Details

Autor(en) / Beteiligte

• Ma, Yanjun
• Folkman, Chad M
• Bogorin, Daniela F
• Irvin, Patrick
• Levy, Jeremy
• Cen, Cheng
• Bark, Chung Wung
• Eom, Chang-Beom

Titel

Rewritable nanoscale oxide photodetector

Ist Teil von

• Nature photonics, 2010-12, Vol.4 (12), p.849-852

Ort / Verlag

London: Nature Publishing Group UK

Erscheinungsjahr

2010

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Nanophotonic devices are designed to generate, guide or detect light using structures with nanoscale dimensions that are closely tied to their functionality 1 , 2 , 3 , 4 . However, the integration of photonic nanostructures with electronic circuitry 5 remains one of the most challenging aspects of device development. Here we report the development of rewritable nanoscale photodetectors created at the interface between LaAlO 3 and SrTiO 3 . Nanowire junctions with characteristic dimensions of 2–3 nm are created using a reversible conductive atomic force microscope writing technique 6 , 7 . These nanoscale devices exhibit remarkably high gain for their size, in part because of the large electric fields produced in the gap region. The photoconductive response is electric field-tunable and spans the visible-to-near-infrared regime. The ability to integrate rewritable nanoscale photodetectors with nanowires and transistors in a single material platform foreshadows new families of integrated optoelectronic devices and applications. Researchers report rewritable nanoscale photodetectors that exploit 2–3 nm nanowire junctions. Large electromagnetic fields in the gap region aid the detector response, which is electric-field-tunable and spans the visible to near-infrared regime.