“…However, only a small range of p‐type 2D semiconductors have been prepared and evaluated in different applications. [ 13 ] Here, as shown in Figure , we build toolkit to summarize potential inorganic p‐type 2D semiconductors and classify them into four categories by elemental composition: single element materials (e.g., Ge, [ 17 ] Se, [ 18 ] Te, [ 19 ] b‐As, [ 20 ] BP [ 10a,b ] ), chalcogenides (e.g., SnS, [ 21 ] GaSe, [ 22 ] MoTe 2 [ 23 ] ), oxides (e.g., h ‐TiO 2 , [ 24 ] Cu 2 O [ 25 ] ), and others (e.g., GeAs, [ 26 ] AsP, [ 11 ] CsSnI 3 [ 27 ] ). The above p‐type members have demonstrated several interesting and important features, such as widely‐tunable bandgaps of 0.3–4.0 eV, ultra‐high hole mobility, mechanical flexibility, and anisotropic electrical conductance, making them attractive for both fundamental studies and practical applications.…”