Inter-phase charge and energy transfer in Ruddlesden-Popper 2D perovskites: Critical role of the spacing cations
Date
2018Author
Zheng, KaiboChen, Yani
Sun, Yong
Chen, Junsheng
Chábera, Pavel
Schaller, Richard
Al-Marri, Mohammed J.
Canton, Sophie E.
Liang, Ziqi
Pullerits, Tõnu
...show more authors ...show less authors
Metadata
Show full item recordAbstract
Photo-generated charge carrier dynamics in Ruddlesden-Popper 2D perovskites with linear (n-BA) and branched (iso-BA) butylamine as spacing cations have been studied by using transient absorption and time-resolved photoluminescence spectroscopies. Both n-BA and iso-BA perovskites consist of mixed-phase 2D quantum wells with various layer thicknesses, where the photo-generated charges undergo inter-phase charge transfer from thinner quantum wells to thicker ones. By shortening the spacer from n-BA to iso-BA, the transfer rates are significantly increased, which can also diminish the charge accumulation in thin quantum wells induced by the unbalanced electron and hole charge transfer rates. Under high excitation intensity, the shorter spacing cation is found to further facilitate the energy transfer, which can compete with fast high-order carrier recombination and consequently improve the charge transfer efficiency. Intriguingly, we observe the existence of extra bulk 3D phases embedded within iso-BA perovskites, which can efficiently collect the confined charges within 2D phases and then transport them with faster carrier mobility and slower recombination rates. 2018 The Royal Society of Chemistry.
Collections
- GPC Research [494 items ]
Related items
Showing items related by title, author, creator and subject.
-
Analysis and quality of service evaluation of a fast charging station for electric vehicles
Zenginis, Ioannis; Vardakas, John S.; Zorba, Nizar; Verikoukis, Christos V. ( Elsevier Ltd , 2016 , Article)Electrification of transportation is considered as one of the most promising ways to mitigate climate change and reduce national security risks from oil and gasoline imports. Fast charging stations that provide high quality ... -
Performance assessment of two-timescale multi-objective volt/var optimization scheme considering EV charging stations, BESSs, and RESs in active distribution networks
Zamzam, Tassneem; Shaban, K.; Gaouda, A.; Massoud, Ahmed ( Elsevier Ltd , 2022 , Article)The high penetrations of distributed energy resources of renewable energy sources, battery energy storage systems, and electric vehicles introduced several challenges to power networks. It can lead to high voltage variation, ... -
Placement and Capacity of EV Charging Stations by Considering Uncertainties with Energy Management Strategies
Ahmad, Fareed; Iqbal, Atif; Asharf, Imtiaz; Marzband, Mousa; Khan, Irfan ( Institute of Electrical and Electronics Engineers Inc. , 2023 , Article)At the present context, Plug-in electric vehicles (PEVs) are gaining popularity in the automotive industry due to their low CO2 emissions, simple maintenance, and low operating costs. As the number of PEVs on the road ...