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Title:
 
LED Floodlight for Spectral Tuning of a Class AAA Large Area Pulsed Solar Simulator
 
Author(s):
 
M. Pravettoni, L. Manni, S. Dittmann
 
Keywords:
 
a-Si, Multijunction Solar Cell, Performance, Characterisation, Characterization, Experimental Methods
 
Topic:
 
OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Subtopic: PV Modules
Event: 31st European Photovoltaic Solar Energy Conference and Exhibition
Session: 5AV.6.3
 
Pages:
 
1946 - 1951
ISBN: 3-936338-39-6
Paper DOI: 10.4229/EUPVSEC20152015-5AV.6.3
 
Price:
 
 
0,00 EUR
 
Document(s): paper
 

Abstract/Summary:


Spectral tuning of solar simulators is a well-known procedure, used in the experimental practice for years with multi-junction cells for concentrating photovoltaics (CPV) and space photovoltaic (PV) applications. Multi-junction structures are also used in second generation thin-film PV modules (for example in a-Si:H compounds). A dedicated international standard procedure (IEC 60904-1.1) is in view of publication, describing the “how-to” for current-voltage characterization of multi-junction PV cells and modules: thereafter spectral tuning will need to become soon a widely diffuse practice in research, research-and-development and development-andproduction sites. With this in mind, the authors present here the upgrade of a Class AAA large area pulsed solar simulator to allow spectral tuning by means of a set of high power LEDs. They revise the spectral tuning procedure and show results on commercial modules. They give indications to quantify the new uncertainty contributions arising from the non-uniformity of spectral irradiance and from the spectral mismatch, which affects not only the shortcircuit current (which is the same as in single-junction devices), but also the fill factor and the open-circuit voltage in multi-junction devices.