Skip to content

Research at St Andrews

Accurate efficiency measurements of organic light-emitting diodes via angle-resolved spectroscopy

Research output: Contribution to journalArticlepeer-review

Author(s)

Emily Archer, Sabina Hillebrandt, Changmin Keum, Caroline Murawski, Jan Murawski, Francisco Tenopala-Carmona, Malte C. Gather

School/Research organisations

Abstract

The accurate characterization of thin-film LEDs – including organic light emitting diodes (OLEDs), perovskites and quantum dot LEDs – is crucial to our understanding of the factors that influence their efficiency and thus to the fabrication of LEDs with improved performance and stability. In addition, detailed information about the angular characteristics of LED emission is useful to assess the suitability of individual architectures, e.g. for display applications. Here, the implementation of a goniometer-based measurement system and corresponding protocol are described that allow to accurately determine the current-voltage-luminance characteristics, external quantum efficiency and luminous efficacy of OLEDs and other emerging thin-film LEDs. The system allows recording of angle-resolved electroluminescence spectra and accurate efficiency measurements for devices with both Lambertian and non-Lambertian emission characteristics. A detailed description of the setup and a protocol for assembling and aligning the required hardware are provided. Drawings of all custom parts and the open-source Python software required to perform the measurement and to analyze the data are included.
Close

Details

Original languageEnglish
Article number2000838
Number of pages11
JournalAdvanced Optical Materials
Volume9
Issue number1
Early online date8 Nov 2020
DOIs
Publication statusPublished - 4 Jan 2021

    Research areas

  • Angle-resolved electroluminescence, External quantum efficiency, Goniometer, Non-Lambertian emission, OLEDs, Thin-film LEDs

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Identification of the key parameters for horizontal transition dipole orientation in fluorescent and TADF organic light-emitting diodes

    Tenopala-Carmona, F., Lee, O. S., Crovini, E., Neferu, A. M., Murawski, C., Olivier, Y., Zysman-Colman, E. & Gather, M. C., 2 Aug 2021, (E-pub ahead of print) In: Advanced Materials. Early View, 28 p., 2100677.

    Research output: Contribution to journalReview articlepeer-review

  2. Emerging biomedical applications of organic light-emitting diodes

    Murawski, C. & Gather, M. C., 10 Jul 2021, In: Advanced Optical Materials. 9, 14, 22 p., 2100269.

    Research output: Contribution to journalArticlepeer-review

  3. Organic electronics and beyond

    Gather, M. C., Lussem, B., Reineke, S. & Riede, M., 9 Jul 2021, In: Advanced Optical Materials. 9, 14, 2 p., 2101108.

    Research output: Contribution to journalEditorialpeer-review

  4. Real-time imaging of cellular forces using optical interference

    Meek, A. T., Kronenberg, N. M., Morton, A., Liehm, P., Murawski, J., Dalaka, E., Booth, J. H., Powis, S. J. & Gather, M. C., 11 Jun 2021, In: Nature Communications. 12, 11 p., 3552.

    Research output: Contribution to journalArticlepeer-review

  5. Cell force-driven basement membrane disruption fuels EGF- and stiffness-induced invasive cell dissemination from benign breast gland acini

    Gaiko-Shcherbak, A., Eschenbruch, J., Kronenberg, N. M., Teske, M., Wolters, B., Springer, R., Gather, M. C., Merkel, R., Hoffmann, B. & Noetzel, E., 12 Apr 2021, In: International Journal of Molecular Sciences. 22, 8, 19 p., 3962.

    Research output: Contribution to journalArticlepeer-review

Related by journal

  1. Probing vibrational strong coupling of molecules with wavelength-modulated raman spectroscopy

    Menghrajani, K. S., Chen, M., Dholakia, K. & Barnes, W. L., 28 Nov 2021, (E-pub ahead of print) In: Advanced Optical Materials. Early View, 11 p., 2102065.

    Research output: Contribution to journalArticlepeer-review

  2. Substitution effects on a new pyridylbenzimidazole acceptor for thermally activated delayed fluorescence and their use in organic light-emitting diodes

    Hall, D., Rajamalli, P., Duda, E., Madayanad Suresh, S., Rodella, F., Bagnich, S., Carpenter-Warren, C. L., Cordes, D. B., Slawin, A. M. Z., Strohriegl, P., Beljonne, D., Köhler, A., Olivier, Y. & Zysman-Colman, E., 18 Oct 2021, In: Advanced Optical Materials. 9, 20, 13 p., 2100846.

    Research output: Contribution to journalArticlepeer-review

  3. Emerging biomedical applications of organic light-emitting diodes

    Murawski, C. & Gather, M. C., 10 Jul 2021, In: Advanced Optical Materials. 9, 14, 22 p., 2100269.

    Research output: Contribution to journalArticlepeer-review

  4. Organic electronics and beyond

    Gather, M. C., Lussem, B., Reineke, S. & Riede, M., 9 Jul 2021, In: Advanced Optical Materials. 9, 14, 2 p., 2101108.

    Research output: Contribution to journalEditorialpeer-review

  5. Bloch oscillations of hybrid light-matter particles in a waveguide array

    Beierlein, J., Egorov, O. A., Harder, T. H., Gagel, P., Emmerling, M., Schneider, C., Höfling, S., Peschel, U. & Klembt, S., 4 May 2021, (E-pub ahead of print) In: Advanced Optical Materials. Early View

    Research output: Contribution to journalArticlepeer-review

ID: 270820054

Top