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Interface Optimization for Improved Photovoltaic Devices


Glaudell, Rebecca Denise (2022) Interface Optimization for Improved Photovoltaic Devices. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/kxdy-h496.


The wide band gaps and superior conductivity of ZnSₓSe₁₋ₓ semiconductors to amorphous Si suggest an alternative carrier-selective contact in silicon heterojunction solar cells. Electron-selective ZnSₓSe₁₋ₓ front contacts on p-type c-Si solar cells are explored by simulating in Sentaurus TCAD a large design parameter space informed by experimentally determined optoelectronic properties. Comparable performance to experimental and simulated p-SHJ reference devices is shown, with a champion simulated device efficiency of 20.8%. X-ray photoelectron spectroscopy is used to measure band offsets at interfaces for the aforementioned ZnSₓSe₁₋ₓ-c-Si photovoltaic devices as well as various carrier-selective contacts and passivation layers for GaAs photovoltaic devices.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:photovoltaics, ZnS, ZnSe, Si, GaAs, MBE, XPS
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Atwater, Harry Albert
Thesis Committee:
  • Hsieh, David (chair)
  • Refael, Gil
  • Scherer, Axel
  • Atwater, Harry Albert
Defense Date:9 August 2021
Funding AgencyGrant Number
NSF Graduate Research Fellowship1144469
Department of Energy (DOE)DE-EE0006335
Department of Energy (DOE)DE-EE0004946
Record Number:CaltechTHESIS:06022022-002941282
Persistent URL:
Related URLs:
URLURL TypeDescription adapted for Chapter 8 adapted for Chapters 2-6, 8 adapted for Chapter 8 adapted for Chapter 3, 6, 8 adapted for Chapter 3 adapted for Chapter 4 adapted for Chapter 1, 4 adapted for Chapter 8
Glaudell, Rebecca Denise0000-0001-5701-2932
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14933
Deposited By: Rebecca Glaudell
Deposited On:02 Jun 2022 23:52
Last Modified:08 Nov 2023 00:12

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