This title appears in the Scientific Report :
2006
Please use the identifier:
http://hdl.handle.net/2128/2028 in citations.
Please use the identifier: http://dx.doi.org/10.1109/LPT.2006.871696 in citations.
Ultrafast and Highly Sensitive Photodetectors With Recessed Electrodes Fabricated on Low-Temperature-Grown GaAs
Ultrafast and Highly Sensitive Photodetectors With Recessed Electrodes Fabricated on Low-Temperature-Grown GaAs
We have fabricated and characterized ultrafast metal-semiconductor-metal (MSM) photodetectors with recessed electrodes, based on low-temperature-grown GaAs. The new recessed-electrode MSM geometry led to an improved electric-field distribution inside the photodetector structure and resulted in a 25%...
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Personal Name(s): | Mikulics, M. |
---|---|
Wu, S. / Marso, M. / Adam, R. / Förster, A. / van der Hart, A. / Kordos, P. / Lüth, H. / Sobolewski, R. | |
Contributing Institute: |
Institut für Halbleiterschichten und Bauelemente; ISG-1 Center of Nanoelectronic Systems for Information Technology; CNI |
Published in: | IEEE photonics technology letters, 18 (2006) S. 820 - 822 |
Imprint: |
New York, NY
IEEE
2006
|
Physical Description: |
820 - 822 |
DOI: |
10.1109/LPT.2006.871696 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
IEEE Photonics Technology Letters
18 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1109/LPT.2006.871696 in citations.
We have fabricated and characterized ultrafast metal-semiconductor-metal (MSM) photodetectors with recessed electrodes, based on low-temperature-grown GaAs. The new recessed-electrode MSM geometry led to an improved electric-field distribution inside the photodetector structure and resulted in a 25% breakdown voltage and sensitivity increase with simultaneous four-fold reduction of capacitance, as compared to the identical MSM devices with planar electrodes. Time-resolved studies performed using 100-fs-duration laser pulses showed that recessed-electrode MSMs exhibited 1.0-ps-wide photoresponse transients with no slow after-pulse tails and their photoresponse time was 0.9 ps. The improved transient photoresponse parameters are the main advantages of the recessed-electrode geometry. |