Electronic Components, Technology and Materials
Department of Microelectronics

dr. V. Mohammadi

PhD student
Electronic Components, Technology and Materials (ECTM), Department of Microelectronics

PhD thesis (Mar 2015): Low temperature PureB technology for CMOS compatible photodetectors
Promotor: Lina Sarro, Albert Theuwissen

Biography

Vahid Mohammadi was born in Mashhad in 1981. He received his M.Sc. degrees in Electrical and Electronic Engineering from the University of Shiraz, Iran in 2009. During his MSc, he has been fabricated a pressure sensor based on a PZT thin film. In January 2011, he joined the Faculty of Electrical Engineering, Mathematics and Computer Science at Delft University of Technology, The Netherlands where he is currently working toward his Ph.D. degree in the Silicon Device Integration Group of Prof. Lis K. Nanver. His current research is focused on improving the current technology for VUV / low-energy electron (photo)detectors and imagers and to develop a novel PureB-layer deposition especially at lower temperatures (400C-450C) to implant this layer to the low-penetration beams applications such as VUV, EUV, low-energy-electrons detectors and x-ray radiation detector which are capable to integrate into the advanced CMOS processes.

Publications

  1. Low temperature PureB technology for CMOS compatible photodetectors
    Vahid Mohammadi;
    PhD thesis, Delft University of Technology, 2015.
    document

  2. Research Update: Reactively sputtered nanometer-thin ZrN film as a diffusion barrier between Al and boron layers for radiation detector applications
    Golshani, Negin; Mohammadi, V.; Schellevis, H.; Beenakker, C. I. M.; Ishihara, R.;
    APL Materials,
    Volume 2, Issue 10, pp. 100702, 2014.
    document

  3. Robust UV/VUV/EUV PureB Photodiode Detector Technology with High CMOS Compatibility
    L.K. Nanver; L. Qi; V. Mohammadi; K.R.M. Mok; W.B. de Boer; N. Golshani; A. Sammak; T.L.M. Scholtes; A. Gottwald; U. Kroth; F. Scholze;
    Journal of Selected Topics in Quantum Electronics,
    Volume 20, Issue 6, pp. pp.1-11, 2014.

  4. Temperature Dependency of the Kinetics of PureB CVD Deposition over Patterned Si/SiO2 Surfaces
    V. Mohammadi; N. Golshani; K.R.C. Mok; W.B. de Boer; J. Derakhshandeh; L.K. Nanver;
    Microelectronic Engineering,
    Volume 125, pp. 45-50, 2014.

  5. Thickness evaluation of deposited pureb layers in micro-/millimeter-sized windows to Si
    Mohammadi, V; Ramesh, S; Nanver, LK;
    In Proceedings - 2014 IEEE International Conference on Microelectronic Test Structures,
    pp. 194-199, 2014.

  6. Local Loading Effect of The Pure-Boron-Layer Chemical-Vapor Depositions
    V. Mohammadi; W.B. de Boer; T.L.M. Scholtes; L.K. Nanver;
    ECS Transactions,
    Volume 50, Issue 4, pp. 333-341, 2013. DOI 10.1149/05004.0333ecst.

  7. VUV/Low-Energy-Electron Si Photodiodes with Post-Metal 400�C PureB Deposition
    V. Mohammadi; L. Qi; N. Golshani; K. R. C. Mok; W. B. de Boer; A. Sammak; J. J. Derakhshandeh. van der Cingel; L. K. Nanver;
    IEEE Electron Device Letters,
    Volume 34, Issue 12, 2013. DOI 10.1109/LED.2013.2287221.

  8. Effects of Annealing on Chemical-Vapor Deposited PureB Layers
    K. R. C. Mok; A. H. G. Vlooswijk; V. Mohammadi; L. K. Nanver;
    ECS Journal of Solid State Science and Technology,
    Volume 2, Issue 9, pp. 413-417, 2013. DOI 10.1149/2.044309jss.

  9. A Simple Model describing the kinetic of CVD Deposition of Pure-Boron Layers from Diborane
    V. Mohammadi; W.B. de Boer; T.L.M. Scholtes; L.K. Nanver and;
    ECS Transactions,
    Volume 45, Issue 31, pp. 57-65, 2013. DOI 10.1149/04531.0057ecst.

