Bulk heterojunction organic photovoltaic cell fabricated with a p-type conjugated star-shaped molecule

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

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A new multibranched crystalline molecule was synthesized through Horner-Emmons reactions using hexyl-substituted thiophene-based carbaldehydes as dendrons and benzene-1,2,4,5-tetramethylphosphonic acid octaethyl ester as the core unit. The molecule was employed to fabricate organic photovoltaic (OPV) cells with methanofullerene [6,6]-phenyl C61-butyric acid methyl ester (PCBM). Poly(3-hexylthiophene) (P3HT) was also used as a dopant to improve the film quality and power conversion efficiency. As a result, the short-circuit current density and open circuit voltage were increased when P3HT was added into 4(HPBT) and PCBM dyad, resulting in a higher power conversion efficiency of around 0.6%.

Original languageEnglish
Pages (from-to)866-867
Number of pages2
JournalChemistry Letters
Volume37
Issue number8
DOIs
Publication statusPublished - 2008 Aug 5

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Photovoltaic cells
Conversion efficiency
Stars
Heterojunctions
Esters
Dendrimers
Thiophenes
Molecules
Butyric Acid
Open circuit voltage
Benzene
Short circuit currents
Current density
Doping (additives)
Crystalline materials
Acids
poly(3-hexylthiophene)
(6,6)-phenyl C61-butyric acid methyl ester

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Bulk heterojunction organic photovoltaic cell fabricated with a p-type conjugated star-shaped molecule. / Lee, Tae Wan; Kim, Dae Cheol; Kang, Nam Su; Yu, Jae Woong; Cho, Min Ju; Kim, Kyung Hwan; Choi, Dong Hoon.

In: Chemistry Letters, Vol. 37, No. 8, 05.08.2008, p. 866-867.

Research output: Contribution to journalArticle

Lee, Tae Wan ; Kim, Dae Cheol ; Kang, Nam Su ; Yu, Jae Woong ; Cho, Min Ju ; Kim, Kyung Hwan ; Choi, Dong Hoon. / Bulk heterojunction organic photovoltaic cell fabricated with a p-type conjugated star-shaped molecule. In: Chemistry Letters. 2008 ; Vol. 37, No. 8. pp. 866-867.
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AU - Cho, Min Ju

AU - Kim, Kyung Hwan

AU - Choi, Dong Hoon

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