Accelerating the Assessment of Hysteresis in Perovskite Solar Cells

Abstract

Halide perovskite materials have reached important milestones in the photovoltaic field, positioning them as realistic alternatives to conventional solar cells. However, unavoidable kinetic phenomena have represented a major concern for reliable steady-state performance assessment from standard current–voltage measurements. In particular, the dynamic hysteresis of current–voltage curves requires relatively long stabilization to achieve a credible figure for the power conversion efficiency. Hysteresis is caused by complex current transient phenomena that become active during staircase voltammetry. Here, we address the root of this problem. We pinpoint the dynamic characteristics behind the slow transient responses to strategically predict a minimum time delay and thus estimate the power conversion efficiency under steady-state conditions. Circuit-element analysis and impedance spectroscopy confirm our predictions based on an advanced transient study. Our results fundamentally explore the possibility of reducing data time acquisition in a reliable performance assessment, providing disruptive solutions and perspectives toward systematic production of photovoltaic perovskites.

MXenes as a hole transport interfacial layer for efficient and air-stable quasi-2D perovskite solar cells

“…S1 in the ESI†), which has been frequently reported for many perovskite solar cells. 49–51 Nevertheless, it is important to note that, 2D perovskite passivated with MXene helps to reduce the pinhole defects, and subsequently carrier recombination which leads to enhance the current density.…”

Synergetic interfacial conductivity modulation dictating hysteresis evolution in perovskite solar cells under operation

“…[18][19][20][21] Within this context, recent frameworks have been put forward to explore the frequency domain characteristics of PSCs. [22][23][24] Valuable research in the field has identified some of the parameters affecting hysteresis such as scan rate, [25][26][27][28] device architecture, [29][30][31] chemistry of the perovskite layer, 12,[32][33][34] as well as the electron-transport layer (ETL) and hole-transport layer (HTL). [35][36][37][38][39] For n-i-p architectures, the choice of ETL has been shown to exert a heavy influence over the microstructure of the perovskite layer, as well as the corresponding PSC performance with respect to efficiency, hysteresis and stability.…”

Research Progress on Rashba Effect in Two-Dimensional Organic–Inorganic Hybrid Lead Halide Perovskites

“…Organic–inorganic hybrid lead halide perovskites (OILHPs) have attracted significant interest in the past years due to their outstanding performance as solar absorbers in photovoltaics [ 1 , 2 , 3 , 4 , 5 ]. The long carrier lifetime of photogenerated carriers is a crucial factor for excellent optoelectronic performance [ 6 ].…”