett (LB) technique. The photoelectric response of the modified electrodes has been investigated under a nitrogen atmosphere. The photocurrent action spectrum shows that the excited C60AC acts as a photoactive species in the photoinduced electron transfer process. Factors such as the intensity of the irradiation, concentration of reducing agent in the electrolyte solution and bias voltage have been studied. The results indicate that electrons flow from the electrolyte through LB film to the ITO electrode. The quantum yield is 3.0 under favorable conditions.-6