Publications by authors named "Enrique H Balaguera"
Metal halide perovskites are mixed ionic-electronic semiconductors that involve an important and particular phenomenology that negatively affects the performance and stability of next-generation photovoltaic devices based on such material. The ionic nature of perovskites is shown to undergo not only a simple redistribution of charges but also influences the electronic processes and ultimately the steady-state device operation. Nevertheless, a comprehensive understanding of the internal contributions of ionic and electronic conductivities to the evolution of current during device performance experiments and to degradation losses in ageing tests is currently missing.
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- Halide perovskite materials are emerging as viable alternatives to traditional solar cells, but their performance assessment faces challenges due to dynamic hysteresis in current-voltage measurements.
- The hysteresis is attributed to complex current transient phenomena during measurements, requiring extended stabilization for accurate power conversion efficiency readings.
- This research identifies the root causes of these slow responses and suggests a minimum time delay for reliable efficiency estimates, potentially reducing data acquisition time and improving the systematic production of perovskite photovoltaics.