论文标题
用ePraphene的金属 - 肺导体 - 金属检测器中的高效紫外线检测
Highly efficient UV detection in a metal-semiconductor-metal detector with epigraphene
论文作者
论文摘要
我们表明，在高温（t> 1850°C）生长的硅碳化硅（Epigraphene）上的外延石墨烯很容易充当实施具有出色性能的太阳盲紫外线（UV）探测器的材料。我们介绍了峰值的峰值金属 - 基因导剂金属（MSM）检测器，峰值外部量子效率为〜85％，波长为250-280 nm，当考虑反射损失时，对应于几乎100％的内部量子效率。在不对称设备中可能实现零偏置操作，对紫外线的响应率保持在r = 134 mA/w的高度，使其成为自动检测器。低深色电流IO〜50 fa转化为估计的记录高特异性探测率d = 3.5 x 10^15琼斯。我们证明的性能以及材料可重复性，使Epraphene在技术上具有吸引力，可用于实施以低处理工作的高性能平面MSM设备，包括多像素UV传感器阵列，适用于许多实际应用。
We show that epitaxial graphene on silicon carbide (epigraphene) grown at high temperatures (T > 1850 °C) readily acts as material for implementing solar-blind ultraviolet (UV) detectors with outstanding performance. We present centimeter-sized epigraphene metal-semiconductor-metal (MSM) detectors with peak external quantum efficiency of ~ 85% for wavelengths 250-280 nm, corresponding to nearly 100% internal quantum efficiency when accounting for reflection losses. Zero bias operation is possible in asymmetric devices, with the responsivity to UV remaining as high as R = 134 mA/W, making this a self-powered detector. The low dark currents Io ~50 fA translate into an estimated record high specific detectivity D = 3.5 x 10^15 Jones. The performance that we demonstrate, together with material reproducibility, renders epigraphene technologically attractive to implement high-performance planar MSM devices with a low processing effort, including multi-pixel UV sensor arrays, suitable for a number of practical applications.
