摘要
二维材料范德瓦尔斯异质结构凭借其无需晶格匹配约束的特性,在微型化多波段光电探测领域展现出独特优势。本研究创新设计并构筑了一种由WS_(2)/MoTe_(2)/MoS_(2)vdWs异质结构组成的新型红外探测器结构,该结构是由N型WS_(2)、P型MoTe_(2)、N型MoS_(2)组成的NPN型异质结。光电特性表征显示,该异质结具有卓越的光电探测能力,在532 nm激光波长下具有94 A/W的高响应度,2.5×10^(11)Jones的高比探测率,2.2×10^(4)%的高外量子效率,2.3 ms/5.1 ms的快速上升和下降响应时间,并可在可见光至近红外光谱区间(截止波长延伸至1310 nm)实现宽谱光响应。这一研究成果为开发室温环境下工作的宽谱红外探测器提供了新思路与新方法。
The two-dimensional van der Waals heterostructure exhibits unique advantages in the field of miniaturized multi band optoelectronic detection due to its property of not requiring lattice matching constraints.This study innovatively designed and constructed a novel infrared detector structure composed of WS_(2)/MoTe_(2)/MoS_(2) vdWs heterojunction,which is an NPN heterojunction composed of N-type WS_(2),P-type MoTe_(2),and N-type MoS_(2).The optoelectronic characterization shows that the heterojunction has excellent optoelectronic detection capability,with a high responsivity of 94 A/W at a laser wavelength of 532 nm,a high specific detection rate of 2.5×10^(11) Jones,a high external quantum efficiency of 2.2×10^(4)%,rapid rise and fall response times of 2.3 ms/5.1 ms,and a wide spectral response in the visible to near-infrared spectral range(cutoff wavelength extended to 1310 nm).This research achievement provides new ideas and methods for developing broadband infrared detectors that operate at room temperature.
作者
李萌
严一鸣
刘秋佐
钟国舜
鹿利单
LI Meng;YAN Yi-ming;LIU Qiu-zuo;ZHONG Guo-shun;LU Li-dan(The 11th Research Institute of CETC,Beijing 100015,China;Second Military Representative Office of the Army Equipment Department Stationed in Beijing,Beijing 100012,China;Beijing Information Science&Technology University,Beijing 100016,China)
出处
《激光与红外》
北大核心
2025年第8期1248-1252,共5页
Laser & Infrared
