Fields of activities P. Gottwald [Gottwald Péter]

 

Teaching Lectures and connecting laboratory exercises

- Technical University of Budapest - (1968-1991).

Electron-tubes and vacuum electron devices.
Vacuum-technique.
Semiconductor devices.
Semiconductor technology.
Microwave semiconductor devices.

Supervising of several gradual and postgradual theses.

- FH Darmstadt - Faculty of Electrical Engeneering - (1991-1993).

Electrical linear networks.
Microvawe and optoelectronic devices.

Research Electrical Engineering - Technology and Materials Science

Sponsored by

CDG - Carl Duisberg Gesellschaft - Deutschland.
FES - Fridrich Ebert Stiftung - Deutschland.
DAAD - Deutscher Akademischer Austauschdienst - Deutschland.
DAAD - Konrad Zuse-Program - Deutschland.

German TELEKOM FTZ - Darmstadt.
TUNGSRAM Company - Hungary.
MTA - Hungarian Academy of Sciences.
OMFB - National Commitee for Technical Development - Hungary.

EU Project - Copernicus. (No.: CP94/01180).
OTKA - National Scientific Research Foundation (No.'s: 622, 773, T37706.)

 

1989 ® ® ...
Low-frequency electronic fluctuation phenomena in semiconductor material systems:

Bulk and surface origin of the Low-Frequency Noise (LFN) in GaAs.
Surface effects on the LFN of thin InP layers.

Free surface - systematically treated with special contaminations.

Surface-passivating process effects on GaAs devices.
Surface-passivating process effects on InP devices.

Process optimization by means of LFN Measurements.

LFN in MBE grown InGaAs layers capped by an undoped InAlAs layer.

LFN in porous Si

1975-1989
Microwave semiconductor devices



Theory and technology of GaAs MeSFET's.
Ohmic contacts, shortening the channel by optical lithography.

Ohmic- and Schottky contacts to InAlAs/InGaAs HFET's.
Theory, optimization and reliability.

Optical control of microwave semiconductor devices.
MeSFET, POS


 

Books:

Mikrohullámú félvezető eszközök. Műszaki Könyvkiadó Budapest, 1985. (Microwave Semiconductor Devices - Textbook in Hungarian)
ISBN: 936 10 586 1

Mikrohullámú kézikönyv (Edited by Dr. Almássy György)
Műszaki Könyvkiadó Budapest, 1972.
6. Fejezet: Gottwald-Romhányi - Mikrohullámú aktív eszközök
(Microwave handbook - in Hungarian: Chapter 6.: Microwave Active
 Devices)




1966-1975
Development of electronic measurement equipments for semiconductor devices:


High-frequency measurement equipments for varicap & varactor diodes.

Computer controlled sorting equipment for C-V matched varicap diodes.

Five-channel ultra-fast puls generator for versatil use of driving of CCD devices.

Doping profile plotter for thin epitaxial semiconductor layers.