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Journal article
Surface Chemically Switchable Ultraviolet Luminescence from Interfacial Two-Dimensional Electron Gas
Nano letters, v 16(1), pp 681-687
13 Jan 2016
PMID: 26675987
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We report intense, narrow line-width, surface chemisorption-activated and reversible ultraviolet (UV) photoluminescence from radiative recombination of the two-dimensional electron gas (2DEG) with photoexcited holes at LaAlO3/SrTiO3. The switchable luminescence arises from an electron transfer-driven modification of the electronic structure via H-chemisorption onto the AlO2-terminated surface of LaAlO3, at least 2 nm away from the interface. The control of the onset of emission and its intensity are functionalities that go beyond the luminescence of compound semiconductor quantum wells. Connections between reversible chemisorption, fast electron transfer, and quantum-well luminescence suggest a new model for surface chemically reconfigurable solid-state UV optoelectronics and molecular sensing.
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Details
- Title
- Surface Chemically Switchable Ultraviolet Luminescence from Interfacial Two-Dimensional Electron Gas
- Creators
- Mohammad A IslamDiomedes Saldana-Greco - University of PennsylvaniaZongquan GuFenggong Wang - University of PennsylvaniaEric Breckenfeld - University of Illinois Urbana-ChampaignQingyu Lei - Temple UniversityRuijuan Xu - University of California, BerkeleyChristopher J HawleyX X Xi - Temple UniversityLane W Martin - University of California, BerkeleyAndrew M Rappe - University of PennsylvaniaJonathan E Spanier
- Publication Details
- Nano letters, v 16(1), pp 681-687
- Publisher
- American Chemical Society; Washington, DC
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000368322700104
- Scopus ID
- 2-s2.0-84957545008
- Other Identifier
- 991019169898904721
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Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter