Novel epitaxial silicon interlayer for junction engineering in aggressively-scaled germanium photodetectors

A new technique which uses an ultra-thin silicon interlayer in germanium photodetectors for junction engineering is demonstrated. A 5 nm epitaxially grown silicon layer was effective in preventing phosphorus diffusion into bulk Ge at 625 °C. Abrupt junction profile was achieved in thin 250 nm Ge PDs...

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Main Authors: Andy Eu-Jin Lim, Tsung-Yang Liow, Kok Kiong Chen, Roger Poh Cher Tern, Guo-Qiang Lo
Format: Article
Language:English
Published: AIP Publishing LLC 2013-09-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4821118
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author Andy Eu-Jin Lim
Tsung-Yang Liow
Kok Kiong Chen
Roger Poh Cher Tern
Guo-Qiang Lo
author_facet Andy Eu-Jin Lim
Tsung-Yang Liow
Kok Kiong Chen
Roger Poh Cher Tern
Guo-Qiang Lo
author_sort Andy Eu-Jin Lim
collection DOAJ
description A new technique which uses an ultra-thin silicon interlayer in germanium photodetectors for junction engineering is demonstrated. A 5 nm epitaxially grown silicon layer was effective in preventing phosphorus diffusion into bulk Ge at 625 °C. Abrupt junction profile was achieved in thin 250 nm Ge PDs which led to improved bandwidth performance during low voltage operations (at 1V or less).
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spelling doaj.art-a9dd55820d974c469e27ce3c697bacd42022-12-22T03:35:01ZengAIP Publishing LLCAIP Advances2158-32262013-09-0139092106092106-510.1063/1.4821118008309ADVNovel epitaxial silicon interlayer for junction engineering in aggressively-scaled germanium photodetectorsAndy Eu-Jin Lim0Tsung-Yang Liow1Kok Kiong Chen2Roger Poh Cher Tern3Guo-Qiang Lo4Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 11 Science Park Road, Singapore Science Park II, Singapore 117685, SingaporeInstitute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 11 Science Park Road, Singapore Science Park II, Singapore 117685, SingaporeInstitute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 11 Science Park Road, Singapore Science Park II, Singapore 117685, SingaporeInstitute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 11 Science Park Road, Singapore Science Park II, Singapore 117685, SingaporeInstitute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 11 Science Park Road, Singapore Science Park II, Singapore 117685, SingaporeA new technique which uses an ultra-thin silicon interlayer in germanium photodetectors for junction engineering is demonstrated. A 5 nm epitaxially grown silicon layer was effective in preventing phosphorus diffusion into bulk Ge at 625 °C. Abrupt junction profile was achieved in thin 250 nm Ge PDs which led to improved bandwidth performance during low voltage operations (at 1V or less).http://dx.doi.org/10.1063/1.4821118
spellingShingle Andy Eu-Jin Lim
Tsung-Yang Liow
Kok Kiong Chen
Roger Poh Cher Tern
Guo-Qiang Lo
Novel epitaxial silicon interlayer for junction engineering in aggressively-scaled germanium photodetectors
AIP Advances
title Novel epitaxial silicon interlayer for junction engineering in aggressively-scaled germanium photodetectors
title_full Novel epitaxial silicon interlayer for junction engineering in aggressively-scaled germanium photodetectors
title_fullStr Novel epitaxial silicon interlayer for junction engineering in aggressively-scaled germanium photodetectors
title_full_unstemmed Novel epitaxial silicon interlayer for junction engineering in aggressively-scaled germanium photodetectors
title_short Novel epitaxial silicon interlayer for junction engineering in aggressively-scaled germanium photodetectors
title_sort novel epitaxial silicon interlayer for junction engineering in aggressively scaled germanium photodetectors
url http://dx.doi.org/10.1063/1.4821118
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