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Paul-Drude-Institut für Festkörperelektronik Leibniz-Institut im Forschungsverbund Berlin e. V.

The Paul Drude Insti­tute (PDI) per­forms basic research as a lively sym­bi­osis of mater­i­als sci­ence and solid state phys­ics. Our research aims at inspir­ing and demon­strat­ing new func­tion­al­it­ies for future inform­a­tion tech­no­lo­gies. As a mem­ber of the Leib­niz-Gemeinsch­aft and Forschungs­ver­bund Ber­lin e. V., we are an inde­pend­ent research insti­tute with about 100 employ­ees and col­lab­or­ate with all three uni­versit­ies in Ber­lin. We are loc­ated in the very heart of the city near Gen­dar­men­markt. You may find more details at www.pdi-berlin.de

Ph.D. Pos­i­tion

for Cath­odo­lu­min­es­cence Spec­tro­scopy of Core/Shell Nanowires

Work­ing field:

Group-III-V nanowires, one of the core research areas of the PDI, have a large poten­tial for applic­a­tions in opto­elec­tronic devices. We are cur­rently devel­op­ing nano-lasers based on GaAs/(In,Ga)As core/shell nanowire struc­tures for the dir­ect integ­ra­tion on Si wave­guides, which would facil­it­ate intra- and inter-chip optical inter­con­nects. In this con­text, it is import­ant to achieve a detailed under­stand­ing of the emis­sion spec­tra of the nanowires and on how they are influ­enced by the choice of com­pos­i­tion, dimen­sions, dop­ing, and crys­tal struc­ture. Using cath­odo­lu­min­es­cence spec­tro­scopy (CL) in a scan­ning elec­tron micro­scope (SEM), we can resolve the emis­sion prop­er­ties on a nano­scale. In the same SEM, the crys­tal struc­ture can be invest­ig­ated by elec­tron backs­cat­ter dif­frac­tion (EBSD), and the prop­er­ties of a fully pro­cessed nano-laser can be ana­lysed by meas­ure­ments of the elec­tron beam induced cur­rent (EBIC). The res­ults obtained using all these highly spa­tially resolved tech­niques can be dir­ectly cor­rel­ated for the same set of nanowires. We are cur­rently look­ing for a Ph. D. stu­dent to carry out CL, EBSD, and EBIC meas­ure­ments on GaAs/(In,Ga)As core/shell nanowires in close col­lab­or­a­tion with the PostDoc grow­ing these struc­tures.

Require­ments:

We invite applic­a­tions from phys­i­cists with a com­pet­it­ive mas­ter degree and a back­ground in exper­i­mental solid state phys­ics. Exper­i­ence with elec­tron micro­scopy, lumin­es­cence spec­tro­scopy and/or work­ing with semi­con­ductor nanowires is advant­age­ous.

What we of­fer:

The pos­i­tion is avail­able for up to 3 years start­ing Septem­ber 1st, 2019. Pay­ment is accord­ing to TVöD (Treaty for Ger­man pub­lic ser­vice). PDI is an equal oppor­tun­ity employer. Applic­a­tions from women are there­fore encour­aged. Among equally qual­i­fied applic­ants, pref­er­ence will be given to dis­abled can­did­ates.

How to ap­ply:

Applic­a­tions, includ­ing cur­riculum vitae, a list of grades, and a
spe­cific motiv­a­tion let­ter, should be sent by August 30th, 2019 to:
Mr. Andreas Har­tung, Paul-Drude-Insti­tut für Festkörpere­lektronik, Leib­niz-Insti­tut im Forschungs­ver­bund Ber­lin e. V.,
Haus­vo­gteiplatz 5-7, 10117 Ber­lin, Email: jobs@pdi-berlin.de
Please con­tact Dr. Jonas Läh­ne­mann for any sci­entific or tech­nical ques­tions
related to this pos­i­tion, Email: laehnemann@pdi-berlin.de