Dibenzo[f,h]thieno[3,4-b] quinoxalinefullerene heterojunction bilayer solar cells with complementary spectrum coverage

Dhananjaya Kekuda, Jen Shien Huang, Marappan Velusamy, Jiann T. Lin, Chih Wei Chu

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In the present article, potential of a bilayer organic solar cell has been investigated. We utilize newly synthesized small molecules, namely dibenzo[f,h]thieno[3,4-b]quinoxaline as electron donors for solar cells in heterojunction bilayer configuration. These small molecules with a narrow absorption band in the range 400450 nm provide a complementary spectrum for the fullerene C70, thereby leading to an overall power conversion efficiency of 2.6±0.2% under 100 mW/cm2 incident radiation. Thermal annealing seems to impact the charge separation at the donoracceptor interface, which eventually affects device performance. This work demonstrates that carefully optimized bilayer devices are comparable to the bulk heterojunction counterparts.

Original languageEnglish
Pages (from-to)1767-1771
Number of pages5
JournalSolar Energy Materials and Solar Cells
Volume94
Issue number10
DOIs
Publication statusPublished - 01-10-2010

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Heterojunctions
Solar cells
Quinoxalines
Molecules
Fullerenes
Conversion efficiency
Absorption spectra
Annealing
Radiation
Electrons
Hot Temperature
fullerene C70
Organic solar cells

All Science Journal Classification (ASJC) codes

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

Cite this

Kekuda, Dhananjaya ; Huang, Jen Shien ; Velusamy, Marappan ; Lin, Jiann T. ; Chu, Chih Wei. / Dibenzo[f,h]thieno[3,4-b] quinoxalinefullerene heterojunction bilayer solar cells with complementary spectrum coverage. In: Solar Energy Materials and Solar Cells. 2010 ; Vol. 94, No. 10. pp. 1767-1771.
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Dibenzo[f,h]thieno[3,4-b] quinoxalinefullerene heterojunction bilayer solar cells with complementary spectrum coverage. / Kekuda, Dhananjaya; Huang, Jen Shien; Velusamy, Marappan; Lin, Jiann T.; Chu, Chih Wei.

In: Solar Energy Materials and Solar Cells, Vol. 94, No. 10, 01.10.2010, p. 1767-1771.

Research output: Contribution to journalArticle

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