Investigation of damage caused by partial shading of CuInxGa(1-x)Se2 photovoltaic modules with bypass diodes

Ji Eun Lee, Soohyun Bae, Wonwook Oh, Hyomin Park, Soo Min Kim, Dongho Lee, Junggyu Nam, Chan Bin Mo, Dongseop Kim, Jung Yup Yang, Yoon Mook Kang, Haeseok Lee, Donghwan Kim

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

This study evaluated the impact of partial shading on CuInxGa(1-x)Se2 (CIGS) photovoltaic (PV) modules equipped with bypass diodes. When the CIGS PV modules were partially shaded, they were subjected to partial reverse bias, leading to the formation of hotspots and a possible occurrence of junction damage. In a module with a cadmium sulfide buffer layer, hotspots and wormlike defects were formed. The hotspots were formed as soon as the modules were shaded; the hotspots caused permanent damage (wormlike defects) in the CIGS module. Specifically, the wormlike defects were caused by the window layer, leading to increased recombination and decay of the solar cell properties. However, a CIGS module with a zinc sulfide buffer layer did not exhibit the formation of hotspots or any visual damage. The reverse bias breakdown voltage of the CIGS PV module with the cadmium sulfide buffer layer was higher than that of the CIGS PV module with the zinc sulfide buffer layer.

Original languageEnglish
JournalProgress in Photovoltaics: Research and Applications
DOIs
Publication statusAccepted/In press - 2016

Fingerprint

bypasses
Buffer layers
Diodes
modules
diodes
damage
Zinc sulfide
Cadmium sulfide
Defects
buffers
zinc sulfides
cadmium sulfides
Electric breakdown
Solar cells
defects
electrical faults
solar cells
occurrences
zinc sulfide
cadmium sulfide

Keywords

  • Bypass diode
  • Cu(In,Ga)Se module
  • Hotspot
  • Partial shading
  • Reliability
  • Wormlike defect

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Investigation of damage caused by partial shading of CuInxGa(1-x)Se2 photovoltaic modules with bypass diodes. / Lee, Ji Eun; Bae, Soohyun; Oh, Wonwook; Park, Hyomin; Kim, Soo Min; Lee, Dongho; Nam, Junggyu; Mo, Chan Bin; Kim, Dongseop; Yang, Jung Yup; Kang, Yoon Mook; Lee, Haeseok; Kim, Donghwan.

In: Progress in Photovoltaics: Research and Applications, 2016.

Research output: Contribution to journalArticle

Lee, Ji Eun ; Bae, Soohyun ; Oh, Wonwook ; Park, Hyomin ; Kim, Soo Min ; Lee, Dongho ; Nam, Junggyu ; Mo, Chan Bin ; Kim, Dongseop ; Yang, Jung Yup ; Kang, Yoon Mook ; Lee, Haeseok ; Kim, Donghwan. / Investigation of damage caused by partial shading of CuInxGa(1-x)Se2 photovoltaic modules with bypass diodes. In: Progress in Photovoltaics: Research and Applications. 2016.
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AU - Mo, Chan Bin

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AU - Kim, Donghwan

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