Origin of radiation-induced degradation in polymer solar cells

Ankit Kumar, Roderick Devine, Clay Mayberry, Bao Lei, Gang Li, Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

76 Citations (Scopus)


Polymer solar cells have been shown to degrade under X-rays. Here, in situ polymer photovoltaic performance and recombination lifetimes are measured and it is found that charge accumulation is the primary reason for degradation of solar cells. This is affected by the mixing ratio of donor and acceptor in the bulk heterojunction. Both a quantitative understanding and the physical model of the degradation mechanism are presented. Understanding of the degradation mechanism is extended in polymer donor-acceptor bulk heteroj unction systems to propose a material combination for making radiation hard diodes that can find important application in fields ranging from memory arrays to organic X-ray detectors for medical imaging. KGaA, Weinheirn.
Original languageEnglish
Pages (from-to)2729-2736
Number of pages8
JournalAdvanced Functional Materials
Issue number16
Publication statusPublished - 23 Aug 2010
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Condensed Matter Physics
  • Electrochemistry


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