Evaluation of hetero and back contact junctions of CZTSe: Ge bilayers solar cells with Modulus Spectroscopy

Sanghyun Lee; Kent J. Price; Edgardo Saucedo

doi:10.1109/PVSC43889.2021.9519064

Evaluation of hetero and back contact junctions of CZTSe: Ge bilayers solar cells with Modulus Spectroscopy

Sanghyun Lee, Kent J. Price, Edgardo Saucedo

Producción científica: Conference contribution › revisión exhaustiva

1 Cita (Scopus)

Resumen

We fabricated and analyzed CZTSe: Ge bi-layers solar cells to accurately evaluate the electrical structure at hetero and back contact junctions by modulus spectroscopy. Two separate built-in potentials of hetero and back contact junctions are extensively investigated to describe qualitative each junction model of CZTSe: Ge bilayers devices. Fabricated devices are analyzed with an equivalent circuit model, and LEVM/LEMW software resolved two different parallel circuit branch components. Modeling with LEVM/LEMW software accurately fits our model to modulus and impedance spectra in the given testing frequency domain. Using TCAD numerical simulations, we examine a variety of device models with a set of built-in potentials for appropriate parallel circuits with two capacitance and two resistance (R2=0.99). Our study shows that heterojunction built-in potential is 801 meV, which is 10 % smaller than a theoretical value, 894 meV. Conversely, the built-in potential of the back contact junction is 428 meV. Total built-in potential is 373 meV.

Idioma original	English
Título de la publicación alojada	2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021
Páginas	403-405
Número de páginas	3
ISBN (versión digital)	9781665419222
DOI	https://doi.org/10.1109/PVSC43889.2021.9519064
Estado	Published - jun 20 2021
Evento	48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, United States Duración: jun 20 2021 → jun 25 2021

Serie de la publicación

Nombre	Conference Record of the IEEE Photovoltaic Specialists Conference
ISSN (versión impresa)	0160-8371

Conference

Conference	48th IEEE Photovoltaic Specialists Conference, PVSC 2021
País/Territorio	United States
Ciudad	Fort Lauderdale
Período	6/20/21 → 6/25/21

Nota bibliográfica

Publisher Copyright:
© 2021 IEEE.

Financiación

ACKNOWLEDGEMENT Authors acknowledges the generous support by the Duke Energy Foundation and CSRC at Indiana State University.

Financiadores	Número del financiador
Duke Energy Foundation
Indiana State University
Colorado Society for Respiratory Care

ASJC Scopus subject areas

Control and Systems Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1109/PVSC43889.2021.9519064

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title = "Evaluation of hetero and back contact junctions of CZTSe: Ge bilayers solar cells with Modulus Spectroscopy",

abstract = "We fabricated and analyzed CZTSe: Ge bi-layers solar cells to accurately evaluate the electrical structure at hetero and back contact junctions by modulus spectroscopy. Two separate built-in potentials of hetero and back contact junctions are extensively investigated to describe qualitative each junction model of CZTSe: Ge bilayers devices. Fabricated devices are analyzed with an equivalent circuit model, and LEVM/LEMW software resolved two different parallel circuit branch components. Modeling with LEVM/LEMW software accurately fits our model to modulus and impedance spectra in the given testing frequency domain. Using TCAD numerical simulations, we examine a variety of device models with a set of built-in potentials for appropriate parallel circuits with two capacitance and two resistance (R2=0.99). Our study shows that heterojunction built-in potential is 801 meV, which is 10 \% smaller than a theoretical value, 894 meV. Conversely, the built-in potential of the back contact junction is 428 meV. Total built-in potential is 373 meV.",

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Lee, S, Price, KJ & Saucedo, E 2021, Evaluation of hetero and back contact junctions of CZTSe: Ge bilayers solar cells with Modulus Spectroscopy. En 2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021. Conference Record of the IEEE Photovoltaic Specialists Conference, pp. 403-405, 48th IEEE Photovoltaic Specialists Conference, PVSC 2021, Fort Lauderdale, United States, 6/20/21. https://doi.org/10.1109/PVSC43889.2021.9519064

Evaluation of hetero and back contact junctions of CZTSe: Ge bilayers solar cells with Modulus Spectroscopy. / Lee, Sanghyun; Price, Kent J.; Saucedo, Edgardo.
2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021. 2021. p. 403-405 (Conference Record of the IEEE Photovoltaic Specialists Conference).

Producción científica: Conference contribution › revisión exhaustiva

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Evaluation of hetero and back contact junctions of CZTSe: Ge bilayers solar cells with Modulus Spectroscopy

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