Starting materials: BABr (synthesized), PbBr2, HBr

Product: Colorless single crystals

Description: (BA)2PbBr4 crystals were synthesized by mixing BABr, and PbBr2 into a saturated HBr solution at a molar ratio of 2:1. Complete dissolution was achieved by heating to boiling with constant stirring for ~30 minutes. Upon slowly cooling, at a rate of 1°C/min to room temperature, the crystals precipitated. The crystals were removed by suction filtration and were dried in a vacuum.

Method: UV-vis absorption

Description: A Shimadzu UV-3101 UV-vis spectrophotometer was used to measure the absorption spectra.

H. Chen, J. Lin, J. Kang, Q. Kong, D. Lu, J. Kang, M. Lai, L. N. Quan, Z. Lin, J. Jin, L. Wang, M. F. Toney, and P. Yang, Structural and spectral dynamics of single-crystalline Ruddlesden-Popper phase halide perovskite blue light-emitting diodes, Science Advances 6, eaay4045‑eaay4045 (2020). doi: 10.1126/sciadv.aay4045.

Entry added on: June 25, 2020, 12:41 p.m.
Entry added by: Andrew Levin NREL
Last updated on: May 3, 2022, 3:09 p.m.
Last updated by: Rayan C Duke University
Data correctness verified by:

• Rayan C Duke University