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Nano-Optoelectronics

We endeavor to develop single photon emitters based on group III nitride nano-LEDs (light emitting diodes). Due to their room temperature operation, they may enable highly secure and fast quantum cryptography based on single photon emitters. The key challenge in this technology is to develop single photon emitter, which emit on demand a single photon with very high repetition rates, which has not been achieved for electrically pumped single photon sources. To this end we investigate a hybrid approach to explore plasmonic effects leading to a field enhancement at the position of a light emitting nanoparticle serving as the single photon source. The colloidal II/VI nanoparticles are electro-optically pumped as the secondary excitation sources by electrically driven nano-LEDs as the primary excitation sources. The hybrid system is well suited to tune the emission wavelength in dependence of the size of the colloidal nanoparticle. The nanoparticle is embedded in an Au nanostructure, designed to tailor efficient absorption and stimulate photon emission.

hybrid_LEDNanocrystal/nano-LED hybrid platform reprinted with permission from M. Mikulics et al., ‘Direct electro-optical pumping for hybrid CdSe nanocrystal/III-nitride based nano-light-emitting diodes’, Appl. Phys. Lett., vol. 108, p. 061107, 2016. Copyright 2016, AIP Publishing LLC.

nanopyramid LED arrayNanopyramid LED array

M. Mikulics, A. Winden, M. Marso, A. Moonshiram, H. Lüth, D. Grützmacher, and H. Hardtdegen
Nano-light-emitting-diodes based on InGaN mesoscopic structures for energy saving optoelectronics
Appl. Phys Lett vol.109, no. 4, p 041103, July 2016
DOI: 10.1063/1.4960007

M. Mikulics, Y. C. Arango, A. Winden, R. Adam, A. Hardtdegen, D. Grützmacher, E. Plinski, D. Gregušová, J. Novák, P. Kordoš, A. Moonshiram, M. Marso, Z. Sofer, H. Lüth, and H. Hardtdegen
Direct electro-optical pumping for hybrid CdSe nanocrystal/III-nitride based nano-light-emitting diodes
Appl. Phys. Lett., vol. 108, no. 6, p. 061107, Feb. 2016
DOI: 10.1063/1.4941923.

M. Mikulics and H. Hardtdegen
Nano-LED array fabrication suitable for future single photon lithography
Nanotechnology, vol. 26, no. 18, p. 185302, 2015
DOI: 10.1088/0957-4484/26/18/185302.

A. Winden, M. Mikulics, D. Grützmacher, and H. Hardtdegen
Vertically integrated (Ga, In)N nanostructures for future single photon emitters operating in the telecommunication wavelength range
Nanotechnology, vol. 24, no. 40, p. 405302, Oct. 2013
DOI: 10.1088/0957-4484/24/40/405302.

A. Winden, M. Mikulics, A. Haab, D. Grützmacher, and H. Hardtdegen
Spectral sensitivity tuning of vertical InN nanopyramid-based photodetectors
Jpn. J. Appl. Phys., vol. 52, no. 8 PART 2, p. 08JF05, 2013
DOI: 10.7567/JJAP.52.08JF05.

S. Riess, M. Mikulics, A. Winden, R. Adam, M. Marso, D. Grützmacher, and H. Hardtdegen
Highly transparent conducting polymer top contacts for future III-nitride based single photon emitters
Jpn. J. Appl. Phys., vol. 52, no. 8 PART 2, pp. 8–12, 2013
DOI: 0.7567/JJAP.52.08JH10.

patents:
M. Mikulics and H. Hardtdegen
Single Photon Source Suitable for Mass Production and Production Method
patent specification WO2014094705 A1, 2013.

M. Mikulics and H. Hardtdegen
Method for Optical Transmission of a Structure into a Recording Medium
patent specification DE20121016178 20120816, 2012.





Additional Information

Contact:

tba

device design and fabrication,
electrical and optical characterization
Dr. Martin Mikulics

technical issues MOVPE
Konrad Wirtz


 


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