Cross-sectional transport imaging in a multijunction solar cell

N. M. Haegel; Chi Wen Ke; Hesham Taha; Harvey Guthrey; C. M. Fetzer; Richard King

doi:10.1109/PVSC.2015.7356200

Cross-sectional transport imaging in a multijunction solar cell

N. M. Haegel, Chi Wen Ke, Hesham Taha, Harvey Guthrey, C. M. Fetzer, Richard King

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

Combining highly localized electron-beam excitation at a point with the spatial resolution capability of optical near-field imaging, we have imaged carrier transport in a cross-sectioned multijunction (GaInP/GaInAs/Ge) solar cell. We image energy transport associated with carrier diffusion throughout the full width of the middle (GaInAs) cell and luminescent coupling from point excitation in the top cell GaInP to the middle cell. Supporting cathodoluminescence and near-field photoluminescence measurements demonstrate excitation-dependent Fermi level splitting effects that influence cross-sectioned spectroscopy results as well as transport limitations on the spatial resolution of cross-sectional measurements.

Original language	English (US)
Title of host publication	2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)	9781479979448
DOIs	https://doi.org/10.1109/PVSC.2015.7356200
State	Published - Dec 14 2015
Externally published	Yes
Event	42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States Duration: Jun 14 2015 → Jun 19 2015

Other

Other	42nd IEEE Photovoltaic Specialist Conference, PVSC 2015
Country/Territory	United States
City	New Orleans
Period	6/14/15 → 6/19/15

Keywords

cathodoluminescence
diffusion
luminescent coupling
multijunction solar cell
transport imaging

ASJC Scopus subject areas

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

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10.1109/PVSC.2015.7356200

Cite this

Haegel, NM, Ke, CW, Taha, H, Guthrey, H, Fetzer, CM & King, R 2015, Cross-sectional transport imaging in a multijunction solar cell. in 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015., 7356200, Institute of Electrical and Electronics Engineers Inc., 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015, New Orleans, United States, 6/14/15. https://doi.org/10.1109/PVSC.2015.7356200

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title = "Cross-sectional transport imaging in a multijunction solar cell",

abstract = "Combining highly localized electron-beam excitation at a point with the spatial resolution capability of optical near-field imaging, we have imaged carrier transport in a cross-sectioned multijunction (GaInP/GaInAs/Ge) solar cell. We image energy transport associated with carrier diffusion throughout the full width of the middle (GaInAs) cell and luminescent coupling from point excitation in the top cell GaInP to the middle cell. Supporting cathodoluminescence and near-field photoluminescence measurements demonstrate excitation-dependent Fermi level splitting effects that influence cross-sectioned spectroscopy results as well as transport limitations on the spatial resolution of cross-sectional measurements.",

keywords = "cathodoluminescence, diffusion, luminescent coupling, multijunction solar cell, transport imaging",

author = "Haegel, {N. M.} and Ke, {Chi Wen} and Hesham Taha and Harvey Guthrey and Fetzer, {C. M.} and Richard King",

year = "2015",

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doi = "10.1109/PVSC.2015.7356200",

language = "English (US)",

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T1 - Cross-sectional transport imaging in a multijunction solar cell

AU - Haegel, N. M.

AU - Ke, Chi Wen

AU - Taha, Hesham

AU - Guthrey, Harvey

AU - Fetzer, C. M.

AU - King, Richard

PY - 2015/12/14

Y1 - 2015/12/14

N2 - Combining highly localized electron-beam excitation at a point with the spatial resolution capability of optical near-field imaging, we have imaged carrier transport in a cross-sectioned multijunction (GaInP/GaInAs/Ge) solar cell. We image energy transport associated with carrier diffusion throughout the full width of the middle (GaInAs) cell and luminescent coupling from point excitation in the top cell GaInP to the middle cell. Supporting cathodoluminescence and near-field photoluminescence measurements demonstrate excitation-dependent Fermi level splitting effects that influence cross-sectioned spectroscopy results as well as transport limitations on the spatial resolution of cross-sectional measurements.

AB - Combining highly localized electron-beam excitation at a point with the spatial resolution capability of optical near-field imaging, we have imaged carrier transport in a cross-sectioned multijunction (GaInP/GaInAs/Ge) solar cell. We image energy transport associated with carrier diffusion throughout the full width of the middle (GaInAs) cell and luminescent coupling from point excitation in the top cell GaInP to the middle cell. Supporting cathodoluminescence and near-field photoluminescence measurements demonstrate excitation-dependent Fermi level splitting effects that influence cross-sectioned spectroscopy results as well as transport limitations on the spatial resolution of cross-sectional measurements.

KW - cathodoluminescence

KW - diffusion

KW - luminescent coupling

KW - multijunction solar cell

KW - transport imaging

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U2 - 10.1109/PVSC.2015.7356200

DO - 10.1109/PVSC.2015.7356200

M3 - Conference contribution

AN - SCOPUS:84961584134

SN - 9781479979448

BT - 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015

Y2 - 14 June 2015 through 19 June 2015

ER -

Cross-sectional transport imaging in a multijunction solar cell

Abstract

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Keywords

ASJC Scopus subject areas

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