Universal statistics of parasitic shunt formation in solar cells, and its implications for cell to module efficiency gap

Sourabh Dongaonkar, Stephen Loser, Erik J. Sheets, Katherine Zaunbrecher, Rakesh Agrawal, Tobin J Marks, Muhammad A. Alam

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Parasitic shunt formation is an important cause of variability and module efficiency loss in all photovoltaic technologies. In this letter, we quantify the nature of this shunt variability in four major thin film photovoltaic (TFPV) technologies, namely, amorphous silicon (a-Si:H), organic (OPV), Cu(In,Ga)SSe (CIGS), and CdTe. We analyze a wide variety of datasets to show that the shunt current exhibits a robust universal log-normal behavior for all these technologies. We affirm this conclusion by rigorous statistical analysis of the available data. We use equivalent circuit simulations to quantitatively illustrate the importance of this heavy-tailed distribution towards determining the universal gap between cell and module efficiency.

Original languageEnglish
Pages (from-to)782-787
Number of pages6
JournalEnergy and Environmental Science
Volume6
Issue number3
DOIs
Publication statusPublished - Mar 2013

Fingerprint

Solar cells
Statistics
Circuit simulation
Amorphous silicon
Equivalent circuits
silicon
Statistical methods
statistical analysis
Thin films
simulation
statistics
solar cell
loss
distribution

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Environmental Chemistry
  • Pollution
  • Nuclear Energy and Engineering

Cite this

Universal statistics of parasitic shunt formation in solar cells, and its implications for cell to module efficiency gap. / Dongaonkar, Sourabh; Loser, Stephen; Sheets, Erik J.; Zaunbrecher, Katherine; Agrawal, Rakesh; Marks, Tobin J; Alam, Muhammad A.

In: Energy and Environmental Science, Vol. 6, No. 3, 03.2013, p. 782-787.

Research output: Contribution to journalArticle

Dongaonkar, Sourabh ; Loser, Stephen ; Sheets, Erik J. ; Zaunbrecher, Katherine ; Agrawal, Rakesh ; Marks, Tobin J ; Alam, Muhammad A. / Universal statistics of parasitic shunt formation in solar cells, and its implications for cell to module efficiency gap. In: Energy and Environmental Science. 2013 ; Vol. 6, No. 3. pp. 782-787.
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