Enhanced efficiency of polymer solar cells by adding a high-mobility conjugated polymer

Shenghua Liu, Peng You, Jinhua Li, Jun Li, Chun Sing Lee, Beng S. Ong, Charles Surya, Feng Yan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

217 Citations (Scopus)


The performance of organic solar cells is substantially enhanced by introducing high-mobility conjugate polymers as additives for the first time. The most pronounced effect is observed in one type of device with the average power conversion efficiencies increased from 8.75% to 10.08% after the addition of a high-mobility polymer for only 0.5 weight percent in the active layers, which is mainly attributed to the increased hole mobility and carrier lifetime in the devices. Besides the hole mobility, the energy band structure of the additive is also found to be critical to the enhancement of the device performance. This work demonstrates a novel approach for improving the efficiencies of organic solar cells.
Original languageEnglish
Pages (from-to)1463-1470
Number of pages8
JournalEnergy and Environmental Science
Issue number5
Publication statusPublished - 1 Jan 2015

ASJC Scopus subject areas

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


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