Efficient semitransparent organic solar cells with good color perception and good color rendering by blade coating

Ying Qian Wong, Hsin Fei Meng, Hin Yong Wong, Ching Seong Tan, Chen Yu Wu, Pei Ting Tsai, Chih Yu Chang, Sheng Fu Horng, Hsiao Wen Zan

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

This paper proposes high efficiency semitransparent organic solar cells (OSCs) with good color perception and good color rendering using blade coating technique. We investigate four different polymer blends and first fabricate small area devices with active area of 0.04 cm2, followed by large area devices with active area of 10.8 cm2. Two of the polymer blends, 2,6-Bis(trimethyltin)-4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene:6,6-phenyl C71-butyric acid methyl ester (PBDTTT-CT:PC71BM) and poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b;4,5-b'] dithiophene-2,6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4-b]thiophene-)-2-carboxylate-2-6-diyl)]:PC71BM (PBDTTT-EFT:PC71BM) show promising results. For small area devices, semitransparent PBDTTT-CT:PC71BM and semitransparent PBDTTT-EFT:PC71BM achieve a power conversion efficiency (PCE) of 5.2% (opaque PCE = 7.5%) and 5.6% (opaque PCE = 9.4%) respectively. For large area devices, they are found to produce a PCE of 3.8% (opaque PCE = 4.2%) and 5.3% (opaque PCE = 5.9%) respectively. Based on the CIE 1931 chromaticity diagram, semitransparent PBDTTT-CT:PC71BM and semitransparent PBDTTT-EFT:PC71BM are located very close to the standard illuminant D65, indicating good color perception. As for color rendering, they demonstrate high color rendering index (CRI) of 95.4 and 87.1 respectively. These combined high performances indicate high-quality transmitted light, which is suitable for window application.

Original languageEnglish
Pages (from-to)196-206
Number of pages11
JournalOrganic Electronics: physics, materials, applications
Volume43
DOIs
Publication statusPublished - Apr 1 2017
Externally publishedYes

Keywords

  • Blade coating
  • Large area
  • Organic solar cell
  • Semitransparent
  • Window application

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

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  • Cite this

    Wong, Y. Q., Meng, H. F., Wong, H. Y., Tan, C. S., Wu, C. Y., Tsai, P. T., Chang, C. Y., Horng, S. F., & Zan, H. W. (2017). Efficient semitransparent organic solar cells with good color perception and good color rendering by blade coating. Organic Electronics: physics, materials, applications, 43, 196-206. https://doi.org/10.1016/j.orgel.2017.01.003