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Solution-processed organometallic quasi-two-dimensional nanosheets as a hole buffer layer for organic light-emitting devices
Nanoscale ( IF 5.8 ) Pub Date : 2020/03/05 , DOI: 10.1039/d0nr00240b Shihao Liu 1, 2, 3, 4, 5 , Ying-Chiao Wang 1, 2, 3, 4 , Chi-Ming Chang 6, 7, 8, 9 , Takeshi Yasuda 2, 3, 4, 10 , Naoya Fukui 4, 11, 12, 13 , Hiroaki Maeda 4, 11, 12, 13 , Peihua Long 4, 11, 12, 13 , Kazuo Nakazato 4, 14, 15, 16 , Wen-Bin Jian 6, 7, 8, 9 , Wenfa Xie 5, 17, 18, 19, 20 , Kazuhito Tsukagoshi 1, 2, 3, 4 , Hiroshi Nishihara 4, 11, 12, 13
Nanoscale ( IF 5.8 ) Pub Date : 2020/03/05 , DOI: 10.1039/d0nr00240b Shihao Liu 1, 2, 3, 4, 5 , Ying-Chiao Wang 1, 2, 3, 4 , Chi-Ming Chang 6, 7, 8, 9 , Takeshi Yasuda 2, 3, 4, 10 , Naoya Fukui 4, 11, 12, 13 , Hiroaki Maeda 4, 11, 12, 13 , Peihua Long 4, 11, 12, 13 , Kazuo Nakazato 4, 14, 15, 16 , Wen-Bin Jian 6, 7, 8, 9 , Wenfa Xie 5, 17, 18, 19, 20 , Kazuhito Tsukagoshi 1, 2, 3, 4 , Hiroshi Nishihara 4, 11, 12, 13
Affiliation
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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.
中文翻译：
溶液处理的有机金属准二维纳米片作为有机发光器件的空穴缓冲层
二维（2D）vdW材料已集成到光电设备中，以实现出色的功能。但是，由于有限数量的无机2D材料及其沉积过程的高温要求，将大面积2D薄膜集成到有机发光器件（OLED）中仍然具有挑战性。由于二维有机金属材料的溶液合成以及无限的结构和功能多样性，其构造具有巨大的潜力。在这里，我们报道了一种利用有机配体与二价金属离子之间的油水界面配位反应来合成具有厘米级和可调厚度的准二维二维有机金属双（二硫代硅酸）镍（NiDT）纳米片的简便方法。NiDT纳米片可以直接集成到OLED中，用作空穴缓冲层和荧光固定介质，而无需借助转移过程。此外，具有NiDT纳米片的OLED不仅显示出与传统OLED相当的效率，而且将器件寿命延长了近2倍。这些结果为准二维有机金属纳米片用作大面积有机器件中的功能层开辟了一个新的维度。
更新日期：2020-04-03
中文翻译：
溶液处理的有机金属准二维纳米片作为有机发光器件的空穴缓冲层
二维（2D）vdW材料已集成到光电设备中，以实现出色的功能。但是，由于有限数量的无机2D材料及其沉积过程的高温要求，将大面积2D薄膜集成到有机发光器件（OLED）中仍然具有挑战性。由于二维有机金属材料的溶液合成以及无限的结构和功能多样性，其构造具有巨大的潜力。在这里，我们报道了一种利用有机配体与二价金属离子之间的油水界面配位反应来合成具有厘米级和可调厚度的准二维二维有机金属双（二硫代硅酸）镍（NiDT）纳米片的简便方法。NiDT纳米片可以直接集成到OLED中，用作空穴缓冲层和荧光固定介质，而无需借助转移过程。此外，具有NiDT纳米片的OLED不仅显示出与传统OLED相当的效率，而且将器件寿命延长了近2倍。这些结果为准二维有机金属纳米片用作大面积有机器件中的功能层开辟了一个新的维度。
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