| Description |
1 online resource (16 pages) : color illustrations. |
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text txt rdacontent |
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computer c rdamedia |
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online resource cr rdacarrier |
| Series |
NREL/PR ; 5K00-80365 |
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NREL/PR ; 5K00-80365.
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| Note |
Slideshow presentation. |
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"IEEE PVSC (virtual/Florida); Area 9: Module and System Reliability; Session 5B: Characterization of PV Module and System Reliability (Joint 5.8/9.4); Tuesday, 2021/6/22, 14:15-14:30 (MDT)." |
| Funding |
DE-AC36-08GO28308 |
| Note |
Description based on online resource; title from PDF title page (NREL, viewed September 22, 2021). |
| Summary |
The performance and integrity of photovoltaic (PV) modules and materials may be assessed through optical characterizations. We have developed a custom Optical Mapping Instrument (OMI) to improve measurement throughput time, facilitate automated measurements, and obtain spatial information relative to commercial benchtop spectrophotometer instruments. Both the key components and the methods used to improve the measurements are described. The measurement precision for the OMI is benchmarked for hemispherical transmittance relative to a previous round-robin study for commercial spectrophotometers. Example mapping measurements and their implications are given for specimens from other studies, including: (1) the depletion of the UV absorber is revealed for specimens beyond a certain size after standardized artificial ultraviolet (UV) weathering, (2) an optical degradation by internal haze formation is confirmed following Damp Heat (85°C/85% relative humidity) testing, (3) the better uniformity of the wear pattern for falling sand abrasion is used to select the DIN 52348 fixture over the ASTM D968 fixture, and (4) the local (millimeter-scale) heterogeneity of surface contamination in the soiling-prone location of Dubai relative to Kuwait. The results of the UV study have already been used to improve the standardized weathering of encapsulants. The example for Damp Heat testing is given to increase awareness of a degradation believed to be ubiquitously occurring in safety and design-type qualification testing of PV modules. |
| Subject |
Photovoltaic cells.
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Optical materials -- Stress corrosion.
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Photovoltaic power generation.
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Cellules photovoltaïques.
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Matériaux optiques -- Corrosion sous tension.
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Conversion photovoltaïque.
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photovoltaic cells.
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Photovoltaic cells. (OCoLC)fst01062155
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Photovoltaic power generation. (OCoLC)fst01062167
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| Indexed Term |
DuraMAT |
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IEC TS 62788-7-2 |
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PVQAT |
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reliability |
| Added Author |
National Renewable Energy Laboratory (U.S.), issuing body.
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| Added Title |
Custom high-throughput optical mapping instrument (OMI) for accelerated stress testing of photovoltaic module materials |
| Standard No. |
1804872 OSTI ID |
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0000-0002-4698-5277 |
| Gpo Item No. |
0430-P-09 (online) |
| Sudoc No. |
E 9.22:NREL/PR-5 K 00-80365 |
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