Simulation of current–voltage curves for inverted planar structure perovskite solar cells using equivalent circuit model with inductance

Abstract

Physical modeling of hysteretic behavior in current–voltage (I–V) curves of perovskite solar cells (PSCs) is necessary for further improving their power conversion efficiencies (PCEs). The reduction of hysteresis in inverted planar structure PSCs (p-PSCs) has been achieved by using a [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) layer. In the cases, the opposite trend of the I–V hysteresis has been observed where the forward scan shows slightly higher efficiency than the reverse scan. In this paper, an equivalent circuit model with inductance is proposed. This model consists of a Schottky diode involving a parasitic inductance focusing PCBM/Al(Ca) interface and accurately represents the opposite trend of the I–V hysteresis of the p-PSC with an inverted structure.

Effect of TiO2 Surface Treatment on the Current–Voltage Hysteresis of Planar‐Structure Perovskite Solar Cells Prepared on Rough and Flat Fluorine‐Doped Tin Oxide Substrates

“…Experimental I – V curves were successfully reproduced by simulating the I – V behavior of the equivalent circuit. In some cases, depending on the sample′s fabrication conditions, the normal trend of hysteresis became opposite, that is, the reverse scan showing a higher performance than the forward scan . An inductance element representing the kinetics of the charges at the perovskite/contact interfaces in the equivalent circuit can be one reason for this opposite trend.…”

“…In some cases,d epending on the sample's fabrication conditions,t he normal trend of hysteresis became opposite, that is,t he reverse scan showing ah igher performance than the forward scan. [14] An inductance element representing the kinetics of the charges at the perovskite/ contacti nterfaces in the equivalent circuit can be one reason for this opposite trend. Both, presence of capacitancea nd inductance are related to the interfaces in perovskite solar cells.I thas been shown that mechanical bending of perovskite cells on ap lastic substrate gave rise to an enlarged hysteresis of the I-V curves.T his is supposed to be caused by physical damages at the interfaces,p eeling, microdefects, among others.…”

Landau-Khalatnikov Subcircuit based Equivalent Circuit Model for Hybrid Perovskite Solar Cells

“…In a model proposed by L. Cojocaru et al, the origin of J-V hysteresis has been related to the capacitance created at the interfaces [19]. Another model uses an equivalent circuit with an inductance to simulate the hysteresis effect [20]. Few ECMs also stemmed from the analysis of impedance spectra (IS) of perovskite solar cells.…”

Comment on “Simulation of current–voltage curves for inverted planar structure perovskite solar cells using equivalent circuit model with inductance”

“…Simulation of current-voltage curves for inverted planar structure perovskite solar cells using equivalent circuit model with inductance Ludmila Cojocaru, Satoshi Uchida, Piyankarage V. V. Jayaweera et al I n a recent letter, Cojocaru et al 1) proposed an equivalent circuit containing an inductor for a perovskite solar cell with small hysteresis. Cojocaru et al argued that the inductance originates from the equivalent circuit model of a Schottky diode mentioned in Ref.…”

“…Obviously, the high inductance is essential to reproduce the hysteresis under the scan speed assumed in Ref. 1. Unlike the commercial inductor shown in Fig.…”