Bandgap Dependence of Near-Conduction Band State in (AgyCu1-y)(InXGa1-x)Se2 Solar Cells

Michael Miller; Alexandra Bothwell; Nicholas Valdes; Stefan Paetel; Rouin Farshchi; Ana Kanevce; William Shafarman; Darius Kuciauskas; Aaron Arehart

doi:10.1109/PVSC48317.2022.9938776

Bandgap Dependence of Near-Conduction Band State in (AgyCu1-y)(InXGa1-x)Se2 Solar Cells

Michael Miller
, Alexandra Bothwell
, Nicholas Valdes
, Stefan Paetel
, Rouin Farshchi
, Ana Kanevce
, William Shafarman
, Darius Kuciauskas
, Aaron Arehart

Chemistry and Nanoscience

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

2 Scopus Citations

Abstract

(Ag, CU) ( mathbf{In}, mathbf{Ga}) mathbf{Se}-{ boldsymbol{2}}-based solar cells have achieved high collection efficiencies, but defects still limit efficiencies well below the theoretical limit. The near-conduction band defect, typically observed at mathbf{E}-{ mathbf{V}} boldsymbol{+0.98} eV, has been ubiquitous across ( mathbf{Ag}, mathbf{Cu}) ( mathbf{In}, mathbf{Ga}) mathbf{Se}-{ boldsymbol{2}} samples from multiple vendors. The current work explores a wider range of composition and demonstrates the trap energy varies relative to the valence band but is approximately constant relative to the conduction band (Ec-0.13 eV). There is also no definitive dependence of the trap concentration on composition.

Original language	American English
Pages	1315-1318
Number of pages	4
DOIs	https://doi.org/10.1109/PVSC48317.2022.9938776 https://doi.org/10.1109/PVSC48317.2022.9938776
State	Published - 2022
Event	49th IEEE Photovoltaics Specialists Conference, PVSC 2022 - Philadelphia, United States Duration: 5 Jun 2022 → 10 Jun 2022

Conference

Conference	49th IEEE Photovoltaics Specialists Conference, PVSC 2022
Country/Territory	United States
City	Philadelphia
Period	5/06/22 → 10/06/22

Bibliographical note

Publisher Copyright:
© 2022 IEEE.

NLR Publication Number

NREL/CP-5900-85063

Keywords

ACIGS
ACIS
CIGS
CIS
deep level optical spectroscopy
defects
DLOS
traps

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Cite this

Miller, M., Bothwell, A., Valdes, N., Paetel, S., Farshchi, R., Kanevce, A., Shafarman, W., Kuciauskas, D., & Arehart, A. (2022). Bandgap Dependence of Near-Conduction Band State in (AgyCu1-y)(InXGa1-x)Se2 Solar Cells. 1315-1318. Paper presented at 49th IEEE Photovoltaics Specialists Conference, PVSC 2022, Philadelphia, United States. https://doi.org/10.1109/PVSC48317.2022.9938776, https://doi.org/10.1109/PVSC48317.2022.9938776

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title = "Bandgap Dependence of Near-Conduction Band State in (AgyCu1-y)(InXGa1-x)Se2 Solar Cells",

abstract = "(Ag, CU) ( mathbf\{In\}, mathbf\{Ga\}) mathbf\{Se\}-\{ boldsymbol\{2\}\}-based solar cells have achieved high collection efficiencies, but defects still limit efficiencies well below the theoretical limit. The near-conduction band defect, typically observed at mathbf\{E\}-\{ mathbf\{V\}\} boldsymbol\{+0.98\} eV, has been ubiquitous across ( mathbf\{Ag\}, mathbf\{Cu\}) ( mathbf\{In\}, mathbf\{Ga\}) mathbf\{Se\}-\{ boldsymbol\{2\}\} samples from multiple vendors. The current work explores a wider range of composition and demonstrates the trap energy varies relative to the valence band but is approximately constant relative to the conduction band (Ec-0.13 eV). There is also no definitive dependence of the trap concentration on composition.",

