Effect of doping copper-phthalocyanine and annealing treatment on the performance of polymer solar cells

Shen Xing; Junsheng Yu; Hanyu Wang

doi:10.1117/12.2243403

25 October 2016 Effect of doping copper-phthalocyanine and annealing treatment on the performance of polymer solar cells

Shen Xing, Junsheng Yu, Hanyu Wang

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Proceedings Volume 9686, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices; 96861B (2016) https://doi.org/10.1117/12.2243403
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China

Abstract

We have fabricated poly(3-hexylthiophene) (P3HT)/copper phthalocyanine (CuPc)/fullerene (PC₇₁BM) ternary blend films. This photoactive layer is sandwiched between an indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT/PSS) photoanode and a bathophenanthroline (Bphen)/Ag photocathode. The thin films have been characterized by atomic force microscope (AFM) and ultraviolet/visible spectroscopy in order to study the influence of CuPc doping on the morphological and optical properties of the photoactive layer. We have also compared the J-V characteristics of two different organic solar cells (OSCs): ITO/PEDOT:PSS/P3HT_0.5:PC₇₁BM_0.5/Bphen/Ag and ITO/PEDOT:PSS/P3HT_0.3:CuPc_0.3:PC₇₁BM_0.4/Bphen/Ag with and without annealing. Both structures show good photovoltaic behavior. Actually, the incorporation of CuPc into P3HT:PC₇₁BM thin film improves all the photovoltaic characteristics. We have also seen that thermal annealing significantly improves the optical absorption ability and stabilizes the OSCs making it more robust to chemical degradation.

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Shen Xing, Junsheng Yu, and Hanyu Wang "Effect of doping copper-phthalocyanine and annealing treatment on the performance of polymer solar cells", Proc. SPIE 9686, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices, 96861B (25 October 2016); https://doi.org/10.1117/12.2243403

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KEYWORDS

Annealing

Solar cells

Thin films

Polymers

Doping

Absorption

Photovoltaics

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