Circularly polarized light detection by a chiral organic semiconductor transistor
Circularly polarized light detection by a chiral organic semiconductor transistor
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DOI：
10.1038/nphoton.2013.176
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发表时间：
2013-08-01
期刊：
影响因子：
35
通讯作者：
Campbell, Alasdair J.
中科院分区：
文献类型：
--
作者：
Yang, Ying;da Costa, Rosenildo Correa;Campbell, Alasdair J.
圆偏振光是许多光子技术的核心，包括基于圆偏振光的椭圆偏振层析成像（1,2）、自旋信息的光通信(3)和基于量子的光学计算和信息处理（4,5）。为了充分发挥这些技术的潜力，需要实现能够检测圆偏振光的手性或“手性”的微型集成设备。有机场效应晶体管的有源半导体层是一种有机材料，可以简单地制造超薄、紧凑的器件（6-8）。在这里，我们展示了一个圆偏振光检测有机场效应晶体管基于不对称纯，螺旋形手性半导体分子被称为螺旋烯(9)。重要的是，我们发现了对圆偏振光的高度特异性光响应，这与螺旋烯分子的手性直接相关。我们相信，这为在高度集成的光子平台中检测圆偏振光的手性开辟了可能性。
Circularly polarized light is central to many photonic technologies, including circularly polarized ellipsometry-based tomography(1,2), optical communication of spin information(3) and quantum-based optical computing and information processing(4,5). To develop these technologies to their full potential requires the realization of miniature, integrated devices that are capable of detecting the chirality or 'handedness' of circularly polarized light. Organic field-effect transistors, in which the active semiconducting layer is an organic material, allow the simple fabrication of ultrathin, compact devices(6-8). Here we demonstrate a circularly polarized light-detecting organic field-effect transistor based on an asymmetrically pure, helically shaped chiral semiconducting molecule known as a helicene(9). Importantly, we find a highly specific photoresponse to circularly polarized light, which is directly related to the handedness of the helicene molecule. We believe that this opens up the possibility for the detection of the chirality of circularly polarized light in a highly integrated photonic platform.