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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Filterless short-wavelength infrared ultra-narrowband planar-type Ge photodetector

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短波红外自滤波超窄带锗平面结构光电探测器

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Mar.2025, Vol.48 No.3: 343-347

DOI: 10.3969/j.issn.1003-5060.2025.03.008

Authors

FANG Changyue, WANG Li, WANG Yifei, LIU Yujian, LUO Linbao

(School of Microelectronics, Hefei University of Technology, Hefei 230601, China)

Abstract and Keywords

Abstract: 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.

Keywords: narrowband detection; germanium; Schottky junction; short-wavelength infrared; photodetector

作者信息

方昶月，王莉，王艺飞，柳宇健，罗林保

（合肥工业大学微电子学院，安徽合肥230601）

摘要和关键词

摘要: 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。

关键词: 窄带探测；锗；肖特基结；短波红外；光电探测器

Funding

安徽省自然科学基金资助项目（2108085MF229）

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