keywords = "ACIGS, ACIS, CIGS, CIS, deep level optical spectroscopy, defects, DLOS, traps",

author = "Michael Miller and Alexandra Bothwell and Nicholas Valdes and Stefan Paetel and Rouin Farshchi and Ana Kanevce and William Shafarman and Darius Kuciauskas and Aaron Arehart",

note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 49th IEEE Photovoltaics Specialists Conference, PVSC 2022 ; Conference date: 05-06-2022 Through 10-06-2022",

year = "2022",

doi = "10.1109/PVSC48317.2022.9938776",

language = "American English",

pages = "1315--1318",

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Miller, M, Bothwell, A, Valdes, N, Paetel, S, Farshchi, R, Kanevce, A, Shafarman, W, Kuciauskas, D & Arehart, A 2022, 'Bandgap Dependence of Near-Conduction Band State in (AgyCu1-y)(InXGa1-x)Se2 Solar Cells', Paper presented at 49th IEEE Photovoltaics Specialists Conference, PVSC 2022, Philadelphia, United States, 5/06/22 - 10/06/22 pp. 1315-1318. https://doi.org/10.1109/PVSC48317.2022.9938776, https://doi.org/10.1109/PVSC48317.2022.9938776

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T1 - Bandgap Dependence of Near-Conduction Band State in (AgyCu1-y)(InXGa1-x)Se2 Solar Cells

AU - Miller, Michael

AU - Bothwell, Alexandra

AU - Valdes, Nicholas

AU - Paetel, Stefan

AU - Farshchi, Rouin

AU - Kanevce, Ana

AU - Shafarman, William

AU - Kuciauskas, Darius

AU - Arehart, Aaron

PY - 2022

Y1 - 2022

N2 - (Ag, CU) ( mathbf{In}, mathbf{Ga}) mathbf{Se}-{ boldsymbol{2}}-based solar cells have achieved high collection efficiencies, but defects still limit efficiencies well below the theoretical limit. The near-conduction band defect, typically observed at mathbf{E}-{ mathbf{V}} boldsymbol{+0.98} eV, has been ubiquitous across ( mathbf{Ag}, mathbf{Cu}) ( mathbf{In}, mathbf{Ga}) mathbf{Se}-{ boldsymbol{2}} samples from multiple vendors. The current work explores a wider range of composition and demonstrates the trap energy varies relative to the valence band but is approximately constant relative to the conduction band (Ec-0.13 eV). There is also no definitive dependence of the trap concentration on composition.

AB - (Ag, CU) ( mathbf{In}, mathbf{Ga}) mathbf{Se}-{ boldsymbol{2}}-based solar cells have achieved high collection efficiencies, but defects still limit efficiencies well below the theoretical limit. The near-conduction band defect, typically observed at mathbf{E}-{ mathbf{V}} boldsymbol{+0.98} eV, has been ubiquitous across ( mathbf{Ag}, mathbf{Cu}) ( mathbf{In}, mathbf{Ga}) mathbf{Se}-{ boldsymbol{2}} samples from multiple vendors. The current work explores a wider range of composition and demonstrates the trap energy varies relative to the valence band but is approximately constant relative to the conduction band (Ec-0.13 eV). There is also no definitive dependence of the trap concentration on composition.

KW - ACIGS

KW - ACIS

KW - CIGS

KW - CIS

KW - deep level optical spectroscopy

KW - defects

KW - DLOS

KW - traps

UR - https://www.scopus.com/pages/publications/85142852462

U2 - 10.1109/PVSC48317.2022.9938776

DO - 10.1109/PVSC48317.2022.9938776

M3 - Paper

AN - SCOPUS:85142852462

SP - 1315

EP - 1318

T2 - 49th IEEE Photovoltaics Specialists Conference, PVSC 2022

Y2 - 5 June 2022 through 10 June 2022

ER -

Bandgap Dependence of Near-Conduction Band State in (AgyCu1-y)(InXGa1-x)Se2 Solar Cells

Abstract

Conference

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Keywords

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