Interface Optimization for Improved Photovoltaic Devices

Citation

Glaudell, Rebecca Denise (2022) Interface Optimization for Improved Photovoltaic Devices. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/kxdy-h496. https://resolver.caltech.edu/CaltechTHESIS:06022022-002941282

Abstract

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

Funders:

Funding Agency	Grant Number
NSF Graduate Research Fellowship	1144469
Department of Energy (DOE)	DE-EE0006335
NSF	EEC-1041895
Department of Energy (DOE)	DE-EE0004946

Record Number:

CaltechTHESIS:06022022-002941282

Persistent URL:

https://resolver.caltech.edu/CaltechTHESIS:06022022-002941282

DOI:

10.7907/kxdy-h496

Related URLs:

URL	URL Type	Description
https://doi.org/10.1109/pvsc45281.2020.9300477	DOI	Article adapted for Chapter 8
https://doi.org/10.1109/PVSC.2018.8548022	DOI	Article adapted for Chapters 2-6, 8
https://doi.org/10.1109/PVSC43889.2021.9518976	DOI	Article adapted for Chapter 8
https://doi.org/10.1109/PVSC43889.2021.9518579	DOI	Article adapted for Chapter 3, 6, 8
https://doi.org/10.1021/acsami.1c11122	DOI	Article adapted for Chapter 3
https://doi.org/10.1021/acs.nanolett.9b01246	DOI	Article adapted for Chapter 4
https://doi.org/10.1109/PVSC45281.2020.9300460	DOI	Article adapted for Chapter 1, 4
https://doi.org/10.1109/PVSC43889.2021.9518411	DOI	Article adapted for Chapter 8

ORCID:

Author	ORCID
Glaudell, Rebecca Denise	0000-0001-5701-2932

Default Usage Policy:

No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

14933

Collection:

CaltechTHESIS

Deposited By:

Rebecca Glaudell

Deposited On:

02 Jun 2022 23:52

Last Modified:

08 Nov 2023 00:12

Thesis Files

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