High quality transparent conductive electrodes in organic photovoltaic devices

Autor: Bernard Ratier, C. Defranoux, Mohamad Chakaroun, J.P. Piel, Bruno Lucas, Matt Aldissi
Přispěvatelé: MINACOM, XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2009
Předmět:
Zdroj: Thin Solid Films
Thin Solid Films, Elsevier, 2009, 518 (Issue 4), pp.1250-1253. ⟨10.1016/j.tsf.2009.03.221⟩
ISSN: 0040-6090
DOI: 10.1016/j.tsf.2009.03.221
Popis: The use of indium tin oxide (ITO) in conjunction with polymeric substrates requires deposition at low temperatures or room temperature, and with a limited or no thermal treatment. This process results in high resistivity materials. To achieve practical resistivity levels, we replaced ITO, the workhorse in organic optoelectronic devices, with an ITO/Ag/ITO tri-layer anode. This material yielded the desired electrical properties without a significant effect on its optical properties. For example, a sheet resistance of 15 Ω/□ and an optical transmission of 90% at 550 nm were obtained for a tri-layer film in which thickness of each ITO layer is 50 nm and the Ag layer thickness is 8 nm. The use of these tri-layer anodes in CuPc–C 60 -based organic solar cells led to an increase in the fill factor under illumination, and thus an improvement of the external power conversion efficiency.
Databáze: OpenAIRE