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- Title
In situ contactless thermal characterisation and imaging of encapsulated photovoltaic devices using phosphor thermometry.
- Authors
Cao, Yameng; Koutsourakis, George; Sutton, Gavin J. M.; Kneller, James W. E.; Wood, Sebastian; Blakesley, James C.; Castro, Fernando A.
- Abstract
Accurate temperature measurements of a photovoltaic (PV) device are not always straightforward. Compromises between accuracy and spatial resolution often have to be made to give either quantitative single point measurements or qualitative spatial measurements. Phosphor thermometry is demonstrated in this work to measure the temperature of an encapsulated silicon photovoltaic device with uncertainty less than 1 °C. Comparisons with contact thermocouple probes are made under external white‐light illumination and internal resistive heating. Under similar conditions, phosphor thermal imaging shows less sensitivity to sources of uncertainty such as poor probe positioning and reduced thermal contact, allowing the detection of faults and shunt induced thermal hot spots in encapsulated PV devices with a higher degree of confidence.
- Subjects
INFRARED imaging; THERMAL imaging cameras; TEMPERATURE measurements; PHOSPHORS; THERMOMETRY
- Publication
Progress in Photovoltaics, 2019, Vol 27, Issue 8, p673
- ISSN
1062-7995
- Publication type
Article
- DOI
10.1002/pip.3142