Determination of the device performance parameters of perovskite solar cells is far from trivial as transient effects may cause large discrepancies in current-voltage measurements as a function of scan rate and pre-conditioning. Maximum power point tracking, MPPT, enables to determine the steady-state maximum power conversion efficiency. However, the MPPT does not provide any information on the device performance parameters, which are reliable only if extracted from current-voltage curves collected under steady-state conditions. We show that is possible to determine the shorter settling or delay time suitable to carry out J-V measurements under steady-state conditions by analysis of the transient device response around the MPP. This procedure proves to be more time-efficient than measurement J-V measurements at a variety of scan rates. Furthermore, the generic algorithm presented here can be implemented to assess changes in the dynamic response of devices during long-term device ageing.
@article{arxiv.1906.05028,
title = {Transient Analysis during Maximum Power Point Tracking (TrAMPPT) to Assess Dynamic Response of Perovskite Solar Cells},
author = {Aniela Czudek and Katrin Hirselandt and Lukas Kegelmann and Amran Al-Ashouri and Marko Jošt and Weiwei Zuo and Antonio Abate and Lars Korte and Steve Albrecht and Janardan Dagar and Eva L. Unger},
journal= {arXiv preprint arXiv:1906.05028},
year = {2019}
}