Time-Resolved Recombination Analysis in Kesterite Polycrystalline Thin Films and Photovoltaic Devices with One-Photon and Two-Photon Excitation

Darius Kuciauskas; Ingrid Repins; Patricia Dippo; Ana Kanevce; Carolyn 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, Patricia Dippo, Ana Kanevce, Carolyn Beall

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

11 Scopus Citations

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	American 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 https://doi.org/10.1016/j.solmat.2014.12.038
State	Published - 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V.

NREL Publication Number

NREL/JA-5J00-60689

Keywords

Kesterites
Minority carrier lifetime
Photoluminescence
Time-resolved photoluminescence

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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.",

keywords = "Kesterites, Minority carrier lifetime, Photoluminescence, Time-resolved photoluminescence",

author = "Darius Kuciauskas and Ingrid Repins and Patricia Dippo and Ana Kanevce and Carolyn Beall",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

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

language = "American English",

volume = "136",

pages = "100--105",

journal = "Solar Energy Materials and Solar Cells",

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TY - JOUR

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 - Dippo, Patricia

AU - Kanevce, Ana

AU - Beall, Carolyn

PY - 2015

Y1 - 2015

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.

KW - Kesterites

KW - Minority carrier lifetime

KW - Photoluminescence

KW - Time-resolved photoluminescence

UR - http://www.scopus.com/inward/record.url?scp=84921634885&partnerID=8YFLogxK

U2 - 10.1016/j.solmat.2014.12.038

DO - 10.1016/j.solmat.2014.12.038

M3 - Article

AN - SCOPUS:84921634885

SN - 0927-0248

VL - 136

SP - 100

EP - 105

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

Bibliographical note

NREL Publication Number

Keywords

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