Perovskite Solar Cell with Low Cost Cu-Phthalocyanine as Hole Transporting Material

Vijay Kumar Challuri^a, Georgia Sfyri^a^,^b, Lianos Panagiotis^a^,^c

^aFORTH/ICE-HT, Institute of Chemical engineering sciences, Lab no 216,FORTH/ICE-HT,, patras, 26504, Greece

^bUniversity of Patras, Department of Physics, 26500 Patras, Greece

^cDepartment of Chemical Engineering, University of Patras,, 26500 Patras, Greece, Greece

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)

Roma, Italy, 2015 May 11th - 13th

Organizer: Filippo De Angelis

Poster, Vijay Kumar Challuri, 302
Publication date: 5th February 2015

Hybrid organic–inorganic solar cells based on lead halide perovskites have attracted significant attention over the last three years thanks to their impressive conversion efficiencies and the intriguing intrinsic properties of the mixed lead halide perovskites^1-3. The conversion efficiency with spiro-MeOTAD as hole transporting material has overpassed 16% to 17% while a planar device structure lead recently⁴ to an efficiency as high as 19.3%. However the cost and low hole mobility of spiro-MeOTAD remains a bottleneck for commercialization. Here, we report a low cost and easy to manipulate molecular hole conductor, copper phthalocyanine (CuPc), deposited by vacuum deposition⁵,which has been studied as component of organometal halide perovskite solar cells. The molecular structure of copper phthalocyanine is shown in Fig.1. Its visible absorption lies between 500 to 800 nm. The cells were assembled and tested under ambient conditions. They achieved a power conversion efficiency of 5.0% using copper phthalocyanine, which appears to be very promising as a hole-transporting material, with possibility of further optimization. The present work has also examined the possibility of upscaling by construction of small cell modules.
Fig. 1 Molecular structure of Cu phthalocyanine and device layer structure of the perovskite solar cell.
References 1. Jeon, N. J. et al. o-Methoxy substituents in Spiro-OMeTAD for efficient inorganic–organic hybrid perovskite solar cells. J. Am. Chem. Soc. 136, 7837–7840 (2014). 2. Ryu, S. et al. Voltage output of efficient perovskite solar cells with high open-circuit voltage and fill factor. Energy Environ. Sci. 7, 2614–2618 (2014). 3.Lee, J.-W. et al. High-efficiency perovskite solar cells based on the black polymorph of HC(NH2)2PbI3. Adv. Mater. 26, 4991–4998 (2014). 4.Zhou, H. et al. Interface engineering of highly efficient perovskite solar cells. Science 345, 542–546 (2014). 5. C.V.Kumar et al Perovskite solar cell with low costCu-phthalocyanine as hole transporting material. RSC Adv., 2015, 5, 3786–3791 Acknowledgement. The present work was supported by the project 11SYN_7¬_298, implemented under the Act "COOPERATION 2011 - Partnerships of Production and Research Institutions in Focused Research and Technology" of the Operational Programmes “Competitiveness and Entrepreneurship (EPAN II)” and “Regions in Transmission (NSFR 2007-13)”.

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