Abstract
Module performance can be characterized by imaging using baseline and periodic images to track defects and degradation. Both thermal images, which can be acquired during sunny operating conditions, and photoluminescence images, which could be acquired at night, can be collected without electrical connection. Electroluminescence (EL) images, which are useful to detect many types of defects such as cracks, interconnect and solder faults, and resistances, have typically required electrical connection to drive current in the cells and modules. Here, a contactless EL imaging technique is proposed, which provides an EL image without the need for electrical connection to drive current through the module. Such EL imaging has the capability to be collected at night without disruption to daytime power generation.
Original language | American English |
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Number of pages | 6 |
DOIs | |
State | Published - 2015 |
Event | 2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC) - New Orleans, Louisiana Duration: 14 Jun 2015 → 19 Jun 2015 |
Conference
Conference | 2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC) |
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City | New Orleans, Louisiana |
Period | 14/06/15 → 19/06/15 |
NREL Publication Number
- NREL/CP-5J00-63621
Keywords
- electroluminescence
- imaging
- photovoltaic cells
- photovoltaic systems
- reliability
- silicon
- solar energy
- solar power generation