期刊
ADVANCED ENERGY MATERIALS
卷 8, 期 19, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201800275
关键词
adamantane; passivation; perovskite; solar cells; stability
类别
资金
- School of Engineering of the Hong Kong University of Science and Technology
- European Union's Horizon 2020 program, through a FET Open research and innovation action [687008]
- King Abdulaziz City for Science and Technology (KACST)
Passivation of electronic defects is an effective strategy to boost the performance and operational stability of perovskite solar cells (PSCs). Identifying molecular materials that achieve this purpose is a key target of current research efforts. Here, adamantane (AD) and 1-adamantylamine (ADA) are introduced as molecular modulators to abate electronic defects present within the bulk and at the perovskite-hole conductor interface. To this effect, the modulator is added either into the antisolvent (AS) to precipitate it together with the perovskite (AS method) or they are spin coated (SC) onto its surface (SC method). Time-resolved photoluminescence measurements show substantially longer lifetimes for perovskite films treated with AD and ADA compared to the reference sample. In line with this observation, it is found that the presence of AD and ADA molecules at the interface between the perovskite film and the hole conductor increases all photovoltaic metrics, in particular the open circuit photovoltage (V-oc) as well as the operational stability of the PSC.
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