LOW DARK CURRENT AND HIGH LINEARITY INGAAS MSM PHOTODETECTORS

被引:6
作者
CHYI, JI [1 ]
WEI, TS [1 ]
HONG, JW [1 ]
LIN, W [1 ]
TU, YK [1 ]
机构
[1] MINIST TRANSPORTAT & COMMUN,TELECOMMUN LABS,CHUNGLI,TAIWAN
关键词
METAL-SEMICONDUCTOR-METAL STRUCTURES; PHOTODETECTORS;
D O I
10.1049/el:19940215
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
InGaAs metal-semiconductor-metal photodetectors with various barrier enhancement layers have been investigated. The responsivity at 1.55 mum wavelength varies between 0.21 and 0.43 A/W depending on layer structure, bias voltage and photosensitive area. Using a pseudomorphic In0.9Ga0.1P cap layer on InP for Schottky contacts, devices exhibit dark current densities as low as 44 muA/cm2. The responsivity is also much more linear than those of conventional devices with respect to both bias voltage and incident optical power level.
引用
收藏
页码:355 / 356
页数:2
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