PhD student

Job Summary: The project foresees: study of optical and transport properties of 2D and 3D CdTe/PbTe heterostructures, development of infrared CdTe/PbTe detectors, molecular beam epitaxy of CdTe/PbTe heterostructures; development of experimental setups; data analysis; writing of papers; oral and written presentation of results.

Job Description: The PhD student will take part in the study of CdTe/PbTe heterostructure s for their

application as infrared detectors. The CdTe/PbTe quantum structures, with PbTe regions

forming quantum wells or quantum dots embedded in the CdTe barriers, are known to

exhibit very strong photoluminescence resulting from the large difference in the energy

band gaps of the both materials. In addition, the both materials show very large contrast in

refractive indexes, what makes the CdTe/PbTe material system particularly attractive for

construction of photonic crystals. Photonic crystal is a wel l defined nano or

microstructure with periodic distribution of refractive index in one, two or three spatial

directions. Within CdTe/PbTe heterosystem (using molecular beam epitaxy) it is possible

to obtain all of types photonic structure in the form of C dTe/PbTe multilayers (1D photonic

crystal), PbTe (CdTe) nanopilars (2D p.c.) and PbTe (CdTe) dots (3D p.c.) embedded in

CdTe (PbTe) matrix . Thus, CdTe/PbTe structures are very promising from point of view of

potential applications as an infrared detectors and light sources.

The main objective of the proposed project is to manufacture (with molecular beam

epitaxy technique) and investigate simulation, optimization) optical ( photonic properties

of 2D and 3D CdTe/PbTe structures; building experimental systems and performing optical measurements as well as analyzing and presenting obtained data. We expect that the

realization of the project will results, among others, in a development of control and

integration methods of CdTe/PbTe structures for new kind s of optical devices (in particular

infrared detectors) exploiting simultaneously quantum and photonic properties of this

semiconductor system.

Main research field: Physics

Sub Research Field: _Optics of semiconductor structures_______ Career Stage: Master of Sciences in physics; experience in solid state physics; knowledge of optical experimental techniques; basic knowledge of molecular beam epitaxy technique; knowledge of written and spoken English .

Research Profile (details): _First Stage Researcher_(R1)__________

Type of Contract: __Temporary - 48 months__________

Status: __Full-time_________

Salary: ___5 000_________ PLN per month (untaxed scholarship).

Contact

More information can be obtained from

_dr Michał Szot_____ (e-mail: [email protected] .pl________).