Enhancement of the power conversion efficiency in a polymer solar cell using a work-function-controlled TimSinOx interlayer

Soo Ghang Ihn, Younhee Lim, Sungyoung Yun, Insun Park, Jong Hwan Park, Yeonji Chung, Xavier Bulliard, Jaejune Chang, Hyeran Choi, Jong Hyeok Park, Yeong Suk Choi, Gyeong Su Park, Hyuk Chang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Work-function-adjustable TimSinOx provides an opportunity to optimize the energy-level alignment at the photoactive/cathode interface in the polymer bulk heterojunction solar cell. The work function of TimSinOx is engineered by adjusting the Si mol% during the sol-gel reaction. The controlled work function provides an energetically downhill cascade pathway for electrons from the electron acceptor to the cathode, which contributes to improvement in electron collection at the cathode. The valence band maxima of TimSi nOx also become deeper as the Si mol% increases and the hole-blocking ability of TimSinOx is enhanced as a result. Accordingly, polymer solar cells fitted with the optimized Ti mSinOx exhibit enhanced performance.

Original languageEnglish
Pages (from-to)2033-2039
Number of pages7
JournalJournal of Materials Chemistry A
Volume2
Issue number7
DOIs
Publication statusPublished - 2014 Feb 21

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Fingerprint Dive into the research topics of 'Enhancement of the power conversion efficiency in a polymer solar cell using a work-function-controlled Ti<sub>m</sub>Si<sub>n</sub>O<sub>x</sub> interlayer'. Together they form a unique fingerprint.

  • Cite this

    Ihn, S. G., Lim, Y., Yun, S., Park, I., Park, J. H., Chung, Y., Bulliard, X., Chang, J., Choi, H., Park, J. H., Choi, Y. S., Park, G. S., & Chang, H. (2014). Enhancement of the power conversion efficiency in a polymer solar cell using a work-function-controlled TimSinOx interlayer. Journal of Materials Chemistry A, 2(7), 2033-2039. https://doi.org/10.1039/c3ta14863g