Synthesis of 2D lead-free hybrid perovskites (CnH2n+1NH3)2BX4; B = Mn, Cu; X = Cl, Br, I) and characterization
Doru C. Lupascu a, Christian Fettkenhauer a, Martina Pantaler a, Adela Bronja a, Irina Anusca a
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV17)
Yokohama-shi, Japan, 2017 February 2nd - 4th
Organizers: Tsutomu Miyasaka and Iván Mora-Seró
Poster, Irina Anusca, 004
Publication date: 7th November 2016

Organic-inorganic lead halide perovskites have a high content of toxic lead which may eventually hamper their commercialization [1]. The hybrid two-dimensional drew attention because these systems can be regarded as natural multiple-quantum-wells in which the semiconducting inorganic layers act as potential "wells" and the organic layers act as potential "barriers"[2,3]. 2D perovskites (CnH2n+1NH3)2BX4; B = Mn, Cu; X = Cl, Br, I) can be alternative classes of lead free perovskite for optoelectronic application. We prepare different series of Cu and Mn perovskites by mixing of different CnH2n+1 organic ammonium cation (alkyl and aromatic) and X halide ion and we studied the optical properties in such systems. Properties were analyzed using x-ray diffraction und UV-VIS spectroscopy. Bruker D8 Advance with Bragg-Brentano geometry was used for x-ray analysis and UV3600 Shimadzu for optical characterization. The effect of different solvents on the morphology and crystallinity of 2D perovskite films were investigate using AFM.

[1] Daniele Cortecchia, Herlina Arianita Dewi et al., Inorganic Chemistry, 2016, 55(3) pp. 1044-1052.

[2] Kataoka, T.; Kondo, T.; Ito, R.; Sasaki, S.; Uchida, K.; Miura, N.Magneto-Optical Study on Excitonic Spectra in (C6H13NH3)2PbI4, Phys. Rev. B: Condens. Matter Mater. Phys.1993, 47, 2010−2018.

[3] Muljarov, E. A.; Tikhodeev, S. G.; Gippius, N. A.; Ishihara, T. Phys. Rev. B: Condens. Matter Mater. Phys. 1995, 51, 14370−14378.

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