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Title page for ETD etd-03282016-105353


Type of Document Dissertation
Author Wang, Wenyi
URN etd-03282016-105353
Title Enhancing Light-matter Interaction in Ultrathin Films using Optical Nanostructures
Degree PhD
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Jason G. Valentine Committee Chair
Kirill Bolotin Committee Member
Richard F. Haglund Jr. Committee Member
Sharon M. Weiss Committee Member
Yaqiong Xu Committee Member
Keywords
  • Two-dimensional materials
  • Optoelectronics
  • Photodetection
  • Modulation
  • Metamaterial
  • Plasmonics
Date of Defense 2016-03-22
Availability unrestricted
Abstract
Ultrathin films including two-dimensional materials and transparent conductive oxide nano-films are excellent candidates for future optoelectronic devices. However, external quantum efficiencies of the ultrathin film-based devices are typically limited due to their small physical thickness. The practical application of these ultrathin films therefore requires integration with optical nanostructures to enhance light-matter interaction in the thin films. In this work, I will present my efforts to modify the interaction between light and ultrathin films using different approaches, including hot electron injection, integration with Fano-resonant photonic crystals, and use a hybrid mode combining an epsilon-near-zero mode with a Huygens’ dielectric metasurface. The optoelectronic devices demonstrated based on these integrations result in significant increases in absorption, photoresponsivity, and modulation depth.
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