This title appears in the Scientific Report :
2003
Please use the identifier:
http://hdl.handle.net/2128/1970 in citations.
Please use the identifier: http://dx.doi.org/10.1063/1.1559636 in citations.
Optoelectronic properties of thick SiGe layers grown as small mesas by low pressure chemical vapor deposition
Optoelectronic properties of thick SiGe layers grown as small mesas by low pressure chemical vapor deposition
Arrays of Si0.80Ge0.20/Si(001) square mesas were epitaxially grown by low pressure chemical vapor deposition to optimize the light emission in the near infrared range. To study the influence of mesa size on light emission the current-voltage characteristics, the spectral photocurrent, and the electr...
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Personal Name(s): | Stoica, T. |
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Vescan, L. | |
Contributing Institute: |
Institut für Halbleiterschichten und Bauelemente; ISG-1 |
Published in: | Journal of applied physics, 93 (2003) S. 4461 |
Imprint: |
Melville, NY
American Institute of Physics
2003
|
Physical Description: |
4461 |
DOI: |
10.1063/1.1559636 |
Document Type: |
Journal Article |
Research Program: |
Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik |
Series Title: |
Journal of Applied Physics
93 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1063/1.1559636 in citations.
Arrays of Si0.80Ge0.20/Si(001) square mesas were epitaxially grown by low pressure chemical vapor deposition to optimize the light emission in the near infrared range. To study the influence of mesa size on light emission the current-voltage characteristics, the spectral photocurrent, and the electroluminescence of p-i-n structures were measured. While the plastic relaxation has a strong influence on the electroluminescence spectra, the current-voltage characteristics are only slightly changed. At low temperatures, a tunneling current was observed and its possible location is discussed. Due to the high SiGe thickness, both the contributions of the no-phonon and transversal optical phonon-assisted transitions to the photocurrent spectra could be observed. Direct evidence of the higher band gap of relaxed SiGe was obtained from electroluminescence studies. (C) 2003 American Institute of Physics. |