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3. Intersubband Quantum Disc-in-Nanowire Photodetectors with Normal-Incidence Response in the Long-Wavelength Infrared

Author

Karimi, Mohammad, primary, Heurlin, Magnus, additional, Limpert, Steven, additional, Jain, Vishal, additional, Zeng, Xulu, additional, Geijselaers, Irene, additional, Nowzari, Ali, additional, Fu, Ying, additional, Samuelson, Lars, additional, Linke, Heiner, additional, Borgström, Magnus T., additional, and Pettersson, Håkan, additional

Published
2017
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4. Room-temperature InP/InAsP Quantum Discs-in-Nanowire Infrared Photodetectors

Author

Karimi, Mohammad, primary, Jain, Vishal, additional, Heurlin, Magnus, additional, Nowzari, Ali, additional, Hussain, Laiq, additional, Lindgren, David, additional, Stehr, Jan Eric, additional, Buyanova, Irina A., additional, Gustafsson, Anders, additional, Samuelson, Lars, additional, Borgström, Magnus T., additional, and Pettersson, Håkan, additional

Published
2017
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7. Intersubband Quantum Disc-in-Nanowire Photodetectors with Normal-Incidence Response in the Long-Wavelength Infrared.

Author

Karimi, Mohammad, Heurlin, Magnus, Limpert, Steven, Jain, Vishal, Xulu Zeng, Geijselaers, Irene, Nowzari, Ali, Ying Fu, Samuelson, Lars, Linke, Heiner, Borgström, Magnus T., and Pettersson, Håkan

Subjects
*ENERGY bands, *NANOWIRES, *PHOTODETECTORS, *WAVELENGTHS, *ULTRAVIOLET detectors, *HETEROSTRUCTURES
Abstract

Semiconductor nanowires have great potential for realizing broadband photodetectors monolithically integrated with silicon. However, the spectral range of such detectors has so far been limited to selected regions in the ultraviolet, visible, and near-infrared regions. Here, we report on the first intersubband nanowire heterostructure array photodetectors exhibiting a spectrally resolved photoresponse from the visible to long-wavelength infrared. In particular, the infrared response from 3 to 20 µm is enabled by intersubband transitions in low-bandgap InAsP quantum discs synthesized axially within InP nanowires. The intriguing optical characteristics, including unexpected sensitivity to normal incident radiation, are explained by excitation of the longitudinal component of optical modes in the photonic crystal formed by the nanostructured portion of the detectors. Our results provide a generalizable insight into how broadband nanowire photodetectors may be designed and how engineered nanowire heterostructures open up new, fascinating opportunities for optoelectronics. [ABSTRACT FROM AUTHOR]

Published
2018
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