The effect of moisture on the degradation mechanism of multi-crystalline silicon photovoltaic module

T. H. Kim, N. C. Park, Donghwan Kim

Research output: Contribution to journalArticle

17 Citations (Scopus)


Moisture can diffuse into a photovoltaic (PV) module through its breathable back-sheet and its ethylene vinyl acetate (EVA) sheet. Therefore moisture-induced degradation mechanism is investigated with multi-crystalline (m-Si) silicon PV module. Three types of accelerated tests (ATs) were conducted to evaluate the effect of temperature and humidity on the degradation of m-Si PV module. The thermal activation energy for degradation, 0.492 eV, was calculated. Electroluminescence image shows that moisture has an effect on the module degradation. Electrical measurements, Dark IV and Suns Voc indicate that series resistance (Rs) contributes to drop in power output. The results of SEM&EDX and Auger Electron Spectroscopy (AES) reveal that corrosion occurred at the region of solder joint and also show that the oxide concentration on the metal electrode increased after the AT.

Original languageEnglish
Pages (from-to)1823-1827
Number of pages5
JournalMicroelectronics Reliability
Issue number9-11
Publication statusPublished - 2013 Sep 1


ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Safety, Risk, Reliability and Quality

Cite this