Influence and mitigation of interference by LID and LETID in damp heat and thermal cycling tests on PV modules

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • E. Fokuhl - , Fraunhofer-Institut für Solare Energiesysteme (Autor:in)
  • G. Mülhöfer - , Fraunhofer-Institut für Solare Energiesysteme (Autor:in)
  • V. Wesselak - , Hochschule Nordhausen (Autor:in)
  • T. Mikolajick - , Professur für Nanoelektronik, Technische Universität Dresden (Autor:in)
  • D. Philipp - , Fraunhofer-Institut für Solare Energiesysteme (Autor:in)
  • P. Gebhardt - , Fraunhofer-Institut für Solare Energiesysteme (Autor:in)

Abstract

Accelerated aging tests as defined in testing standards such as IEC 61215 are important to assure the quality and safety of photovoltaic (PV) modules. The test conditions often contain high temperatures and sometimes carrier injection, which can cause light induced degradation (LID) effects, such as boron-oxygen LID (BO LID) or light and elevated temperature induced degradation (LETID). These effects can interfere with the interpretation of results or produce false fails or passes in certification tests. To address the most severe cases, an option for a regeneration procedure for BO LID after damp heat was recently included in IEC 61215:2021. However, positive performance deviations due to BO LID, as well as the general influence of LETID, are still not excluded. Variations of damp heat and thermal cycling tests on mini-modules built from the monocrystalline passivated emitter and rear cells (PERC) are performed and combined with latest approaches for BO LID regeneration, BO degradation, and LETID temporary recovery. The results show that LETID can superimpose procedures applied for BO LID regeneration but can be easily temporary recovered by one additional step. A combined stabilization procedure, which can exclude influences from both BO LID and LETID on accelerated aging test results, is proposed.

Details

OriginalspracheEnglisch
Aufsatznummer063501
Seitenumfang10
FachzeitschriftJournal of Renewable and Sustainable Energy
Jahrgang14
Ausgabenummer6
PublikationsstatusVeröffentlicht - 1 Nov. 2022
Peer-Review-StatusJa

Externe IDs

WOS 000885698200001
ORCID /0000-0003-3814-0378/work/142256252

Schlagworte

Fächergruppen, Lehr- und Forschungsbereiche, Fachgebiete nach Destatis

Ziele für nachhaltige Entwicklung

Schlagwörter

  • Silicon solar-cells, Carrier-induced degradation, Light-induced degradation, Elevated-temperature, Kinetics, Stabilization, Illumination, Regeneration, Stability, Gallium

Bibliotheksschlagworte