课题组硕士生钟佳宏在国际纳米权威期刊Nano Research上发表论文
祝贺课题组成员钟佳宏同学在国际纳米权威期刊Nano Research上发表论文
近日,课题组成员钟佳宏同学在刘老师的指导下,以第一作者在国际纳米权威期刊《纳米研究》(Nano Research,影响因子8.5)上发表题为“High-Performance Polarization-Sensitive Photodetector based on a Few-Layered PdSe2 Nanosheet”(基于二维材料PdSe2高敏感极化偏振光探测器的研究)的实验论文。

图一:基于二维材料PdSe2高敏感极化偏振光探测器的研究
各向异性二维(2D)材料(如黑磷(BP),ReS2和GeSe)具有非凡的光学和电子性能,使其成为偏振敏感光电探测器的核心器件的组成部分。但是,这些材料的应用分别受到空气稳定性,响应时间和线性二向色比的挑战的极大限制。有趣的是,具有高空气稳定性的二硒化钯(PdSe2)是一种新兴的材料,由于其不对称的五边形晶格结构而具有强大的面内各向异性。我们使用微机械剥离成功制备了少层PdSe2,并通过偏振光分辨的吸收光谱测量证明了PdSe2具备了很强的线性二向色性。如此独特的线性二向色性,赋予PdSe2光电探测器强大的检测偏振光的能力。实验开展了针对5L PdSe2的光电探测器偏振相关的光电流测试,显示出器件具有检测偏振光的出色的能力,包括显著的光电流开/关比(> 102),相当快的响应时间(<11ms)和强大的线性二向色比(在532nm处Imax / Imin≈1.9)。本论文的研究是偏振敏感光电探测器发展的重要进展,这也是开辟基于二维材料光电探测器应用新途径的关键一步,推动了偏振光探测器的发展和创新,具有重要的科学意义。
论文链接:https://link.springer.com/article/10.1007/s12274-020-2804-y
Comments:
This article describes a promising development in the field of photodetection technology. The use of few-layered PdSe2 nanosheets as the active layer in a polarization-sensitive photodetector has shown high performance in terms of sensitivity and response time. This material has a high absorption coefficient, which leads to high responsivity and a fast response time. The polarization-sensitive nature of the photodetector allows for better control and analysis of light signals, making it useful in various applications such as optical communication, imaging, and sensing. This technology has the potential to make a significant impact in the photodetection industry, providing a more efficient and effective solution for various applications.