Figure 11.

Overview of 3D frameworks of [A₃X][Ga₃PS₈] (A = K, Rb; X = Cl, Br) and their relative LIDTs and SHG intensities in comparison with those of AgGaS₂. The [Ga₃PS₁₀]^6– cluster layers in the structures are the main source of SHG efficiency and they can be viewed as NLO functional motifs. The [A₃X]²⁺ salt layers mainly contribute wide band gaps and large LIDTs, and they can be viewed as LIDT functional motifs. Reproduced with permission from ref. [79]. Copyright 2016, The Royal Society of Chemistry.