Photovoltaic devices fabricated with a p-type conjugated multi-branched molecules

Dae Cheol Kim, Nam Su Kang, Jae Woong Yu, Min Ju Cho, Kyung Hwan Kim, Dong Hoon Choi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

New multi-branched crystalline molecules were synthesized through Horner(Emmons reactions using hexyl-substituted thiophene-based carbaldehydes as dendrons and [1,2,4,5-tetra-(diethoxy-phosphorylmethyl)-benzyl]-phosphonic acid diethyl ester as the core unit. 1,2,4,5-Tetrakis((E)-2-(5′-hexyl-2,2′-bithiophen-5-yl)vinyl)benzene (HPBT) and 1,2,4,5-tetrakis((E)-2-(5′-dodecyl-2,2′-bithiophen-5-yl)vinyl)benzene (DPBT) have different alkylene peripheral moities such as the hexyl and dodecyl group. The molecules were employed to fabricate organic photovoltaic (OPV) cells with methanofullerene [6,6]-phenyl C61-butyric acid methyl ester (PCBM). As a result, HPBT-based bulk heterojunction with PCBM exhibited higher short-circuit current density and open circuit voltage, resulting in a higher power conversion efficiency of around 0.944%.

Original languageEnglish
Pages (from-to)396-400
Number of pages5
JournalSynthetic Metals
Volume159
Issue number5-6
DOIs
Publication statusPublished - 2009 Mar 1

Fingerprint

Benzene
esters
Esters
Butyric acid
butyric acid
Dendrimers
Thiophenes
Molecules
Butyric Acid
Photovoltaic cells
Open circuit voltage
benzene
Short circuit currents
Conversion efficiency
Heterojunctions
molecules
Current density
photovoltaic cells
Thiophene
short circuit currents

Keywords

  • Bulk heterojunction
  • Multi-branched molecule
  • PCBM
  • Photovoltaic
  • Solar cell

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Photovoltaic devices fabricated with a p-type conjugated multi-branched molecules. / Kim, Dae Cheol; Kang, Nam Su; Yu, Jae Woong; Cho, Min Ju; Kim, Kyung Hwan; Choi, Dong Hoon.

In: Synthetic Metals, Vol. 159, No. 5-6, 01.03.2009, p. 396-400.

Research output: Contribution to journalArticle

Kim, Dae Cheol ; Kang, Nam Su ; Yu, Jae Woong ; Cho, Min Ju ; Kim, Kyung Hwan ; Choi, Dong Hoon. / Photovoltaic devices fabricated with a p-type conjugated multi-branched molecules. In: Synthetic Metals. 2009 ; Vol. 159, No. 5-6. pp. 396-400.
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