@inproceedings{fbaa060ad76b4560ab8993459aa4e742,
title = "Comparison of environmental degradation in Hanwha 295 W and SunPower 320 W photovoltaic modules via accelerated lifecycle testing",
abstract = "Lifecycle testing of full-scale photovoltaic (PV) modules was conducted in a large-sized, accelerated-degradation chamber in our labs that enables full-solar-spectrum irradiance, temperature, and humidity control. In-situ measurement of both polycrystalline and monocrystalline silicon PV module energy conversion characteristics were examined under environmental lifecycle conditions representative of Tucson, AZ. Specifically, the performance degradation of a Hanwha 295 W polycrystalline PV module and of a SunPower 320 W monocrystalline PV module were evaluated and compared. Results indicate that the initial efficiency of the polycrystalline module and the subsequent annual degradation occurred within expected ranges for that system. In contrast, the single-crystal module exhibited both a significant decrease in PV module efficiency during the test cycle, and early evidence of environmentally-induced materials degradation across the module. The temperature and time-dependence of PV module behavior were extracted to provide insight into early-stage performance degradation under conditions approximating field-relevant environments.",
keywords = "Degradation, accelerated lifecycle testing",
author = "R. Biggie and T. Lai and Huang, {W. J.} and Potter, {B. G.} and K. Simmons-Potter",
note = "Publisher Copyright: {\textcopyright} 2014 SPIE.; Reliability of Photovoltaic Cells, Modules, Components, and Systems VII ; Conference date: 20-08-2014 Through 21-08-2014",
year = "2014",
doi = "10.1117/12.2062205",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Rebecca Jones-Albertus and Dhere, {Neelkanth G.} and Wohlgemuth, {John H.}",
booktitle = "Reliability of Photovoltaic Cells, Modules, Components, and Systems VII",
}