diffusion length, charge transfer kinetics-diffusion length and ohmic-diffusion length; and topographic lengths, viz.
For diffusion length estimation each sample was measured five times, at different locations.
The annealing time of 1 h ensures, as before, a diffusion length exceeding the sample dimensions27.
A longer electron diffusion length is favourable for enhancing efficiency.
The electron diffusion length is longer than the hole diffusion length, as commonly observed in semiconductors with a lighter effective mass of electrons than of holes15, and as was previously found for MAPbI316.
These contacts are separated by about from each other, which is much longer than the spin diffusion length.
Zhumekenov, A. A. et al. Formamidinium lead halide perovskite crystals with unprecedented long carrier dynamics and diffusion length.
Hence, with τ = 80 s, c.f. Fig. 3b, this leads to a diffusion length of 250 μm.
The diffusion length formula of the photo excited electron in the exponential doping structure is deduced, and the diffusion length in the activation layer is calculated.
For the case of normal transmitted angle, the IQEb with diffusion length 1000 μm is about 81% and is 37% higher than that with diffusion length 25 μm.
The reasonable interpretation of the interdiffusion effect on the optical properties of QWs is proposed in terms of low diffusion length and high diffusion length regimes.
