Direct Writing of Fluorescent Semiconducting Nanoparticles on Polydimethylsiloxane by Ultrashort-Pulsed Laser Processing: Implications for Electronic and Photonic Device Fabrication
Direct Writing of Fluorescent Semiconducting Nanoparticles on Polydimethylsiloxane by Ultrashort-Pulsed Laser Processing: Implications for Electronic and Photonic Device Fabrication
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DOI：
10.1021/acsanm.2c05134
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发表时间：
2023-01
影响因子：
5.9
通讯作者：
S. Hayashi;M. Terakawa
中科院分区：
文献类型：
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作者：
S. Hayashi;M. Terakawa
激光直写（LDW）方法提供了各种纳米晶体（NC）的快速、按需和高分辨率图案化。在许多LDW方法中，激光诱导改性方法是一种有吸引力的方法，因为NC可以直接在聚合物上图案化而无需补充制备步骤。先前，已经表明聚二甲基硅氧烷的激光照射导致由石墨碳晶体（GC）和碳化硅NC（SiC-NC）组成的复合结构。然而，由于相对于GC的低形成含量，因此没有报道所得到的结构的SiC-NC特有的材料性质。在这项研究中，通过利用高重复飞秒激光，我们证明了GC和SiC-NC的可控形成，以实现首次表现出可测量的半导体行为的复合结构。此外，从所得结构中观察到荧光分子大小的SiC-NC的光致发光发射。所呈现的结果将引发一波利用超短脉冲激光对聚合物进行激光诱导改性的想法，这些想法将用于制造各种电子和光子器件，如存储器存储器件，光电子器件和光学传感器。
Laser direct-write (LDW) methods offer the rapid, on-demand, and high-resolution patterning of a variety of nanocrystals (NCs). Out of the many LDW methods, the laser-induced modification method is an attractive method as NCs can be directly patterned on polymers without supplementary preparation steps. Previously, it has been indicated that the laser irradiation of polydimethylsiloxane results in composite structures composed of graphitic carbon crystals (GCs) and silicon carbide NCs (SiC-NCs). However, material properties distinctive of SiC-NCs have not been reported for the resulting structures owing to the low formation content relative to those of GCs. In this study by utilizing a high-repetition femtosecond laser, we demonstrate the controlled formation of GCs and SiC-NCs to achieve a composite structure exhibiting a measurable semiconducting behavior for the first time. Moreover, photoluminescence emissions distinctive of fluorescent molecular-sized SiC-NCs were observed from the resulting structures. The presented results will trigger a wave of ideas utilizing ultrashort-pulsed lasers for the laser-induced modification of polymers toward the fabrication of a wide range of electronic and photonic devices, such as memory storage devices, photovoltaics, and optical sensors.