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. 2021 Jan 4;8(4):2003334. doi: 10.1002/advs.202003334

Figure 5.

Figure 5

a) Direct band‐edge emission mechanism for 3D perovskites. b) Quasi‐2D multiphase perovskite materials with different 〈n〉 values channel energy which concentrate to smallest bandgap emitters. Reproduced with permission.[ 107 ] Copyright 2016, Springer Nature. c) Mechanism of free exciton and self‐trapped exciton emission in corrugated 2D, and 1D perovskites. d) Mechanism for emission from a reorganized excited state in 0D perovskites. a,c,d) Reproduced with permission.[ 70 ] Copyright 2017, American Chemical Society. e) Exciton intrinsic self‐trapping and exciton extrinsic self‐trapping presented by a sheet and hard ball model. Reproduced with permission.[ 109b ] Copyright 2018, American Chemical Society.