Non-Equilibrium Alloying Controls Optoelectronic Properties in Cu2O Thin Films for Photovoltaic Absorber Applications

A. Zakutayev; V. Stevanovic; S. Lany

doi:10.1063/1.4914974

Non-Equilibrium Alloying Controls Optoelectronic Properties in Cu2O Thin Films for Photovoltaic Absorber Applications

A. Zakutayev, V. Stevanovic, S. Lany

Materials Science

Research output: Contribution to journal › Article › peer-review

25 Scopus Citations

Abstract

Cuprous oxide (Cu₂O) has recently received much attention as a candidate material for oxide photovoltaics. However, its low absorption coefficient due to the symmetry forbidden band gap and low intrinsic p-type doping level are obstacles for further advancing the performance of Cu₂O thin film solar cells. Following computational predictions on the band gap, doping, and optical properties, we report combinatorial synthesis and characterization of Cu_2-2xZn_xO_1-ySe_y thin film alloys and the associated device modeling results. We show that the absorption and the conductivity can be independently controlled by Se and Zn content, thereby devising a possible route to design of more efficient oxide photovoltaics and tandem solar cells.

Original language	American English
Article number	123903
Number of pages	4
Journal	Applied Physics Letters
Volume	106
Issue number	12
DOIs	https://doi.org/10.1063/1.4914974 https://doi.org/10.1063/1.4914974
State	Published - 23 Mar 2015

Bibliographical note

Publisher Copyright:
© 2015 AIP Publishing LLC.

NREL Publication Number

NREL/JA-5K00-63776

Keywords

density functional theory (df)
device simulations
sputtering

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title = "Non-Equilibrium Alloying Controls Optoelectronic Properties in Cu2O Thin Films for Photovoltaic Absorber Applications",

abstract = "Cuprous oxide (Cu2O) has recently received much attention as a candidate material for oxide photovoltaics. However, its low absorption coefficient due to the symmetry forbidden band gap and low intrinsic p-type doping level are obstacles for further advancing the performance of Cu2O thin film solar cells. Following computational predictions on the band gap, doping, and optical properties, we report combinatorial synthesis and characterization of Cu2-2xZnxO1-ySey thin film alloys and the associated device modeling results. We show that the absorption and the conductivity can be independently controlled by Se and Zn content, thereby devising a possible route to design of more efficient oxide photovoltaics and tandem solar cells.",

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AU - Stevanovic, V.

AU - Lany, S.

PY - 2015/3/23

Y1 - 2015/3/23

N2 - Cuprous oxide (Cu2O) has recently received much attention as a candidate material for oxide photovoltaics. However, its low absorption coefficient due to the symmetry forbidden band gap and low intrinsic p-type doping level are obstacles for further advancing the performance of Cu2O thin film solar cells. Following computational predictions on the band gap, doping, and optical properties, we report combinatorial synthesis and characterization of Cu2-2xZnxO1-ySey thin film alloys and the associated device modeling results. We show that the absorption and the conductivity can be independently controlled by Se and Zn content, thereby devising a possible route to design of more efficient oxide photovoltaics and tandem solar cells.

AB - Cuprous oxide (Cu2O) has recently received much attention as a candidate material for oxide photovoltaics. However, its low absorption coefficient due to the symmetry forbidden band gap and low intrinsic p-type doping level are obstacles for further advancing the performance of Cu2O thin film solar cells. Following computational predictions on the band gap, doping, and optical properties, we report combinatorial synthesis and characterization of Cu2-2xZnxO1-ySey thin film alloys and the associated device modeling results. We show that the absorption and the conductivity can be independently controlled by Se and Zn content, thereby devising a possible route to design of more efficient oxide photovoltaics and tandem solar cells.

KW - density functional theory (df)

KW - device simulations

KW - sputtering

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M3 - Article

AN - SCOPUS:84925708436

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VL - 106

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

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ER -

Non-Equilibrium Alloying Controls Optoelectronic Properties in Cu2O Thin Films for Photovoltaic Absorber Applications

Abstract

Bibliographical note

NREL Publication Number

Keywords

UN SDGs

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