Title: Assessment of Ageing Through Periodic Exposure to Damp Heat (85 oC/85% RH) of Seven Different Thin-Film Module Types
Authors: SAMPLE TonySKOCZEK ArturFIELD Michael
Citation: 34 IEEE Photovoltaic Specialists Conference, ISBN: 978-1-4244-2950-9, ISSN: 0160-8371 p. 2220-2225
Publisher: IEEE
Publication Year: 2009
JRC N°: JRC50340
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC50340
Type: Articles in periodicals and books
Abstract: In this paper we have investigated the accelerated ageing of seven different thin-film module types through the use of sequential damp heat (85oC/85% RH) tests. The module types [a-Si, tandem a-Si/a-Si micro-morph a-Si/µ-Si, triple junction a-Si, CIS (x2) and CdTe] were selected to cover a range of thin-film devices, materials and construction types. Sequential damp heat tests for cumulative exposure times of 250, 1000, 2000 and 3000h have been achieved to date, with the modules subjected to visual inspection, electrical insulation measurements and electrical performance measurements (IV curves). A wide range of performance losses (Pmax), from almost zero to -70%, were evident for the different technologies. Sequential damp heat exposure tests can be used to induce accelerated aging on thin-film modules. However, it is not possible to equate loss of power to a number of years of outdoor exposure due to the lack of knowledge of the acceleration factors for each PV module type.
JRC Directorate:Energy, Transport and Climate

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