Search

We report that a very thin n-type Sb2O3 anode buffer layer in copper phthalocyanine (CuPc)/fullerene (C60) organic solar cells (OSCs) increases the power conversion efficiency by a factor of ∼34%. The enhancement is mostly attributed to the preferred orientation of CuPc layer and the increased contact area of CuPc/C60 interface, induced by the Sb2O3 layer rather than commonly regarded energy level alignment achieved by other metal oxides such as MoO3. Our study provides an insight to understand effect of the metal oxide buffer layers on the morphological influence in organic solar cells. [ABSTRACT FROM AUTHOR]

Abstract: This paper reported the fabrication of CdS nanorod arrays on transparent conductive tin-doped In2O3 (ITO) glass substrate by combining electrodeposition and hydrothermal processes. One thin layer of CdS particles on substrates was prepared by electrodeposition as seeds, upon which well-aligned nanorod arrays were hydrothermally grown in large scale. The morphology, structure and phase composition of CdS nanorod arrays were examined by X-ray diffraction, field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy (TEM), and high-resolution TEM. The optical absorption spectra and the temperature-dependent photoluminescence of CdS nanorod arrays were also studied. An organic/inorganic hybrid solar cell prototype device was fabricated based on the as-prepared CdS nanoarrays grown on the transparent ITO electrode (ITO/CdS arrays/poly[2-methoxy-5-(20-ethylhexyloxy)-1,4-phenylene-vinylene]/Au). The power conversion efficiency was 0.06%, showing an obvious photovoltaic effect. [Copyright &y& Elsevier]