Dear sir/madam,
I am writing to enquire about the availability of a research scientist
position in your laboratory. I am currently a project engineer & a post
doctoral researcher in the National Nanotechnology Institute at Bilkent
University in Ankara, Turkey, specializing in synthesis of nanomaterials,
the associated fabrication of nanoscale devices, as well as the materials
characterization and device performance analysis.
During my post-doctoral time (under the supervision of *Dr. Ali Kemal
Okyay **(Stanford electrical engineering alumni)* from *the Electrical
Engineering Department at Bilkent University*, I pioneered work on the
synthesis, stability and the use of semiconductor nanoparticles (e.g. Si,
MoS2, II-VI, and III-V alloys) in thin film device applications such as
thin film photodetectors and thin film memory cells. We demonstrated that *2-50
nm* size semiconductor nanoparticles exhibit stability towards harsh &
humid environments. These nanoparticles have been obtained in large
quantities through laser ablation, with optical properties of these
nanoparticles tailored by post-processing methods. As part of my research,
I have fabricated silicon, molybdenate nanoparticle based photodiodes that
operate well in UV/VIS range, which are of critical importance for next
generation of photodetector and photovoltaic chips.
A prof-of-concept NIR range photodiode has been fabricated based on laser
synthesized *3-36 nm* indium nitride nanoparticles in collaboration with *Dr.
Dietz **(Georgia State University Physics Department* in order to replace
expensive InGaAs based camera chips with inexpensive ones, aiming for
efficient and low-cost NIR imaging systems.
In addition to photodiode applications, 2 nm silicon, 16 nm indium nitride
nanoparticle and graphene nanoplalelet based memory chips have been
fabricated in collaboration with *Dr. Nayfeh* *(Masdar Institute,
Microsystems engineering).*We demonstrated that those semiconductor
nanoparticles behave as effective charge storage centers for next
generation miniaturized computer memory chips.
During my work at Bilkent University, I have published a comprehensive
study on a UV/VIS range photodiode based on atomic layer deposition (ALD)
grown ZnO thin films at various growth temperatures. In this comprehensive
study, the photodiode responsivity characteristics and as well as
electrical resistivity characteristics of ZnO thin films have been
detailed. This work is pioneering with regard of the use of an ALD grown
wide-bandgap semiconductor thin film in photodiode applications, which may
lead towards next generation of UV sensor chips and environmental
detectors. Further research results showed that semiconductor
nanoparticles and graphene nanoplatelets are effective components to shape
next generation electronics and photodetector applications. Collaborative
work has been done with *Dr. Brongersma* (*Stanford Materials Science*)
regarding the fabrication of Si/Ge multi- qauntum well (MQW) photodetector,
as a competition to current Silicon photodetectors for space applications (*J.
Crystal growth 2015*). I used effective focused ion beam (FIB) analysis on
the Si/Ge MQW structure to determine defect composition for effective
high-tech applications to rival current InGaAs and HgCdTe photodetectors
for next generation telescope and IR bolometer applications that would
provide lower cost and more effective imaging of nearby galaxies.
The results of my post-doctoral research have beeb published in various
prestigious journals such as *Journal of Physical Chemistry C, Optics
Express, Materials Chemistry & Physics, Journal of Optics, Nature Photonics
(highlights), Physica status solidi C, Physica status solidi A, Applied
Physics Letters, and IEEE electron device letters.*
I completed my PhD dissertational work under the guidance of *Dr. Jeff
Krause* (*University of Florida, now program officer at Department of
Energy, Optical Sciences Division*) on computer simulations of silver
nanoparticles and self assembled organic monolayers that may are of
critical importance for biosensing applications. The study of azobenzene
molecule as a molecular switch has been performed in computational
environment using computational codes such as VASP and DLPOLY. Results of
my dissertational work have been published in *Journal of physical
chemistry C, and Physical Review B*. My graduate research work focused on
providing new insight on understanding nanoparticle diffusions on complex
surfaces and temperature dependent behaviour of self-assembled organic
monolayers and molecular switches that are of critical importance for next
generation molecular electronics & molecular computer applications.
During my graduate years, I had the the opportunity to teach undergraduate
chemistry labs and as well as a graduate level course on computer modelling
and simulations in nanotechnology that prepared me well for a fascinating
teaching position.
I strongly believe that my strong background in materials science, physical
chemistry, nanotechnology and my diverse research experience that lead
through cutting edge discoveries would makes me a great addition to your
prestigious department and to your research environment.
I’m looking forward to hearing from you about the opportunities to
contribute to your research program.
Sincerely yours,
Dr. Sabri Alkis.