Tricyanofuran-based donoracceptor type chromophores for bulk heterojunction organic solar cells

Min Ju Cho, Jangwon Seo, Heong Sub Oh, Hongsub Jee, Won Jin Kim, Kyung Hwan Kim, Mai Ha Hoang, Dong Hoon Choi, Paras N. Prasad

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Tricyanofuran-based small molecules were synthesized through Knoevenagel reaction with formyl heteroaromatic donating moieties and 2-cyanomethylene-3- cyano-4,5,5-trimethyl-2,5-dihydrofuran (TCF) as a strong acceptor. UVvis absorption demonstrated that the combination of TCF with donating units resulted in an enhanced intra-molecular charge transfer (ICT) transition, which led to long wavelength absorption in the chromophores. The absorption coefficients and the molecular energy levels of the chromophores can be tuned effectively by employing different donating groups. The chromophores were used in conjunction with [6,6]-phenyl C61 butyric acid methyl ester (PC 61BM) or [6,6]-phenyl-C71-butyric acid methyl ester (PC 71BM) to fabricate organic heterojunction photovoltaic cells. This solution-processed bulk heterojunction (BHJ) solar cells exhibited a power conversion efficiency (PCE) of 2.44%, a short-circuit current density (J SC) of 8.74 mA/cm 2, and an open-circuit voltage (V OC) of 0.93 V under simulated air mass 1.5 global irradiation (100 mW/cm 2).

Original languageEnglish
Pages (from-to)71-77
Number of pages7
JournalSolar Energy Materials and Solar Cells
Volume98
DOIs
Publication statusPublished - 2012 Mar 1

Fingerprint

Chromophores
Heterojunctions
Butyric acid
Esters
Butyric Acid
Photovoltaic cells
Open circuit voltage
Short circuit currents
Electron energy levels
Conversion efficiency
Charge transfer
Solar cells
Current density
Irradiation
Wavelength
Molecules
Air
Organic solar cells
tricyanofuran

Keywords

  • Bulk heterojunction
  • Chromophore
  • Organic solar cells
  • PCBM
  • Solution process

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films

Cite this

Tricyanofuran-based donoracceptor type chromophores for bulk heterojunction organic solar cells. / Cho, Min Ju; Seo, Jangwon; Oh, Heong Sub; Jee, Hongsub; Kim, Won Jin; Kim, Kyung Hwan; Hoang, Mai Ha; Choi, Dong Hoon; Prasad, Paras N.

In: Solar Energy Materials and Solar Cells, Vol. 98, 01.03.2012, p. 71-77.

Research output: Contribution to journalArticle

Cho, Min Ju ; Seo, Jangwon ; Oh, Heong Sub ; Jee, Hongsub ; Kim, Won Jin ; Kim, Kyung Hwan ; Hoang, Mai Ha ; Choi, Dong Hoon ; Prasad, Paras N. / Tricyanofuran-based donoracceptor type chromophores for bulk heterojunction organic solar cells. In: Solar Energy Materials and Solar Cells. 2012 ; Vol. 98. pp. 71-77.
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