图4. 典型三维钙钛矿晶体结构示意图^[65]、无掺杂CsPbI₂Br(A)与CsPb_0.95Eu_0.05I₂Br钙钛矿薄膜(B)的SEM图^[78]以及器件的结构和Mn²⁺掺杂于间隙和取代Pb²⁺的两种模式示意图^[80]

Fig.4. Schematic diagram of a typical three-dimensional perovskite crystal structure^[65] (a), SEM images of undoped CsPbI₂Br (A) and CsPb_0.95Eu_0.05I₂Br perovskite films (B)^[78] (b) and schematic diagram of device structure and two modes of Mn^{2 +} doped in the gap and replacing Pb^2+[80] (c)