Capacitive Dark Currents, Hysteresis, and Electrode Polarization in Lead Halide Perovskite Solar Cells

Almora Rodriguez O, Zarazua I, Mas-Marza E, Mora-Sero I, Bisquert J, Garcia-Belmonte G (2015)


Publication Type: Journal article, Original article

Publication year: 2015

Journal

Book Volume: 6

Pages Range: 1645-1652

Journal Issue: 9

DOI: 10.1021/acs.jpclett.5b00480

Abstract

Despite spectacular advances in the conversion efficiency of perovskite solar cells many aspects of its operating modes are still poorly understood. Capacitance constituted to explore which mechanisms and functions. Analyzing capacitive responses in the device but also the kinetics of the charging processes and how they alter the solar cell current. Two main polarization processes are identified. Dielectric properties of the microscopic dipolar units through the orthorhombic-to-tetragonal phase transition account. Electrode polarization caused by interfacial effects, presumably related to kinetically slowness piled up in the vicinity of the outer interfaces, consistently explain the reported excess capacitance values ​​at low frequencies. In addition, current-voltage curves and capacitive responses of perovskite-based solar cells are connected. The observed hysteretic effect in the dark current originates from the slow capacitive mechanisms.

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How to cite

APA:

Almora Rodriguez, O., Zarazua, I., Mas-Marza, E., Mora-Sero, I., Bisquert, J., & Garcia-Belmonte, G. (2015). Capacitive Dark Currents, Hysteresis, and Electrode Polarization in Lead Halide Perovskite Solar Cells. Journal of Physical Chemistry Letters, 6(9), 1645-1652. https://dx.doi.org/10.1021/acs.jpclett.5b00480

MLA:

Almora Rodriguez, Osbel, et al. "Capacitive Dark Currents, Hysteresis, and Electrode Polarization in Lead Halide Perovskite Solar Cells." Journal of Physical Chemistry Letters 6.9 (2015): 1645-1652.

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