fig6

Figure 6. (A) Top-view SEM image of the ST perovskite film. (B) I-V curves of photodetectors with CA and ST films for 671 nm laser under 20.6 mW/cm². (C) Reproducible on/off switching and (D) transient photocurrent (current-time curve) of the ST film photodetector. (A-D) is quoted with permission from Dong et al.^[104] Cross-sectional SEM images of CsPbBr₃ MC perovskite films without (E) and with (F) PAA. (G) Dark current and photocurrent densities of the CsPbBr₃ MC PDs with the PAA at various applied pressures. (H) Power-dependent J_ph and Responsivity at zero bias. (E-H) is quoted with permission from Zhou et al.^[105]. (I) Optical images of FA10 (STP) films. (J) XRD patterns of FA10 (CA) and FA10 (STP) films. (K) On/off ratio of the photodetectors based on FA10 (CA), FA0 (STP), and FA10 (STP) films under different excitation power intensities of 671 nm laser. (L) Light current of FA10 (STP) film photodetectors at 1st and 15th days. (I-L) is quoted with permission from Shang et al.^[106]. (M) Top-view SEM images of the treated films. (N) Influence of the laser power (at 532 nm) on the photostability of the SCTP film photodetector. (O) Linear optical absorption and photoluminescence (λ_ex = 1,030 nm) spectra of the CsPbI_1.5Br_1.5 SCTP film. (P) Photostability of the CA and SCTP film photodetector excited by a 1,030 nm (80 mW power, 15 V bias voltage). (M-P) is quoted with permission from Huang et al.^[107].