Macromolecular Research

, Volume 20, Issue 2, pp 128–137

Syntheses of organic dyes based on phenothiazine as photosensitizers and effects of their π-conjugated bridges on the photovoltaic performances of dye-sensitized solar cells

  • Ki-Hyun Kim
  • Seung-Min Lee
  • Min-Hye Seo
  • Sang-Eun Cho
  • Won-Pill Hwang
  • Sung-Hae Park
  • Young-Keun Kim
  • Jin-Kook Lee
  • Mi-Ra Kim
Articles

DOI: 10.1007/s13233-012-0017-2

Cite this article as:
Kim, KH., Lee, SM., Seo, MH. et al. Macromol. Res. (2012) 20: 128. doi:10.1007/s13233-012-0017-2

Abstract

Three organic dyes, 2-cyano-3-(N-hexylphenothiazine-3-yl)acrylic acid (H-PTZ), 2-cyano-3-(5′-(2-(Nhexylphenothiazine-3-yl)vinyl)-2,2′-bithiophen-5-yl)acrylic acid (H-PTZ-BT), and 2-cyano-3-(5-(4-((4-(2-(N-hexylphenothiazine-3-yl)vinyl)phenyl)(phenyl)amino)phenyl)thiophen-2-yl)acrylic acid (H-PTZ-TPA-T), based on the phenothiazine (PTZ) unit as an electron donor moiety and cyanoacrylic acid unit as an electron acceptor moiety were synthesized to study the effect of a π-conjugated bridge of the dye on the performance of the resulting dye-sensitized solar cells devices. The thiophene unit and triphenylamine were introduced as a π-conjugated bridge. The H-PTZTPA-T-sensitized cell showed the highest overall conversion efficiency of 4.01% (Jsc: 9.64 mA·cm−2; Voc: 0.69 V; FF: 0.60), while the H-PTZ-sensitized cell showed the lowest value of 3.57% (Jsc: 7.76 mA·cm−2; Voc: 0.70 V; FF: 0.65) among the cells based on the three organic dyes compared to 5.09% for the cell based on the N719 dye (Jsc: 12.77 mA·cm−2; Voc: 0.72 V; FF: 0.55) under AM 1.5 illumination (100 mW·cm−2).
https://static-content.springer.com/image/art%3A10.1007%2Fs13233-012-0017-2/MediaObjects/13233_2012_17_Fig1_HTML.gif

Keywords

dyesphotovoltaic effectphenothiazinesensitizersdye-sensitized solar cells

Copyright information

© The Polymer Society of Korea and Springer Netherlands 2012

Authors and Affiliations

  • Ki-Hyun Kim
    • 1
  • Seung-Min Lee
    • 1
  • Min-Hye Seo
    • 1
  • Sang-Eun Cho
    • 1
  • Won-Pill Hwang
    • 1
  • Sung-Hae Park
    • 1
  • Young-Keun Kim
    • 1
  • Jin-Kook Lee
    • 1
  • Mi-Ra Kim
    • 1
  1. 1.Department of Polymer Science & EngineeringPusan National UniversityBusanKorea