  10. Piezoelectric Pressure Sensor Based on Enhanced Thin-Film PZT Diaphragm Containing Nanocrystalline Powders
    V. Mohammadi;
    In F. Ebrahimi (Ed.), InTech-Piezoelectrisc Materials and Devices - Practice and Applications,
    Feb. 2013. ISBN 978-953-51-1045-3, DOI 10.5772/54755s.
    document

  11. Investigation of the Issues Arising by Lowering the Deposition Temperature of the PureB-layer on Si/SiO2 Surfaces
    V. Mohammadi; N. Golshani; K.R.C. Mok; W.B. de Boer; J. Derakhshandeh; L.K. Nanver and;
    In ICT.OPEN,
    Eindhoven, The Netherlands, Nov. 2013.

  12. High-Ohmic Resistors using Nanometer-Thin Pure-Boron Chemical-Vapour-Deposited Layers
    N. Golshani; V. Mohammadi; S. Ramesh; L.K. Nanver and;
    In ESSDERC 2013,
    2013.

  13. Temperature Dependency of the Kinetics of PureB CVD Deposition over Patterned Si/SiO2 Surfaces
    V. Mohammadi; N.Golshani; K.R.C. Mok; W.B. de Boer; J. Derakhshandeh; L.K. Nanver and;
    In E-MRS 2013 Fall Meeting 2013,
    Warsaw, Poland, Sep 2013.
    document

  14. An Analytical Kinetic Model for Chemical-Vapor Deposition of Pure-Boron Layers from Diborane
    V. Mohammadi; W.B. de Boer; L.K. Nanver and;
    Journal of Applied Physics,
    Volume 112, 2012. DOI 10.1063/1.4767328.

  15. Pattern dependency and loading effect of pure-boron-layer chemical-vapor deposition
    V. Mohammadi; W.B. de Boer; T.L.M. Scholtes; L.K. Nanver;
    ECS Journal of Solid State Science and Technology,
    Volume 1, Issue 1, pp. Q16-Q20, 2012. DOI 10.1149/2.024201jss.

  16. Temperature dependence of chemical-vapor deposition of pure boron layers from diborane
    V. Mohammadi; W.B. de Boer; T.L.M. Scholtes; L.K. Nanver;
    Applied Physics Letters,
    Volume 101, Issue 11, pp. 1-4, 2012. DOI 10.1063/1.4752109.

  17. Impact of the Process and Chamber Parameters on CVD Deposition of PureB layer
    V. Mohammadi; W.B. de Boer; T.L.M. Scholtes; L.K. Nanver;
    In ICT.OPEN: Micro technology and micro devices (SAFE 2012),
    Rotterdam, The Netherlands, Oct. 2012.

  18. Pattern dependency of pure-boron-layer chemical-vapor depositions
    V. Mohammadi; W.B. de Boer; T.L.M. Scholtes; L.K. Nanver;
    In 221st ECS Meeting: ECS Transactions,
    Seattle, Washington, pp. 39-48, May 2012. DOI 10.1149/1.3700937.

  19. Pure dopant deposition of B and Ga for ultrashallow junctions in Si-based devices
    L.K. Nanver; A. Sammak; V. Mohammadi; K.R.C. Mok; L. Qi; A. Sakic; N. Golshani; J. Derakhshandeh; T.M.L. Scholtes; W.D. de Boer;
    In ECS Trans. 2012: 27th Symposium on Microelectronics Technology and Devices (SBMicro2012),
    Brazil, Brasilia, pp. 25-33, Aug. 2012. DOI 10.1149/04901.0025ecst.

  20. Applications of PureB and PureGaB ultrashallow junction technologies
    L.K. Nanver; A. _akic; V. Mohammadi; J. Derakhshandeh; K.R.C. Mok; L. Qi; N. Golshani; T.M.L. Scholtes; W.B. de Boer;
    In 2012 IEEE 11th International Conference on Solid-State and Integrated Circuit Technology (ICSCT 2012),
    Xi'an, pp. 303-306., Oct. 2012.
    document

  21. Low-pressure chemical vapor deposition of pureB layers on silicon for p+n junction formation
    K.R.C. Mok; V. Mohammadi; L.K. Nanver; W.D. de Boer; A.H.G. Vlooswijk;
    In 12th International Workshop on Junction Technology (IWJT 2012),
    Shanghai, China, pp. 113-116, May 2012. DOI 10.1109/IWJT.2012.6212822.

  22. On the uniformity of pure-boron-layer depositions
    V. Mohammadi; W.D. de Boer; T.L.M. Scholtes; A. Sakic; C. Heerkens; L.K. Nanver;
    In Proc. ICT.OPEN: Micro technology and micro devices (SAFE 2011),
    Veldhoven, The Netherlands, pp. 73-75, Nov. 2011.

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Last updated: 21 Jul 2020

Vahid Mohammadi

Alumnus
  • Left in 2015
  • Now: ASML