Lone-Pair-Induced Lattice Softness Enables Ultralow Thermal Conductivity in Hybrid Organic-Inorganic Perovskite GuaPbI${}_3$

Rudra P. Singh, Shantanu Pathak, Saswata Bhattacharya +1

Thermal conductivity ($\hat{I}º$) minimization of inorganic thermoelectrics can only be achieved to a certain extent via nanostructural engineering. Here, we introduce a lone-pair-driven…