Time-resolved recombination analysis in kesterite polycrystalline thin films and photovoltaic devices with one-photon and two-photon excitation

Darius Kuciauskas; Ingrid Repins; Ana Kanevce; Jian V. Li; Pat Dippo; Carolyn L. Beall

doi:10.1016/j.solmat.2014.12.038

Time-resolved recombination analysis in kesterite polycrystalline thin films and photovoltaic devices with one-photon and two-photon excitation

Darius Kuciauskas, Ingrid Repins, Ana Kanevce, Jian V. Li, Pat Dippo, Carolyn L. Beall

Department of Aeronautics and Astronautics

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

12 Citations (Scopus)

Abstract

Minority carrier lifetime, τ_B, is one of the key metrics for polycrystalline solar cell absorbers. Based on different spatial carrier-generation profiles obtained using one-photon and two-photon excitation (1PE and 2PE, respectively), we developed a new approach to determine τ_B in polycrystalline thin films. By comparing time-resolved photoluminescence data measured with 1PE and 2PE, we extract τ_B and surface recombination velocity S, and resolve charge separation at the pn junction. For coevaporated kesterite (Cu₂ZnSnSe₄) absorbers, we find S=(0.8-2.1)×10⁴ cm s^-1 and τ_B=7.0±0.5 ns. For corresponding photovoltaic devices, charge separation occurs in 2 ns.

Original language	English
Pages (from-to)	100-105
Number of pages	6
Journal	Solar Energy Materials and Solar Cells
Volume	136
DOIs	https://doi.org/10.1016/j.solmat.2014.12.038
Publication status	Published - 2015 May

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solmat.2014.12.038

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title = "Time-resolved recombination analysis in kesterite polycrystalline thin films and photovoltaic devices with one-photon and two-photon excitation",

abstract = "Minority carrier lifetime, τB, is one of the key metrics for polycrystalline solar cell absorbers. Based on different spatial carrier-generation profiles obtained using one-photon and two-photon excitation (1PE and 2PE, respectively), we developed a new approach to determine τB in polycrystalline thin films. By comparing time-resolved photoluminescence data measured with 1PE and 2PE, we extract τB and surface recombination velocity S, and resolve charge separation at the pn junction. For coevaporated kesterite (Cu2ZnSnSe4) absorbers, we find S=(0.8-2.1)×104 cm s-1 and τB=7.0±0.5 ns. For corresponding photovoltaic devices, charge separation occurs in 2 ns.",

author = "Darius Kuciauskas and Ingrid Repins and Ana Kanevce and Li, {Jian V.} and Pat Dippo and Beall, {Carolyn L.}",

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year = "2015",

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doi = "10.1016/j.solmat.2014.12.038",

language = "English",

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journal = "Solar Energy Materials and Solar Cells",

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T1 - Time-resolved recombination analysis in kesterite polycrystalline thin films and photovoltaic devices with one-photon and two-photon excitation

AU - Kuciauskas, Darius

AU - Repins, Ingrid

AU - Kanevce, Ana

AU - Li, Jian V.

AU - Dippo, Pat

AU - Beall, Carolyn L.

PY - 2015/5

Y1 - 2015/5

N2 - Minority carrier lifetime, τB, is one of the key metrics for polycrystalline solar cell absorbers. Based on different spatial carrier-generation profiles obtained using one-photon and two-photon excitation (1PE and 2PE, respectively), we developed a new approach to determine τB in polycrystalline thin films. By comparing time-resolved photoluminescence data measured with 1PE and 2PE, we extract τB and surface recombination velocity S, and resolve charge separation at the pn junction. For coevaporated kesterite (Cu2ZnSnSe4) absorbers, we find S=(0.8-2.1)×104 cm s-1 and τB=7.0±0.5 ns. For corresponding photovoltaic devices, charge separation occurs in 2 ns.

AB - Minority carrier lifetime, τB, is one of the key metrics for polycrystalline solar cell absorbers. Based on different spatial carrier-generation profiles obtained using one-photon and two-photon excitation (1PE and 2PE, respectively), we developed a new approach to determine τB in polycrystalline thin films. By comparing time-resolved photoluminescence data measured with 1PE and 2PE, we extract τB and surface recombination velocity S, and resolve charge separation at the pn junction. For coevaporated kesterite (Cu2ZnSnSe4) absorbers, we find S=(0.8-2.1)×104 cm s-1 and τB=7.0±0.5 ns. For corresponding photovoltaic devices, charge separation occurs in 2 ns.

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JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

ER -

Time-resolved recombination analysis in kesterite polycrystalline thin films and photovoltaic devices with one-photon and two-photon excitation

Abstract

All Science Journal Classification (ASJC) codes

UN SDGs

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