Fig. 1

a Schematic of a tiered “funnel” screening pipeline (left) utilized to discover low-dimensional hybrid halide perovskites for NDR devices. The screening results are summarized in the table (right). b Crystal structures of quasi-1D bulk TMSGeI₃ and c 1D GeI₃ inorganic core-only face-sharing octahedral framework. The black dotted boxes indicate the unit cells for each case