期刊
SOLAR RRL
卷 4, 期 6, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/solr.202000029
关键词
charge injection; charge recombination; kinetic Monte Carlo simulations; organic photovoltaics; morphology
资金
- European Union's Horizon 2020 research and innovation programme under the Marie Skodowska-Curie grant [799801]
- Vetenskapsradet (project OPV2.0)
- Knut and Alice Wallenberg Foundation [KAW 2016.0494]
- Jane & Aatos Erkko foundation (project ASPIRE)
- Marie Curie Actions (MSCA) [799801] Funding Source: Marie Curie Actions (MSCA)
Kinetic Monte Carlo (KMC) simulations are a powerful tool to study the dynamics of charge carriers in organic photovoltaics. However, the key characteristic of any photovoltaic device, its current-voltage (J-V) curve under solar illumination, has proven challenging to simulate using KMC. The main challenges arise from the presence of injecting contacts and the importance of charge recombination when the internal electric field is low, i.e., close to open-circuit conditions. Herein, an experimentally calibrated KMC model is presented that can fully predict the J-V curve of a disordered organic solar cell. It is shown that it is crucial to make experimentally justified assumptions on the injection barriers, the blend morphology, and the kinetics of the charge transfer state involved in geminate and nongeminate recombination. All of these properties are independently calibrated using charge extraction, electron microscopy, and transient absorption measurements, respectively. Clear evidence is provided that the conclusions drawn from microscopic and transient KMC modeling are indeed relevant for real operating organic solar cell devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据