Automated wide-line nuclear quadrupole resonance of mixed-cation lead-halide perovskites.

ABSTRACT: Nuclear quadrupole resonance (NQR), a technique related to nuclear magnetic resonance, is extremely sensitive to local crystal composition and structure. Unfortunately, in disordered materials, this sensitivity also leads to very large linewidths, presenting a technical challenge and requiring a serious time investment to get a full spectrum. Here, we describe our newly developed, automated NQR set-up to acquire high-quality wide-line spectra. Using this set-up, we carried out ¹²⁷I NQR on three mixed-cation lead-halide perovskites (LHPs) of the form MA _x FA_1-x PbI₃ (where MA denotes methylammonium; FA denotes formamidinium; and x= 0.25, 0.50 and 0.75) at various temperatures. We achieve a signal-to-noise ratio of up to ∼400 for line

SUBMITTER: Wolffs JW 

PROVIDER: S-EPMC12285786 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature