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000902195 1001_ $$0P:(DE-Juel1)173073$$aKrückemeier, Lisa$$b0
000902195 245__ $$aConsistent Interpretation of Electrical and Optical Transients in Halide Perovskite Layers and Solar Cells
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000902195 520__ $$aTransient photoluminescence (TPL) and transient photovoltage (TPV) measurements are important and frequently applied methods to study recombination dynamics and charge-carrier lifetimes in the field of halide-perovskite photovoltaics. However, large-signal TPL and small-signal TPV decay times often correlate poorly and differ by orders of magnitude. In order to generate a quantitative understanding of the differences and similarities between the two methods, the impact of sample type (film vs device), large- versus small-signal analysis, and differences in detection mode (voltage vs. luminescence) are explained using analytical and numerical models compared with experimental data. The main solution to achieving a consistent framework that describes both methods is the calculation of a voltage or carrier density dependent decay time that can be interpreted in terms of a capacitive region, a region dominated by defect-assisted recombination and a region that is dominated by higher order recombination (radiative and Auger). It is experimentally shown that in the efficient methylammonium lead-iodide solar cells, effective monomolecular lifetimes ≈2 µs can be consistently measured with TPL and TPV. Furthermore, the shape of the decay time versus voltage or carrier density follows predictions derived from implicit and explicit solutions to differential equations.
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000902195 7001_ $$0P:(DE-Juel1)169264$$aLiu, Zhifa$$b1
000902195 7001_ $$0P:(DE-Juel1)169731$$aKrogmeier, Benedikt$$b2
000902195 7001_ $$0P:(DE-Juel1)143905$$aRau, Uwe$$b3$$ufzj
000902195 7001_ $$0P:(DE-Juel1)159457$$aKirchartz, Thomas$$b4$$eCorresponding author
000902195 773__ $$0PERI:(DE-600)2594556-7$$a10.1002/aenm.202102290$$gp. 2102290 -$$n46$$p2102290$$tAdvanced energy materials$$v11$$x1614-6840$$y2021
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