响应度
材料科学
光电二极管
光学
电容
光电子学
波导管
耗尽区
吸收(声学)
电场
光电探测器
物理
半导体
电极
量子力学
作者
Fangli Wang,Bojian Zhang,Liang Wang
出处
期刊:Applied Optics
[The Optical Society]
日期:2021-11-29
卷期号:60 (34): 10696-10696
被引量:2
摘要
Here we propose an inverted evanescently-coupled waveguide modified uni-traveling-carrier photodiode (IECWG MUTC-PD) and verify the character numerically. In this photodiode, the epitaxial structure is inverted from p-i-n to n-i-p, and a diluted waveguide is applied. The material of capacitance control layer is optimized to realize energy band compensation and capacitance control. Such structure possesses a large electric field in the whole depletion region and has a uniform light absorption, which improves the space charge effect. As a result, the PD achieves a 3-dB bandwidth of 71.9 GHz with a 35µm2 active area at -5V bias voltage and an internal responsivity of 0.59 A/W in 7-µm long short PD with a 200-nm-thick absorption layer.
科研通智能强力驱动
Strongly Powered by AbleSci AI