Efficient silicon light-emitting diodes

Martin A. Green (), Jianhua Zhao, Aihua Wang, Peter J. Reece and Michael Gal
Additional contact information
Martin A. Green: University of New South Wales
Jianhua Zhao: University of New South Wales
Aihua Wang: University of New South Wales
Peter J. Reece: University of New South Wales
Michael Gal: University of New South Wales

Nature, 2001, vol. 412, issue 6849, 805-808

Abstract: Abstract Considerable effort is being expended on the development of efficient silicon light-emitting devices compatible with silicon-based integrated circuit technology1. Although several approaches are being explored1,2,3,4,5,6, all presently suffer from low emission efficiencies, with values in the 0.01–0.1% range regarded as high2. Here we report a large increase in silicon light-emitting diode power conversion efficiency to values above 1% near room temperature—close to the values of representative direct bandgap emitters of a little more than a decade ago7,8. Our devices are based on normally weak one- and two-phonon assisted sub-bandgap light-emission processes. Their design takes advantage of the reciprocity between light absorption and emission by maximizing absorption at relevant sub-bandgap wavelengths while reducing the scope for parasitic non-radiative recombination within the diode. Each feature individually is shown to improve the emission efficiency by a factor of ten, which accounts for the improvement by a factor of one hundred on the efficiency of baseline devices.

Date: 2001
References: Add references at CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/35090539 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:412:y:2001:i:6849:d:10.1038_35090539

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/35090539

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().