Synthesis and characterization of photosensible CH3NH3PbI3 and CH3NH3PbI3–xClx perovskite crystalline films
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PLEŞCO, Irina; POSTOLACHE, Vitalie; VOLODINA, Galina; ZALAMAI, Victor; GHIMPU, Lidia; TIGINYANU, Ion. Synthesis and characterization of photosensible CH3NH3PbI3 and CH3NH3PbI3–xClx perovskite crystalline films. In: Surface Engineering and Applied Electrochemistry. 2017, nr. 1(53), pp. 15-19. ISSN 1068-3755.
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Surface Engineering and Applied Electrochemistry
Numărul 1(53) / 2017 / ISSN 1068-3755 /ISSNe 1934-8002

Synthesis and characterization of photosensible CH3NH3PbI3 and CH3NH3PbI3–xClx perovskite crystalline films


DOI: 10.3103/S1068375517010100
Pag. 15-19

Pleşco Irina1, Postolache Vitalie1, Volodina Galina2, Zalamai Victor3, Ghimpu Lidia4, Tiginyanu Ion14
 
1 Technical University of Moldova,
2 Institute of Chemistry of the Academy of Sciences of Moldova,
3 Institute of Applied Physics, Academy of Sciences of Moldova,
4 Ghitu Institute of Electronic Engineering and Nanotechnology of the Academy of Sciences of Moldova
 
Disponibil în IBN: 16 decembrie 2017


Rezumat

Methylammonium lead-halide perovskites are very promising for applications as solar light-harvesting materials. This paper presents a study on the methylammonium iodide and iodide-chloride perovskite films prepared by spin coating from a liquid precursor. The powder diffraction spectroscopy has detected 10 lattice plane reflections common to a perovskite of a tetragonal crystal structure. The calculated cell parameters are a = 8.85 Å and c = 12.60 Å. The preparation conditions and their impact on the crystallization process and film morphology are discussed. A red shift of photoluminescence bands at low temperatures was evidenced. A photoelectrical study of perovskite films has revealed their high sensibility to illumination, especially in the visible spectrum, which gives a hint on their applications in photovoltaics.

Cuvinte-cheie
methylammonium lead halide, organic-inorganic perovskite, photo-sensibility