Efficient Light Emission from Hexagonal SiGe

E.M.T. Fadaly, Alain Dijkstra, J.R. Suckert, D. Ziss, M.A.J. van Tilburg, Y. Ren, C. Mao, V.T. van Lange, S. Kölling, M.A. Verheijen, D. Busse, C. Rödl, J. Furthmüller, F. Bechstedt, J. Stangl, J.J. Finley, Silvana Botti, J.E.M. Haverkort, E.P.A.M. Bakkers

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Abstract

Silicon and Germanium have an indirect band gap, which limits their use in optoelectronic devices Here, we show that we can create a direct band gap in Si1-xGexalloys by changing the crystal structure from cubic to hexagonal. DFT calculations predict a strong optical transition for 0.65>x>1. Hex-Si1-xGexalloys have been fabricated and efficient light emission has been observed.

Original languageEnglish
Title of host publication2021 Silicon Nanoelectronics Workshop
PublisherInstitute of Electrical and Electronics Engineers
Number of pages2
ISBN (Electronic)978-4-86348-781-9
DOIs
Publication statusPublished - 2021
Event26th Silicon Nanoelectronics Workshop, SNW 2021 - Virtual, Online, Japan
Duration: 13 Jun 202113 Jun 2021
Conference number: 26

Conference

Conference26th Silicon Nanoelectronics Workshop, SNW 2021
Abbreviated titleSNW 2021
Country/TerritoryJapan
CityVirtual, Online
Period13/06/2113/06/21

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