Direct electro-optical pumping for hybrid CdSe nanocrystal/III-nitride based nano-light-emitting diodes
English
Mikulics, Martin[Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, D-52425 Jülich, Germany and Jülich-Aachen Research Alliance, JARA, Fundamentals of Future Information Technology, Germany]
Arango, Y.C.[Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, D-52425 Jülich, Germany and Jülich-Aachen Research Alliance, JARA, Fundamentals of Future Information Technology, Germany]
Winden, Andreas[Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, D-52425 Jülich, Germany and Jülich-Aachen Research Alliance, JARA, Fundamentals of Future Information Technology, Germany]
Adam, Roman[Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, D-52425 Jülich, Germany and Jülich-Aachen Research Alliance, JARA, Fundamentals of Future Information Technology, Germany]
Hardtdegen, A.[Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, D-52425 Jülich, Germany and Jülich-Aachen Research Alliance, JARA, Fundamentals of Future Information Technology, Germany]
Grützmacher, Detlev[Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, D-52425 Jülich, Germany and Jülich-Aachen Research Alliance, JARA, Fundamentals of Future Information Technology, Germany]
Plinski, E.[Faculty of Electronics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, pOLAND]
Gregusova, Dagmar[Institute of Electrical Engineering, Slovak Academy of Sciences, SK-84104 Bratislava, Slovak Republic]
Novak, Jozef[Institute of Electrical Engineering, Slovak Academy of Sciences, SK-84104 Bratislava, Slovak Republic]
Kordos, Peter[Institute of Electronics and Photonics, Slovak University of Technology, SK-81219 Bratislava, Slovakia]
Moonshiram, Anusha[University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Marso, Michel[University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Sofer, Zdenek[Department of Inorganic Chemistry, Institute of Chemical Technology, Technická 5, 166 28 Prague 6, Czech Republic]
Lüth, Hans[Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, D-52425 Jülich, Germany and Jülich-Aachen Research Alliance, JARA, Fundamentals of Future Information Technology, Germany]
Hardtdegen, hILDE[Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich, D-52425 Jülich, Germany and Jülich-Aachen Research Alliance, JARA, Fundamentals of Future Information Technology, Germany]
[en] We propose a device concept for a hybrid nanocrystal/III-nitride based nano-LED. Our approach is based on the direct electro-optical pumping of nanocrystals (secondary excitation) by electrically driven InGaN/GaN nano-LEDs as the primary excitation source. To this end, a universal hybrid optoelectronic platform was developed for a large range of optically active nano- and mesoscopic structures. The advantage of the approach is that the emission of the nanocrystals can be electrically induced without the need of contacting them. The proof of principal was demonstrated for the electro-optical pumping of CdSe nanocrystals. The nano-LEDs with a diameter of 100 nm exhibit a very low current of 8 nA at 5V bias which is several orders of magnitude smaller than for those conventionally used. The leakage currents in the device layout were typically in the range of 8 pA to 20 pA/cm2 at 5V bias. The photon-photon down conversion efficiency was determined to be 27%. Microphotoluminescence and microelectroluminescence characterization demonstrate the potential for future optoelectronics and highly secure “green” information technology applications.
[University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
