Surface Chemically Switchable Ultraviolet Luminescence from Interfacial Two-Dimensional Electron Gas

Mohammad A Islam; Diomedes Saldana-Greco; Zongquan Gu; Fenggong Wang; Eric Breckenfeld; Qingyu Lei; Ruijuan Xu; Christopher J Hawley; X X Xi; Lane W Martin; Andrew M Rappe; Jonathan E Spanier

doi:10.1021/acs.nanolett.5b04461

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Surface Chemically Switchable Ultraviolet Luminescence from Interfacial Two-Dimensional Electron Gas

Journal article

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Surface Chemically Switchable Ultraviolet Luminescence from Interfacial Two-Dimensional Electron Gas

Mohammad A Islam, Diomedes Saldana-Greco, Zongquan Gu, Fenggong Wang, Eric Breckenfeld, Qingyu Lei, Ruijuan Xu, Christopher J Hawley, X X Xi, Lane W Martin, …

Nano letters, v 16(1), pp 681-687

13 Jan 2016

DOI: https://doi.org/10.1021/acs.nanolett.5b04461

PMID: 26675987

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Abstract

Aluminum Oxide - chemistry

Biosensing Techniques

Electrons

Gases - chemistry

Luminescence

Oxides - chemistry

Strontium - chemistry

Surface Properties

Titanium - chemistry

Ultraviolet Rays

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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Title: Surface Chemically Switchable Ultraviolet Luminescence from Interfacial Two-Dimensional Electron Gas
Creators: Mohammad A Islam
Diomedes Saldana-Greco - University of Pennsylvania
Zongquan Gu
Fenggong Wang - University of Pennsylvania
Eric Breckenfeld - University of Illinois Urbana-Champaign
Qingyu Lei - Temple University
Ruijuan Xu - University of California, Berkeley
Christopher J Hawley
X X Xi - Temple University
Lane W Martin - University of California, Berkeley
Andrew M Rappe - University of Pennsylvania
Jonathan 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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Collaboration types: Domestic collaboration
Web of Science research areas: Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary; Nanoscience & Nanotechnology; Physics, Applied; Physics, Condensed Matter

Surface Chemically Switchable Ultraviolet Luminescence from Interfacial Two-Dimensional Electron Gas

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Abstract

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UN Sustainable Development Goals (SDGs)

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