Sub-Bandgap Features in CdSeTe Solar Cells: Parsing the Roles of Material Properties and Cell Optics

Arthur Onno; Siming Li; Carey Reich; Adam Danielson; William Weigand; Walajabad Sampath; Darius Kuciauskas; Zachary Holman

doi:10.1109/PVSC43889.2021.9518829

Sub-Bandgap Features in CdSeTe Solar Cells: Parsing the Roles of Material Properties and Cell Optics

Arthur Onno, Siming Li, Carey Reich, Adam Danielson, William Weigand, Walajabad Sampath, Darius Kuciauskas, Zachary Holman

Chemistry and Nanoscience

Research output: Contribution to conference › Paper › peer-review

3 Scopus Citations

Abstract

In this contribution, we investigate why different dopant species and back-contact architectures lead to different sub-bandgap behaviors in CdSeTe solar cells. Through extraction of the absorptance from photoluminescence spectra, we parse the contributions from material properties and from cell optics. We show that, as expected, arsenic doping leads to an increase in sub-bandgap features over traditional copper doping, and that this is a material property of arsenic-doped CdSeTe. Conversely, the increase in sub-bandgap absorption and emission using alternative back contact architectures can be attributed to the cell optics, and more specifically to the increased reflectance of the back interface, leading to at least a doubling of the pathlength for sub-bandgap photons.

Original language	American English
Pages	1754-1757
Number of pages	4
DOIs	https://doi.org/10.1109/PVSC43889.2021.9518829 https://doi.org/10.1109/PVSC43889.2021.9518829
State	Published - 20 Jun 2021
Event	48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, United States Duration: 20 Jun 2021 → 25 Jun 2021

Conference

Conference	48th IEEE Photovoltaic Specialists Conference, PVSC 2021
Country/Territory	United States
City	Fort Lauderdale
Period	20/06/21 → 25/06/21

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

NREL Publication Number

NREL/CP-5900-80316

Keywords

arsenic doping
cadmium selenide telluride
photoluminescence
sub-bandgap features

Access to Document

Cite this

Onno, A., Li, S., Reich, C., Danielson, A., Weigand, W., Sampath, W., Kuciauskas, D., & Holman, Z. (2021). Sub-Bandgap Features in CdSeTe Solar Cells: Parsing the Roles of Material Properties and Cell Optics. 1754-1757. Paper presented at 48th IEEE Photovoltaic Specialists Conference, PVSC 2021, Fort Lauderdale, United States. https://doi.org/10.1109/PVSC43889.2021.9518829, https://doi.org/10.1109/PVSC43889.2021.9518829

@conference{5016ac63b9a34df6952d06008397b182,

title = "Sub-Bandgap Features in CdSeTe Solar Cells: Parsing the Roles of Material Properties and Cell Optics",

abstract = "In this contribution, we investigate why different dopant species and back-contact architectures lead to different sub-bandgap behaviors in CdSeTe solar cells. Through extraction of the absorptance from photoluminescence spectra, we parse the contributions from material properties and from cell optics. We show that, as expected, arsenic doping leads to an increase in sub-bandgap features over traditional copper doping, and that this is a material property of arsenic-doped CdSeTe. Conversely, the increase in sub-bandgap absorption and emission using alternative back contact architectures can be attributed to the cell optics, and more specifically to the increased reflectance of the back interface, leading to at least a doubling of the pathlength for sub-bandgap photons.",

keywords = "arsenic doping, cadmium selenide telluride, photoluminescence, sub-bandgap features",

author = "Arthur Onno and Siming Li and Carey Reich and Adam Danielson and William Weigand and Walajabad Sampath and Darius Kuciauskas and Zachary Holman",

note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 48th IEEE Photovoltaic Specialists Conference, PVSC 2021 ; Conference date: 20-06-2021 Through 25-06-2021",

year = "2021",

month = jun,

day = "20",

doi = "10.1109/PVSC43889.2021.9518829",

language = "American English",

pages = "1754--1757",

}

Onno, A, Li, S, Reich, C, Danielson, A, Weigand, W, Sampath, W, Kuciauskas, D & Holman, Z 2021, 'Sub-Bandgap Features in CdSeTe Solar Cells: Parsing the Roles of Material Properties and Cell Optics', Paper presented at 48th IEEE Photovoltaic Specialists Conference, PVSC 2021, Fort Lauderdale, United States, 20/06/21 - 25/06/21 pp. 1754-1757. https://doi.org/10.1109/PVSC43889.2021.9518829, https://doi.org/10.1109/PVSC43889.2021.9518829

TY - CONF

T1 - Sub-Bandgap Features in CdSeTe Solar Cells: Parsing the Roles of Material Properties and Cell Optics

AU - Onno, Arthur

AU - Li, Siming

AU - Reich, Carey

AU - Danielson, Adam

AU - Weigand, William

AU - Sampath, Walajabad

AU - Kuciauskas, Darius

AU - Holman, Zachary

PY - 2021/6/20

Y1 - 2021/6/20

N2 - In this contribution, we investigate why different dopant species and back-contact architectures lead to different sub-bandgap behaviors in CdSeTe solar cells. Through extraction of the absorptance from photoluminescence spectra, we parse the contributions from material properties and from cell optics. We show that, as expected, arsenic doping leads to an increase in sub-bandgap features over traditional copper doping, and that this is a material property of arsenic-doped CdSeTe. Conversely, the increase in sub-bandgap absorption and emission using alternative back contact architectures can be attributed to the cell optics, and more specifically to the increased reflectance of the back interface, leading to at least a doubling of the pathlength for sub-bandgap photons.

AB - In this contribution, we investigate why different dopant species and back-contact architectures lead to different sub-bandgap behaviors in CdSeTe solar cells. Through extraction of the absorptance from photoluminescence spectra, we parse the contributions from material properties and from cell optics. We show that, as expected, arsenic doping leads to an increase in sub-bandgap features over traditional copper doping, and that this is a material property of arsenic-doped CdSeTe. Conversely, the increase in sub-bandgap absorption and emission using alternative back contact architectures can be attributed to the cell optics, and more specifically to the increased reflectance of the back interface, leading to at least a doubling of the pathlength for sub-bandgap photons.

KW - arsenic doping

KW - cadmium selenide telluride

KW - photoluminescence

KW - sub-bandgap features

UR - http://www.scopus.com/inward/record.url?scp=85115966566&partnerID=8YFLogxK

U2 - 10.1109/PVSC43889.2021.9518829

DO - 10.1109/PVSC43889.2021.9518829

M3 - Paper

AN - SCOPUS:85115966566

SP - 1754

EP - 1757

T2 - 48th IEEE Photovoltaic Specialists Conference, PVSC 2021

Y2 - 20 June 2021 through 25 June 2021

ER -

Sub-Bandgap Features in CdSeTe Solar Cells: Parsing the Roles of Material Properties and Cell Optics

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

Access to Document

Other files and links

Fingerprint

Cite this