Optical spectroscopy and photocurrent measurements of 2d materials
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Authors
Sharma, Mukul
Issue Date
2024-08
Type
Electronic thesis
Thesis
Thesis
Language
en_US
Keywords
Chemical engineering
Alternative Title
Abstract
Light-matter interactions in two-dimensional (2D) layered materials have attracted immense interest in the last few years, especially after the discovery of Graphene. These novel class of materials find their application in various optoelectronic devices which were earlier dominated by Silicon as an active material. However, to harness the full potential of these materials, it is necessary to be able to manipulate light- matter interactions so that these materials could be tailored or optimized for different applications and develop metrology tools and knowledge base to rationally design operating device conditions. In this work, I am going to talk about tuning light-matter interactions using these approaches and a Raman spectroscopy based thermometry tool for probing local temperature.This work is divided into four sections. In the first and second part, I am going to discuss electrostatic gating and electrochemical intercalation based modulation of Indium Selenide (InSe), a group iii-vi 2D layered VdW material and in situ observations of intercalation induced changes. In the third part, I am going to discuss Raman spectroscopy based metrology tool to probe heat related effects in graphene based structures. Finally, a chiral perovskite material is demonstrated for spin injection medium in Tungsten Diselenide (WSe2), a well known 2D material largely known for its spin-valley locking effects.
Description
August 2024
School of Engineering
School of Engineering
Full Citation
Publisher
Rensselaer Polytechnic Institute, Troy, NY