短波红外自滤波超窄带锗平面结构光电探测器

文章基于锗平面肖特基结构,通过调控光生载流子收集过程中的复合作用,成功研制探测波长位于1290 nm、半高宽仅为8 nm且无需滤光片的自驱动短波红外光电探测器。该器件性能稳定,抗干扰能力强,在接收1290 nm光信号时,器件的串扰值在1278~1311 nm波长范围以外均小于-10 dB,可应用于红外系统信息的采集。文章研究结果可以为相关窄带探测器的设计提供理论和实验参考。

In this work, a filterless self-powered short-wavelength infrared narrowband photodetector was realized based on a planar-type Ge Schottky structure by adjusting the recombination in the photogenerated carrier collection process, with a response peak located at 1 290 nm. And the full width at half maximum of the device was only 8 nm. It exhibited high stability and anti-interference ability. Unless the wavelength of the background light was in the range of 1 278-1 311 nm, the crosstalk value of the device remained below -10 dB. It is shown that the device can be applied to the infrared optoelectronic systems, which provides theoretical and experimental references for the design of related narrowband photodetectors.