Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 98, Issue -, Pages 482-485Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2011.11.005
Keywords
Organic photovoltaic; PEDOT:PSS-free solar cells; Tetrasulfonic copper phthalocyanine
Funding
- National Research Fund Luxembourg (FNR)
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This work aims at designing a new poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)-free multilayered system for bulk heterojunction organic solar cells. We propose a multilayer structure of glass/indium tin oxide/tetrasulfonated copper phthalocyanine/poly(3-hexylthiophene):[6,6]-C-61-butyric acid methyl ester/aluminum (ITO/TS-CuPc/P3HT:[60]PCBM/Al). In this architecture, the TS-CuPc is mainly used as a buffer layer instead of PEDOT:PSS and can also act as an electron-donor material and a hole-extraction layer. Photovoltaic devices with a short-circuit current density of 9.7 mA/cm(2), a open-circuit voltage of 0.51 V, and a power conversion efficiency of 1.76% were achieved, without post deposition thermal treatment of the P3HT:[60]PCBM blend layer. (C) 2011 Elsevier B.V. All rights reserved.
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