Light-emitting diodes fabricated from biomolecular compounds

H. Tajima, K. Shimatani, Takeshi Komino, S. Ikeda, M. Matsuda, Y. Ando, H. Akiyama

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)


    We fabricated ITO/biomolecule/Al junctions using chrolophyll a, cytochrome c, myoglobin, hemin, Vitamin B12. All the junctions worked as organic light-emitting diode (OLED). The quantum efficiencies of the fabricated OLED were of the order of 1 × 10-7 around V = 10 V, and did not seriously depend on whether or not a compound exhibits photoluminescence. Based on the energy diagram of the ITO/cytochrome c/Al junction, we discuss the difference of the EL spectrum from the photoluminescence or absorption spectrum.

    Original languageEnglish
    Pages (from-to)61-65
    Number of pages5
    JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
    Publication statusPublished - Aug 15 2006

    All Science Journal Classification (ASJC) codes

    • Surfaces and Interfaces
    • Physical and Theoretical Chemistry
    • Colloid and Surface Chemistry

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