Emily J. Dalley, Leo C. Bloxham, Jyorthana R. Muralidhar, Perry W. Martin, Ian J. Kim, Connor G. Bischak
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引用次数: 0
Abstract
Two-dimensional (2D) perovskites with n-alkylammonium cations often undergo a solid–solid phase transition upon changes in pressure or temperature, during which the organic cations undergo an order-to-disorder chain-melting transition. Here, we show that blending halides and organic cations of varying lengths decreases the phase transition temperature of Cu- and Mn-based 2D perovskites. The magnitude of this decrease depends on the relative lengths of the two n-alkylammonium cations. For instance, blending n-decylammonium (DA) with n-undecylammonium (UDA) results in a 5 °C decrease in the phase transition temperature compared to pure DA2CuBr4. In contrast, blending DA with n-dodecylammonium (DDA) causes a 25 °C decrease. Furthermore, we found that blending Cu2+ and Mn2+ has a minimal effect on the phase transition temperature due to similar lattice spacing between the inorganic layers in DA2CuCl4 and DA2MnCl4. Our study suggests new design principles for tuning structural phase transitions in 2D perovskites through alloying halides, organic cations, and metal cations.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.