In n=5 (BA)2(MA)4Pb5I16, the diamagnetic shift coefficient falls from 1.37±0.05 μeV/T² at 20 K to 0.36±0.13 μeV/T² at 286 K, implying the exciton binding energy more than triples at room temperature.
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Unconventional Temperature Dependence of Exciton Diamagnetism in 2D Ruddlesden-Popper Lead Halide Perovskites
In n=5 (BA)2(MA)4Pb5I16, the diamagnetic shift coefficient falls from 1.37±0.05 μeV/T² at 20 K to 0.36±0.13 μeV/T² at 286 K, implying the exciton binding energy more than triples at room temperature.