標題: Solution-processed organometallic quasi-two-dimensional nanosheets as a hole buffer layer for organic light-emitting devices
作者: Liu, Shihao
Wang, Ying-Chiao
Chang, Chi-Ming
Yasuda, Takeshi
Fukui, Naoya
Maeda, Hiroaki
Long, Peihua
Nakazato, Kazuo
Jian, Wen-Bin
Xie, Wenfa
Tsukagoshi, Kazuhito
Nishihara, Hiroshi
電子物理學系
Department of Electrophysics
公開日期: 7-Apr-2020
摘要: Two-dimensional (2D) vdW materials have been integrated into optoelectronic devices to achieve exceptional functionality. However, the integration of large-area 2D thin films into organic light-emitting devices (OLEDs) remains challenging because of the finite number of inorganic 2D materials and the high-temperature requirements of their deposition process. The construction of 2D organometallic materials holds immense potential because of their solution synthesis and unlimited structural and functional diversity. Here, we report a facile route using an oil-water interfacial coordination reaction between organic ligands and divalent metal ions to synthesize crystalline quasi-2D organometallic bis(dithiolato)nickel (NiDT) nanosheets with a centimeter scale and a tunable thickness. The NiDT nanosheets can be directly integrated into OLEDs for use as a hole buffer layer and a fluorescent mounting medium without the aid of a transfer process. Moreover, OLEDs with NiDT nanosheets show not only comparable efficiency to conventional OLEDs but also prolonged device lifetime by nearly 2 times. These results open up a new dimension to use quasi-2D organometallic nanosheets as functional layers in large-area organic devices.
URI: http://dx.doi.org/10.1039/d0nr00240b
http://hdl.handle.net/11536/154105
ISSN: 2040-3364
DOI: 10.1039/d0nr00240b
期刊: NANOSCALE
Volume: 12
Issue: 13
起始頁: 6983
結束頁: 6990
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