Photoluminescence-Based Current-Voltage Characterisation of Individual Subcells in Multi-Junction Devices
File(s)
Published version
Author(s)
Alonso Alvarez, D
Lackner, D
Philipps, SP
Bett, AW
Ekins-Daukes, NJ
Type
Conference Paper
Abstract
We demonstrate a photoluminescence based, contactless method to determine the current-voltage characteristics of the individual subcells in a multi-junction solar cell. The method, furthers known results for single junction devices and relies upon the reciprocity relation between the absorption and emission properties on a solar cell. Laser light with a suitable energy is used to excite carriers selectively in one junction and the internal voltages are deduced from the intensity of the resulting luminescence. The IV curves obtained this way on 1J, 2J and 6J devices are compared to those obtained using electroluminescence. Good agreement is obtained at high injection conditions while discrepancies at low injection are attributed to in-plane carrier transport.
Date Issued
2015-09-14
Date Acceptance
2015-09-14
Citation
31st European Photovoltaic Solar Energy Conference and Exhibition, 2015, pp.1509-1513
ISBN
3936338396
Publisher
European Photovoltaic Solar Energy Conference and Exhibition
Start Page
1509
End Page
1513
Journal / Book Title
31st European Photovoltaic Solar Energy Conference and Exhibition
Copyright Statement
© The Author(s) 2015.
Sponsor
EURAMET ERMP-MSU
Grant Number
ENG51-REG3
Source
31st European Photovoltaic Solar Energy Conference and Exhibition
Publication Status
Published
Start Date
2015-09-14
Finish Date
2015-09-18
Coverage Spatial
Hamburg