Research Article
Scanning Electrochemical Microscope Studies of Charge Transfer Kinetics at the Interface of the Perovskite/Hole Transport Layer
Table 1
Normalized rate constant keff (cms−1) for NiO/CH3NH3PbI3 and PODT: PSS/CH3NH3PbI3 in blue illumination.
| /10−9 (mol cm−2s−1) | Curve # | | k eff/10−3 (cms−1) | k eff//106 (mol/cm2) |
| (a) NiO/CH3NH3PbI3 | | | | | 22.4 | 7 | 0.0156 | 16.9 | 0.75 | 19.8 | 6 | 0.0152 | 16.5 | 0.83 | 13.9 | 5 | 0.0139 | 15.1 | 1.08 | 11.8 | 4 | 0.0132 | 14.3 | 1.21 | 6.82 | 3 | 0.0107 | 11.6 | 1.71 | 4.12 | 2 | 0.0101 | 11.1 | 2.69 | 2.02 | 1 | 0.0055 | 5.94 | 2.94 |
| (b) PODT : PSS/CH3NH3PbI3 | | | | | 22.4 | 7 | 0.0124 | 13.4 | 0.59 | 19.8 | 6 | 0.0119 | 12.9 | 0.65 | 13.9 | 5 | 0.0108 | 11.6 | 0.83 | 11.8 | 4 | 0.0101 | 10.7 | 0.91 | 6.82 | 3 | 0.0078 | 8.44 | 1.24 | 4.12 | 2 | 0.0071 | 7.96 | 1.93 | 2.02 | 1 | 0.0036 | 3.97 | 1.97 |
| (c) FTO/CH3NH3PbI3 | | | | | 22.4 | 7 | 0.0233 | 4.12 | 0.183 | 19.8 | 6 | 0.0225 | 3.99 | 0.201 | 13.9 | 5 | 0.0203 | 3.59 | 0.258 | 11.8 | 4 | 0.0192 | 3.39 | 0.287 | 6.82 | 3 | 0.0151 | 2.66 | 0.391 | 4.12 | 2 | 0.0142 | 2.51 | 0.609 | 2.02 | 1 | 0.0723 | 1.28 | 0.634 |
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