Table 1. Summary of the best device performance for the OTP devices with different HTLs and different thickness of active layers.

HTL and active layer thickness	JSC (mA cm−2)	VOC (V)	FF (%)	PCE (%)
PEDOT:PSS 400 nm MAPbI3	18.6	0.92	72.0	12.3
c-OTPD 360 nm MAPbI3	21.2	1.09	75.5	17.5
c-OTPD 500 nm MAPbI3	22.4	1.05	75.6	17.8
c-OTPD 600 nm MAPbI3	22.2	1.06	73.4	17.2
PTAA 500 nm MAPbI3	22.0	1.07	76.8	18.1