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Title: Decoupling optical and electronic optimization of organic solar cells using high-performance temperature-stable TiO{sub 2}/Ag/TiO{sub 2} electrodes

An electrode structured with a TiO{sub 2}/Ag/TiO{sub 2} (TAT) multilayer as indium tin oxide (ITO) replacement with a superior thermal stability has been successfully fabricated. This electrode allows to directly tune the optical cavity mode towards maximized photocurrent generation by varying the thickness of the layers in the sandwich structure. This enables tailored optimization of the transparent electrode for different organic thin film photovoltaics without alteration of their electro-optical properties. Organic photovoltaic featuring our TAT multilayer shows an improvement of ∼12% over the ITO reference and allows power conversion efficiencies (PCEs) up to 8.7% in PTB7:PC{sub 71}BM devices.
Authors:
; ; ; ; ;  [1] ;  [2]
  1. Department of Physics, University of Konstanz, P.O. Box 680, 78467 Constance (Germany)
  2. Louisiana State University, Chemical Engineering Building, Baton Rouge, Louisiana 70803 (United States)
Publication Date:
OSTI Identifier:
22499216
Resource Type:
Journal Article
Resource Relation:
Journal Name: APL Materials; Journal Volume: 3; Journal Issue: 10; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DECOUPLING; EFFICIENCY; ELECTRODES; OPTICAL PROPERTIES; OPTIMIZATION; ORGANIC SOLAR CELLS; PHOTOVOLTAIC EFFECT; STABILITY; THICKNESS; THIN FILMS; TIN OXIDES; TITANIUM OXIDES