Measurement setup for differential spectral responsivity of solar cells

Petri Kärhä; Hans Baumgartner; Janne Askola; Kasperi Kylmänen; Benjamin Oksanen; Kinza Maham; Vo Huynh; Erkki Ikonen

doi:10.1007/s10043-020-00584-x

Measurement setup for differential spectral responsivity of solar cells

Petri Kärhä^*
, Hans Baumgartner
, Janne Askola
, Kasperi Kylmänen
, Benjamin Oksanen
, Kinza Maham
, Vo Huynh
, Erkki Ikonen

^*Corresponding author for this work

Aalto University

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

15 Citations (Scopus)

Abstract

We have developed a setup for measuring differential spectral responsivities of unifacial and bifacial solar cells under bias light conditions. The setup uses 30 high-brightness LEDs for generating a quasi-monochromatic light source covering the wavelength range 290–1300 nm. Halogen lamps are used to generate bias-lighting conditions up to the irradiance level of 1000 W/m². The setup has been fully characterized for spectral irradiances and spatial uniformities of all light sources. Validation measurements carried out using a reference cell of 2 × 2 cm² area from Fraunhofer ISE demonstrated an agreement better than 2% over the wavelength range of 425–940 nm, with an expanded uncertainty of 2.6%. In the UV and IR regions, the discrepancies are higher but still within estimated uncertainties. The setup is also tested in measuring spectral responsivities of large 15 × 15 cm² bifacial solar cells. The associated problems are discussed.

Original language	English
Pages (from-to)	195-204
Journal	Optical Review
Volume	27
Issue number	2
DOIs	https://doi.org/10.1007/s10043-020-00584-x
Publication status	Published - 1 Apr 2020
MoE publication type	A1 Journal article-refereed
Event	13th Japan-Finland Joint Symposium on Optics in Engineering, OIE 2019 - Tallinn, Estonia Duration: 26 Aug 2019 → 30 Aug 2019

Funding

Open access funding provided by Aalto University. This work has received funding from project 16ENG02 PV-Enerate of the EMPIR programme co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Bifacial
Efficacy
Electricity
Radiometry
Solar cell
Spectral responsivity

Access to Document

10.1007/s10043-020-00584-x

Cite this

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title = "Measurement setup for differential spectral responsivity of solar cells",

abstract = "We have developed a setup for measuring differential spectral responsivities of unifacial and bifacial solar cells under bias light conditions. The setup uses 30 high-brightness LEDs for generating a quasi-monochromatic light source covering the wavelength range 290–1300 nm. Halogen lamps are used to generate bias-lighting conditions up to the irradiance level of 1000 W/m2. The setup has been fully characterized for spectral irradiances and spatial uniformities of all light sources. Validation measurements carried out using a reference cell of 2 × 2 cm2 area from Fraunhofer ISE demonstrated an agreement better than 2\% over the wavelength range of 425–940 nm, with an expanded uncertainty of 2.6\%. In the UV and IR regions, the discrepancies are higher but still within estimated uncertainties. The setup is also tested in measuring spectral responsivities of large 15 × 15 cm2 bifacial solar cells. The associated problems are discussed.",

keywords = "Bifacial, Efficacy, Electricity, Radiometry, Solar cell, Spectral responsivity",

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note = "Publisher Copyright: {\textcopyright} 2020, The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 13th Japan-Finland Joint Symposium on Optics in Engineering, OIE 2019, OIE 2019 ; Conference date: 26-08-2019 Through 30-08-2019",

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doi = "10.1007/s10043-020-00584-x",

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AU - Kärhä, Petri

AU - Baumgartner, Hans

AU - Askola, Janne

AU - Kylmänen, Kasperi

AU - Oksanen, Benjamin

AU - Maham, Kinza

AU - Huynh, Vo

AU - Ikonen, Erkki

PY - 2020/4/1

Y1 - 2020/4/1

N2 - We have developed a setup for measuring differential spectral responsivities of unifacial and bifacial solar cells under bias light conditions. The setup uses 30 high-brightness LEDs for generating a quasi-monochromatic light source covering the wavelength range 290–1300 nm. Halogen lamps are used to generate bias-lighting conditions up to the irradiance level of 1000 W/m2. The setup has been fully characterized for spectral irradiances and spatial uniformities of all light sources. Validation measurements carried out using a reference cell of 2 × 2 cm2 area from Fraunhofer ISE demonstrated an agreement better than 2% over the wavelength range of 425–940 nm, with an expanded uncertainty of 2.6%. In the UV and IR regions, the discrepancies are higher but still within estimated uncertainties. The setup is also tested in measuring spectral responsivities of large 15 × 15 cm2 bifacial solar cells. The associated problems are discussed.

AB - We have developed a setup for measuring differential spectral responsivities of unifacial and bifacial solar cells under bias light conditions. The setup uses 30 high-brightness LEDs for generating a quasi-monochromatic light source covering the wavelength range 290–1300 nm. Halogen lamps are used to generate bias-lighting conditions up to the irradiance level of 1000 W/m2. The setup has been fully characterized for spectral irradiances and spatial uniformities of all light sources. Validation measurements carried out using a reference cell of 2 × 2 cm2 area from Fraunhofer ISE demonstrated an agreement better than 2% over the wavelength range of 425–940 nm, with an expanded uncertainty of 2.6%. In the UV and IR regions, the discrepancies are higher but still within estimated uncertainties. The setup is also tested in measuring spectral responsivities of large 15 × 15 cm2 bifacial solar cells. The associated problems are discussed.

KW - Bifacial

KW - Efficacy

KW - Electricity

KW - Radiometry

KW - Solar cell

KW - Spectral responsivity

UR - https://www.scopus.com/pages/publications/85079377707

U2 - 10.1007/s10043-020-00584-x

DO - 10.1007/s10043-020-00584-x

M3 - Article

AN - SCOPUS:85079377707

SN - 1340-6000

VL - 27

SP - 195

EP - 204

JO - Optical Review

JF - Optical Review

IS - 2

T2 - 13th Japan-Finland Joint Symposium on Optics in Engineering, OIE 2019

Y2 - 26 August 2019 through 30 August 2019

ER -

Measurement setup for differential spectral responsivity of solar cells

Abstract

Funding

UN SDGs

Keywords

Access to Document

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