Ben Chen, Xiping He, Jiayi Yu, Zhiyuan He, Chencheng Peng, Feihu Zhang, Runda Guo* and Lei Wang*,
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引用次数: 0
摘要
自组装单层膜(SAMs)在等离子体发光二极管中有着广泛的应用。然而,大多数SAM分子是两亲性的,容易在溶液中形成胶束,从而影响薄膜的均匀性。在这项工作中,我们使用两个SAM分子构建了一个杂交SAM。通过将各组分的浓度降低到临界胶束浓度以下,可抑制胶束的形成。此外,不同的SAM分子之间的空间位阻和疏水性降低了混合胶束的稳定性。抑制了SAM胶束的形成,使得埋藏界面的覆盖更加完全。利用该混合SAM,热蒸发绿色PeLED的EQE达到了13.28%,达到了该领域的先进水平。此外,该器件在高电流密度(@ 110 mA cm-2)下保持8.30%的高EQE。该策略提供了一种可行的方法,可以规避与等离子体发光二极管中地对空导弹相关的限制,从而提高其应用潜力。
Hybrid Self-Assembled Molecules Reduce Interfacial Defects in Perovskite Light-Emitting Diodes
Self-assembled monolayers (SAMs) have exhibited widespread application in PeLEDs. However, most SAM molecules are amphiphilic, prone to forming micelles in solutions, which affects the uniformity of the film. In this work, we employed two SAM molecules to construct a hybrid SAM. By reducing the concentration of each component below the critical micelle concentration, the formation of micelles is inhibited. Additionally, the stability of mixed micelles was decreased through steric hindrance and hydrophobicity between different SAM molecules. SAM micelle formation is inhibited, resulting in more complete coverage of the buried interface. By utilization of this hybrid SAM, the thermally evaporated green PeLED achieved an EQE of 13.28%, representing advanced level performance in this field. Moreover, the devices maintained a high EQE of 8.30% at high current densities (@ 110 mA cm–2). This strategy offers a viable approach to circumvent the limitations associated with SAMs in PeLEDs, thereby enhancing their application potential.
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.