典型文献
Ultrathin oxide controlled photocurrent generation through a metal–insulator–semiconductor heterojunction
文献摘要：
Recent advances in nanoscale lasers, amplifiers, and nonlinear optical converters have demonstrated the unprecedented potential of metal–insulator–semiconductor (MIS) structures as a versatile platform to realize integrated photonics at the nanoscale. While the electric field enhancement and confinement have been discussed intensively in MIS based plasmonic structures, little is known about the carrier redistribution across the heterojunction and photocurrent transport through the oxide. Herein, we investigate the photo-generated charge transport through a single CdSe microbelt-Al2O3-Ag heterojunction with oxide thickness varying from 3 nm to 5 nm. Combining photocurrent measurements with finite element simulations on electron (hole) redistribution across the heterojunction, we are able to explain the loss compensation observed in hybrid plasmonic waveguides at substantially reduced pump intensity based on MIS geometry compared to its photonic counterpart. We also demonstrate that the MIS configuration offers a low-dark-current photodetection scheme, which can be further exploited for photodetection applications.
文献关键词：
中图分类号：
作者姓名：
Ning Liu;Xiaohong Yan;Long Gao;Sergey Beloshapkin;Christophe Silien;Hong Wei
作者机构：
Department of Physics, University of Limerick, Limerick, Ireland;Bernal Institute, University of Limerick, Limerick, Ireland;Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;e-mail: ning.liu@ul.ie;e-mail: weihong@iphy.ac.cn
文献出处：
引用格式：
[1]Ning Liu;Xiaohong Yan;Long Gao;Sergey Beloshapkin;Christophe Silien;Hong Wei-.Ultrathin oxide controlled photocurrent generation through a metal–insulator–semiconductor heterojunction)[J].光子学研究（英文）,2022(08):1996
A类：
microbelt
B类：
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AB值：
0.644357
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