Synthesis and characterization of an anthracene-based low band gap polymer for photovoltaic devices

In Hwan Jung, Hoyeon Kim, Wonho Lee, Byung Jun Jung, Han Young Woo, Seunghyup Yoo, Hong Ku Shim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have synthesized an anthracene-based conjugated polymer, poly[(9,10-bis(oct-1-ynyl) anthracene)-alt-(5,6-bis(octyloxy)-4,7-bis(thiophen- 2-yl)benzo-[c][1,2,5]-thiadiazole)] (PANTBT), for application in organic photovoltaic devices. It exhibited a number average molecular weight of 14,300 g/mol and was fairly soluble in ch lilorinated organic solven ts due to flexible octynyl- and octy-loxy side chains on the P a nthracene and benzoth iadiazole moieties. P ANTBT showed absorption covering 300-660 nm. Through the bond alternation betwee ifn the electron-sufficient anthracene (and thiophene) and electron-deficient benzothiadiazole units, a band gap of PANTBT was decreased to 1.89 eV, showing a deep HOMO level of -5.31 eV. As a result, PANTBT exhibited promising photovoltaic properties with a PCE value of 1.90% (Voc = 0.77 V, Jsc = -6.50 mA/cm2, FF = 0.38) upon blending with PC71BM under AM 1.5G.

Original languageEnglish
Pages (from-to)6422-6426
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume14
Issue number8
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

Fingerprint

Anthracene
anthracene
Polymers
Energy gap
Equipment and Supplies
polymers
synthesis
Electrons
Thiadiazoles
Thiophenes
Conjugated polymers
alternations
Thiophene
thiophenes
molecular weight
coverings
electrons
Molecular Weight
Molecular weight

Keywords

  • Anthracene
  • Benzothiadiazole
  • Conjugated polymers
  • Photovoltaics

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Synthesis and characterization of an anthracene-based low band gap polymer for photovoltaic devices. / Jung, In Hwan; Kim, Hoyeon; Lee, Wonho; Jung, Byung Jun; Woo, Han Young; Yoo, Seunghyup; Shim, Hong Ku.

In: Journal of Nanoscience and Nanotechnology, Vol. 14, No. 8, 01.01.2014, p. 6422-6426.

Research output: Contribution to journalArticle

Jung, In Hwan ; Kim, Hoyeon ; Lee, Wonho ; Jung, Byung Jun ; Woo, Han Young ; Yoo, Seunghyup ; Shim, Hong Ku. / Synthesis and characterization of an anthracene-based low band gap polymer for photovoltaic devices. In: Journal of Nanoscience and Nanotechnology. 2014 ; Vol. 14, No. 8. pp. 6422-6426.
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AB - We have synthesized an anthracene-based conjugated polymer, poly[(9,10-bis(oct-1-ynyl) anthracene)-alt-(5,6-bis(octyloxy)-4,7-bis(thiophen- 2-yl)benzo-[c][1,2,5]-thiadiazole)] (PANTBT), for application in organic photovoltaic devices. It exhibited a number average molecular weight of 14,300 g/mol and was fairly soluble in ch lilorinated organic solven ts due to flexible octynyl- and octy-loxy side chains on the P a nthracene and benzoth iadiazole moieties. P ANTBT showed absorption covering 300-660 nm. Through the bond alternation betwee ifn the electron-sufficient anthracene (and thiophene) and electron-deficient benzothiadiazole units, a band gap of PANTBT was decreased to 1.89 eV, showing a deep HOMO level of -5.31 eV. As a result, PANTBT exhibited promising photovoltaic properties with a PCE value of 1.90% (Voc = 0.77 V, Jsc = -6.50 mA/cm2, FF = 0.38) upon blending with PC71BM under AM 1.5G.

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