Journal
PHYSICA B-CONDENSED MATTER
Volume 537, Issue -, Pages 7-11Publisher
ELSEVIER
DOI: 10.1016/j.physb.2018.01.057
Keywords
CH3NH3PbI3-xClx; Single crystal growth; Perovskite solar cell; Optical properties
Categories
Funding
- National Natural Science Foundation of China [51472123, 51702165, 51502142]
- Research Innovation Program for College Graduates of Jiangsu Province, China [KYZZ16_0351]
- Six Talent Peaks Project of Jiangsu Province, China [R2016L07]
- Natural Science Foundation of the Jiangsu Higher Education Institutions [16KJB430021]
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In this paper, CH3NH3PbI3-xClx crystal was grown by solution cooling method with CH3NH3I and PbCl2 as raw materials. Lead compounds and CH3NH3PbI3-xClx crystal with size about 6mm x 4mm x 2mm were obtained. The chemical reactions with different CH3NH3I/PbCl2 ratios were analyzed. XPS shows the content of chlorine in CH3NH3PbI3-xClx is about 0.91%. PXRD, FT-IR, Raman and absorbance spectra were used to study the structure and optical properties of CH3NH3PbI3-xClx by comparing with CH3NH3PbI3 crystal. The CH3NH3PbI3-xClx crystal grown is of tetragonal structure with the lattice constants a = b = 8.8165 angstrom, c = 12.7920 angstrom and the bandgap value of 1.57 eV.
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